A fastening device for machining of a semi-circular casting which is easy to disassemble

Abstract

The utility model discloses a half circle casting processing fastening device convenient to split, including first half circle casting, second half circle casting and crossbeam, first half circle casting, second half circle casting is symmetrical and is distributed, and is provided with the vertical board respectively in the both ends of first half circle casting, second half circle casting, is provided with crossbeam above the vertical board, is provided with the clamping plate respectively below the both ends of crossbeam, and the clamping plate is located the both sides of vertical board, is provided with fastening bolt at the side of clamping plate, is provided with the lifting lug at the top of crossbeam. The device adopts the mode of bolt connection and clamping plate fixation, avoids the crack risk brought by welding and cutting, reduces the damage of casting surface, improves the surface quality of casting, also greatly shortens the preparation time before processing and the split time after processing, improves the production efficiency.

Description

Technical Field

[0001] This utility model relates to a clamp, and more particularly to a fastening device for machining semi-circular castings that is easy to disassemble, belonging to the field of casting machining technology. Background Technology

[0002] In the field of machining, semi-circular castings are widely used in the manufacture of various wheel-shaped, cylindrical, or other circular structural components. These semi-circular castings typically require roughing and finishing to achieve the dimensional and shape accuracy required by the design. To improve machining efficiency and accuracy, before machining, the two semi-circular castings need to be joined together, and the two semi-circles are fixed together by spot welding with steel plates at the joint. The disadvantages of this construction method are: ① After machining, the two halves of the casting need to be separated for subsequent machining or assembly. During the separation process, gas cutting is required to remove the weld points of the steel plates, which is not only cumbersome but also easily damages the surface of the casting, leading to a decrease in machining accuracy; ② The stress generated during welding will remain inside the casting, which may lead to cracks and affect the service life and reliability of the casting. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a fastening device for processing semi-circular castings that is easy to disassemble, which can quickly fix two semi-circular castings, is easy to disassemble and assemble, ensures the quality of processing, and improves the service life of castings.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows: A fastening device for machining a semi-circular casting that is easy to disassemble includes a first semi-circular casting, a second semi-circular casting, and a crossbeam. The first and second semi-circular castings are symmetrically distributed, and vertical plates are respectively provided at both ends of the first and second semi-circular castings. A crossbeam is provided above the vertical plates, and clamping plates are respectively provided below both ends of the crossbeam, with the clamping plates located on both sides of the vertical plates. Fastening bolts are provided on the sides of the clamping plates, and lifting lugs are provided on the top of the crossbeam.

[0005] The first semicircular casting and the second semicircular casting are two identical castings, and the vertical plates at the ends of the two semicircular castings are tightly attached to each other to form a circular cross section.

[0006] There are two crossbeams, which span across the vertical plate at the end of the semi-circular casting, with the front and rear ends of the crossbeams extending out to both sides of the vertical plate.

[0007] The clamping plate is located in the middle of the side of the crossbeam. Through holes are drilled on both sides of the top of the inner end of the crossbeam, and limit hooks are inserted through the through holes. The limit hooks are located on both sides of the vertical plate.

[0008] The limiting hooks are distributed in an L-shape, with the bottom of the limiting hook hooked to the bottom of the semi-circular casting, and a matching limiting nut provided at the top of the limiting hook.

[0009] The positive and beneficial effects of this utility model are: 1. This utility model facilitates the hoisting and transportation of castings by setting a crossbeam above the vertical plate and a lifting lug at the top of the crossbeam; by setting fastening bolts on the clamping plates on both sides of the crossbeam, the two semi-circular castings can be quickly fixed, making disassembly and assembly convenient, preventing displacement during processing and ensuring processing accuracy.

[0010] 2. This utility model provides a limit hook in the through holes on both sides of the inner end of the crossbeam, which can lift the bottom of the casting and ensure the safety of the casting during hoisting. At the same time, the semi-circular casting can maintain high stability during processing and will not be displaced due to vibration or external force. This stable fixing method ensures processing accuracy, meets the requirements of high-precision processing, and reduces processing errors and scrap rate.

[0011] 3. This device uses bolt connections and clamping plates for fixing, which avoids the risk of cracks caused by welding and cutting, reduces damage to the surface of castings, improves the surface quality of castings, and at the same time greatly shortens the preparation time before processing and the disassembly time after processing, thus improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the prior art of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of the crossbeam and clamping plate of this utility model; Figure 4 for Figure 3 Top view; Wherein: 1-First semicircular casting, 2-Second semicircular casting, 3-Vertical plate, 4-Horizontal beam, 5-Clamping plate, 6-Fasting bolt, 7-Lifting lug, 8-Limiting hook, 9-Limiting nut, 10-Spot welding position. Detailed Implementation

[0013] The present invention will be further explained and described below with reference to the accompanying drawings: See the example. Figures 1-4A fastening device for processing a semi-circular casting that is easy to disassemble includes a first semi-circular casting 1, a second semi-circular casting 2, and a crossbeam 4. The first semi-circular casting 1 and the second semi-circular casting 2 are symmetrically distributed, and vertical plates 3 are respectively provided at both ends of the first semi-circular casting 1 and the second semi-circular casting 2. A crossbeam 4 is provided above the vertical plates 3. Clamping plates 5 are respectively provided below both ends of the crossbeam 4, and the clamping plates 5 are located on both sides of the vertical plates 3. Fastening bolts 6 are provided on the sides of the clamping plates 5, and lifting lugs 7 are provided on the top of the crossbeam 5.

[0014] The first semicircular casting 1 and the second semicircular casting 2 are two identical castings, and the vertical plates 3 at the ends of the two semicircular castings are tightly attached to each other to form a circular cross section.

[0015] There are two crossbeams 4, which are respectively set above the vertical plate 3 at the end of the semi-circular casting, and extend out of the front and rear ends of the crossbeams 4 to the sides of the vertical plate 3.

[0016] The clamping plate 5 is located in the middle of the side of the crossbeam 4. Through holes are drilled on both sides of the top of the inner end of the crossbeam 4, and limit hooks 8 are inserted through the through holes. The limit hooks 8 are located on both sides of the vertical plate 3.

[0017] The limiting hooks 8 are distributed in an L-shape. The bottom of the limiting hooks 8 hooks onto the bottom of the semi-circular casting, and a matching limiting nut 9 is provided at the top of the limiting hooks 8.

[0018] In the above description, the width of the crossbeam is greater than the width of the clamping plate, and the clamping plate is located in the middle position below both ends of the crossbeam and is distributed perpendicular to the crossbeam.

[0019] In the above description, the distance between the two clamping plates at both ends of the crossbeam is greater than the width between the two vertical plates, and the fastening bolts pass through the clamping plates and are connected to the clamping plates by threads.

[0020] In the above description, each horizontal plate has two limit hooks at both ends. The limit hooks are located on the horizontal beam outside the vertical plate, and the bottom of the limit hook is locked into the bottom of the circular casting. A matching limit nut is threadedly connected to the top of the limit hook.

[0021] In the above description, a limit nut is provided on the outer wall of the limit hook.

[0022] In the above description, Figure 1 In the diagram, mark 10 indicates the location of spot welding in the prior art.

[0023] Working principle: ① Before assembly, ensure that the mating surfaces of the two semi-circular castings are clean and free of impurities and burrs; ② Install the vertical plates: Attach the end vertical plates of the two semi-circular castings tightly together so that the two semi-circular castings form a circular cross-section; ③ Install the crossbeam and clamps: Place the crossbeam above the vertical plate, with the clamps on both sides of the vertical plate, and tighten them with bolts. ④ Install the limit hook: Pass the limit hook through the through hole of the crossbeam, so that its bottom hooks onto the bottom of the semi-circular casting, and then further fix it with the limit nut; ⑤ Secure the casting to the processing platform using lifting tools and lugs, and then process it. ⑥ After processing, loosen the limit nut and fastening bolt, remove the clamp and limit hook, and separate the two semi-circular castings.

[0024] This device uses bolt connections and clamping plates for fixation, which avoids the risk of cracks caused by welding and cutting, reduces damage to the surface of castings, improves the surface quality of castings, and at the same time greatly shortens the preparation time before processing and the disassembly time after processing, thus improving production efficiency.

Claims

1. A fastening device for machining a semi-circular casting that is easy to disassemble, comprising a first semi-circular casting (1), a second semi-circular casting (2), and a crossbeam (4), characterized in that: The first semicircular casting (1) and the second semicircular casting (2) are symmetrically distributed, and vertical plates (3) are respectively provided at both ends of the first semicircular casting (1) and the second semicircular casting (2). A crossbeam (4) is provided above the vertical plate (3). A clamping plate (5) is provided below both ends of the crossbeam (4), and the clamping plate (5) is located outside the vertical plate (3). Fastening bolts (6) are provided on the side of the clamping plate (5). A lifting lug (7) is provided on the top of the crossbeam (4). There are two crossbeams (4), which are respectively provided above the vertical plate (3) at the end of the semicircular casting. The front and rear ends of the crossbeam (4) extend out of the side of the vertical plate (3).

2. The fastening device for easy disassembly of a semi-circular casting as described in claim 1, characterized in that: The first semicircular casting (1) and the second semicircular casting (2) are two identical castings, and the vertical plates (3) at the ends of the two semicircular castings are closely attached to each other to form a circular cross section.

3. The fastening device for machining a semi-circular casting that is easy to disassemble according to claim 1, characterized in that: The clamping plate (5) is located in the middle of the side of the crossbeam (4). The top of the inner end of the crossbeam (4) is provided with through holes on both sides, and a limit hook (8) is passed through the through hole. The limit hook (8) is located on both sides of the vertical plate (3).

4. The fastening device for machining a semi-circular casting that is easy to disassemble according to claim 3, characterized in that: The limiting hooks (8) are distributed in an L-shape. The bottom of the limiting hooks (8) is hooked to the bottom of the semi-circular casting, and the top of the limiting hooks (8) is provided with matching limiting nuts (9).

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