Casting ceramic core of retarder shell

Abstract

The utility model discloses a retarder shell casting ceramic core which comprises a casting ceramic core body, a plurality of positioning holes are formed in the casting ceramic core body, the positioning holes penetrate through the upper surface and the lower surface of the casting ceramic core body, positioning blocks are inserted into the inner sides of the positioning holes in a sliding mode, casting inserts are fixed to the upper surfaces of the positioning blocks, and the casting inserts are fixed to the lower surfaces of the positioning blocks. A positioning rod is fixed to the lower surface of the positioning block, two symmetrically-distributed second clamping grooves are formed in the outer side of the bottom end of the positioning rod, and two anti-disengaging plates are arranged at the bottom of the positioning hole. The first anti-falling clamping plate and the second anti-falling clamping plate at the top of the anti-falling plate are mutually extruded, so that the top end of the first anti-falling clamping plate and the top end of the second anti-falling clamping plate are separated from the first clamping groove and the second clamping groove respectively, and the positioning rod and the casting ceramic core can be disconnected; at the moment, the casting insert can be easily taken out and replaced, and the maintenance and replacement difficulty of the insert on the casting ceramic core of the retarder shell is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry ceramic core technical field, concretely is a kind of retarber shell foundry ceramic core. BACKGROUND

[0002] Retarber is a kind of auxiliary brake device, mainly used to help large vehicle when long downhill steady deceleration, reduce brake wear and heat, it passes through control circuit and gives subassembly excitation coil electrification, generates magnetic field, rotor assembly rotates with high speed along with vehicle transmission part, cuts magnetic force line, generates reverse torque, to make vehicle deceleration;

[0003] Retarber is composed of multiple parts, including rotor, stator, working cavity, input shaft, heat exchanger, oil tank and shell, the shell of retarber is processed by casting mode, before processing, according to the modeling of retarber shell, the ceramic core for retarber casting is processed, ceramic core uses an intermediate support structure in the casting process, mainly used to support and form the complex geometry inside the casting, it is usually made of high-temperature ceramic materials, such as alumina, silica, zirconia, etc., these materials have high melting point, low thermal expansion coefficient and excellent corrosion resistance.

[0004] However, retarber casting ceramic core has small-diameter inserts, these inserts are interference fit with retarber casting ceramic core, when installing or replacing, copper bar needs to be used to knock, and careless operation in the operation process can cause the inserts to be damaged, which is not conducive to the installation or insert replacement of retarber casting ceramic core, therefore, it does not meet the existing needs, for this, we propose a retarber shell foundry ceramic core. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of retarber shell foundry ceramic core to solve the problems, such as the retarber casting ceramic core on the above background technology has small-diameter inserts, these inserts are interference fit with retarber casting ceramic core, when installing or replacing, copper bar needs to be used to knock, and careless operation in the operation process can cause the inserts to be damaged, which is not conducive to the installation or insert replacement of retarber casting ceramic core.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of retarber shell foundry ceramic core, including casting ceramic core, the inside of the casting ceramic core is equipped with multiple positioning holes, the positioning hole penetrates the upper surface and lower surface of the casting ceramic core, the inner side of the positioning hole is slidably inserted with positioning block, the upper surface of the positioning block is fixed with casting insert, the lower surface of the positioning block is fixed with positioning rod, the bottom outer side of the positioning rod is equipped with two second clamping grooves that are symmetrically distributed, the bottom of the positioning hole is equipped with two anti-drop plates, one end of the anti-drop plate is fixed with first anti-drop clamping plate and second anti-drop clamping plate, the first anti-drop clamping plate and second anti-drop clamping plate are located between positioning rod and the inner wall of positioning hole.

[0007] Preferably, the bottom end of the positioning hole is provided with two symmetrically distributed first clamping grooves, and the two first clamping grooves are respectively aligned with and have the same size as the two second clamping grooves.

[0008] Preferably, the top end of each of the first and second anti-falling clamping plates is downwardly V-shaped, and the top end of each of the first and second anti-falling clamping plates is clamped in the inner side of the first or second clamping groove.

[0009] Preferably, the anti-falling plate is L-shaped and has a bottom end parallel to and attached to the bottom surface of the ceramic core for casting, and the bottom end of the anti-falling plate is connected to the ceramic core for casting by a screw.

[0010] Preferably, the first and second anti-falling clamping plates at the top end of the same anti-falling plate have the same size and are symmetrically arranged.

[0011] Preferably, the surface precision and roughness of the outer surface of the casting insert and the upper surface of the positioning block are consistent with the surface precision and roughness of the ceramic core for casting.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The first and second anti-falling clamping plates at the top of the anti-falling plate are pressed against each other, so that the top end of each of the first and second anti-falling clamping plates is separated from the first or second clamping groove, the connection between the positioning rod and the ceramic core for casting is disconnected, the casting insert can be easily taken out and replaced, the difficulty of maintaining and replacing the insert on the ceramic core for casting the retarder shell is reduced, and the maintenance efficiency of the ceramic core for casting the retarder shell is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model as a whole;

[0015] Figure 2 It is a structural sectional view of the ceramic core for casting of the utility model;

[0016] Figure 3 It is Figure 2 It is an enlarged view of the structure at A in the middle;

[0017] Figure 4 It is a structural schematic view of the positioning rod of the utility model.

[0018] In the drawing: 1, ceramic core for casting; 2, positioning block; 3, casting insert; 4, positioning rod; 5, positioning hole; 6, anti-falling plate; 7, first anti-falling clamping plate; 8, second anti-falling clamping plate; 9, first clamping groove; 10, second clamping groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figures 1 to 4 As shown, a retarder housing is provided with a cast ceramic core. The cast ceramic core 1 has multiple positioning holes 5 inside, which penetrate the upper and lower surfaces of the cast ceramic core 1. A positioning block 2 is slidably inserted into the inner side of the positioning hole 5. A cast insert 3 is fixed to the upper surface of the positioning block 2, and a positioning rod 4 is fixed to the lower surface of the positioning block 2. Two symmetrically distributed second slots 10 are provided on the outer side of the bottom end of the positioning rod 4. Two anti-detachment plates 6 are provided at the bottom of the positioning hole 5. A first anti-detachment locking plate 7 and a second anti-detachment locking plate 8 are fixed to one end of the anti-detachment plate 6. The first anti-detachment locking plate 7 and the second anti-detachment locking plate 8 are located between the positioning rod 4 and the inner wall of the positioning hole 5. The positioning rod 4 is restricted in position by the anti-detachment plate 6, the first anti-detachment locking plate 7, and the second anti-detachment locking plate 8, so as to ensure that the positioning block 2, the cast insert 3, and the positioning rod 4 will not separate from the cast ceramic core 1.

[0021] The bottom inner side of the positioning hole 5 is provided with two symmetrically distributed first slots 9. The two first slots 9 are aligned with the two second slots 10 and are the same size. The tops of the first anti-detachment locking plate 7 and the second anti-detachment locking plate 8 are both bent downward in a V-shape. The bent tops of the first anti-detachment locking plate 7 and the second anti-detachment locking plate 8 are respectively locked into the inner side of the first slot 9 and the second slot 10. The position of the positioning rod 4 is restricted by the second anti-detachment locking plate 8, while the first anti-detachment locking plate 7 ensures that the second anti-detachment locking plate 8 and the anti-detachment plate 6 will not fall between the positioning rod 4 and the casting ceramic core 1.

[0022] The anti-detachment plate 6 is L-shaped and its bottom end is parallel to and fits against the bottom surface of the casting ceramic core 1. The bottom end of the anti-detachment plate 6 is connected to the casting ceramic core 1 by screws. The first anti-detachment snap plate 7 and the second anti-detachment snap plate 8 at the top of the same anti-detachment plate 6 are the same size, and the positions of the first anti-detachment snap plate 7 and the second anti-detachment snap plate 8 are symmetrical to each other. The anti-detachment plate 6 is installed at the bottom of the casting ceramic core 1 to ensure the structural stability of the first anti-detachment snap plate 7 and the second anti-detachment snap plate 8, and there is no need to disassemble the anti-detachment plate 6.

[0023] The surface accuracy and surface roughness of the outer surface of the casting insert 3 and the upper surface of the positioning block 2 are consistent with the surface accuracy and surface roughness of the casting ceramic core 1, ensuring that there are no defects in the surface accuracy and surface roughness of the retarder shell after casting.

[0024] Working principle: first, the anti-off plate 6 is installed at the bottom of the positioning hole 5 through screws, and the top end of the first anti-off clamping plate 7 is clamped inside the first clamping groove 9, when the casting insert 3 needs to be installed, only need to insert the positioning rod 4 into the inside of the positioning hole 5 from the upper surface of the ceramic core 1 for casting, until the upper surface of the positioning block 2 is flush with the upper surface of the ceramic core 1 for casting, during the process, the bottom end of the positioning rod 4 first contacts the top end of the two second anti-off clamping plates 8, and extrudes the top end of the second anti-off clamping plate 8, so that the second anti-off clamping plate 8 bends and approaches the first anti-off clamping plate 7, at this time, the top end of the second anti-off clamping plate 8 always adheres to the inner wall of the positioning rod 4, after the positioning block 2 is installed in place, the positioning block 2 is rotated until the top end of the second anti-off clamping plate 8 is aligned with the second clamping groove 10, at this time, the second anti-off clamping plate 8 restores elastically and the top end is clamped in the second clamping groove 10, at this time, the positioning rod 4 is limited by the second anti-off clamping plate 8 and cannot be rotated, the installation of the casting insert 3 is completed, when the casting insert 3 needs to be disassembled, only need to stand the ceramic core 1 for casting and extrude the second anti-off clamping plate 8 to the first anti-off clamping plate 7, so that the top end of the second anti-off clamping plate 8 is separated from the second clamping groove 10, at this time, the worker only needs to pull out the positioning block 2 and the positioning rod 4 from the positioning hole 5, during the whole process, the casting insert 3 does not need to be knocked, the installation and replacement difficulty of the casting insert 3 is reduced, and the maintenance and repair efficiency of the retarder ceramic core for casting is improved.

[0025] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but rather can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Accordingly, the embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A retarder housing foundry core, comprising a foundry core (1) for casting, characterized in that: The inside of the ceramic core for casting (1) is provided with a plurality of positioning holes (5), the positioning holes (5) penetrate the upper surface and the lower surface of the ceramic core for casting (1), the inner side of the positioning holes (5) is slidingly connected with positioning blocks (2), the upper surface of the positioning blocks (2) is fixedly connected with casting inserts (3), the lower surface of the positioning blocks (2) is fixedly connected with positioning rods (4), the bottom end of the outer side of the positioning rods (4) is provided with two symmetrically distributed second clamping grooves (10), the bottom of the positioning holes (5) is provided with two anti-disengagement plates (6), one end of the anti-disengagement plates (6) is fixedly connected with first anti-disengagement clamping plates (7) and second anti-disengagement clamping plates (8), the first anti-disengagement clamping plates (7) and the second anti-disengagement clamping plates (8) are located between the positioning rods (4) and the inner wall of the positioning holes (5).

2. A ceramic core for casting a retarder housing according to claim 1, characterized in that: The bottom end of the positioning holes (5) is provided with two symmetrically distributed first clamping grooves (9), and the two first clamping grooves (9) are respectively aligned with the two second clamping grooves (10) and have the same size.

3. A ceramic core for casting a retainer housing according to claim 2, wherein: The top end of the first anti-disengagement clamping plate (7) and the second anti-disengagement clamping plate (8) is downwardly V-shapedly bent, and the bent top end of the first anti-disengagement clamping plate (7) and the second anti-disengagement clamping plate (8) is clamped in the inner side of the first clamping groove (9) and the second clamping groove (10) respectively.

4. A ceramic core for casting a retainer housing according to claim 1, wherein: The anti-disengagement plate (6) is L-shapedly bent, the bottom end of the anti-disengagement plate (6) is parallel to and adheres to the bottom surface of the ceramic core for casting (1), and the bottom end of the anti-disengagement plate (6) is connected with the ceramic core for casting (1) through screws.

5. A ceramic core for casting a retainer housing according to claim 4, wherein: The first anti-disengagement clamping plate (7) and the second anti-disengagement clamping plate (8) at the top end of the same anti-disengagement plate (6) have the same size, and the first anti-disengagement clamping plate (7) and the second anti-disengagement clamping plate (8) are symmetrically arranged.

6. A ceramic core for casting a retarder housing according to claim 1, characterized in that: The surface precision and the surface roughness of the outer surface of the casting insert (3) and the upper surface of the positioning block (2) are consistent with the surface precision and the surface roughness of the ceramic core for casting (1).

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