Storage rack for shot blasting of inner cavity of axle housing casting of loading machine

Abstract

The utility model discloses a placing rack for shot blasting of an inner cavity of an axle housing casting of a loading machine. A trolley base is a frame of a trolley with driving wheels; the bottoms of the supporting frames are welded to the trolley base, the supporting frames are arranged side by side left and right, each supporting frame comprises a base plate, a connecting square pipe, a left trapezoidal supporting plate and a right trapezoidal supporting plate, a semicircular groove opening is formed in the middle of the top edge of each supporting plate, an inverted-T-shaped base plate is welded to the bottom edge, and the two supporting plates are connected through the connecting square pipes; the swing tray comprises a bottom plate, two triangular arm plates, a rotating shaft and an adjusting bolt, a special-shaped hole in the same shape as the cross section of an axle housing and an axle bag is formed in the middle of the bottom plate, through holes are formed in the middles of the arm plates to assemble the rotating shaft, and the two arm plates are welded to the front edge and the rear edge of the bottom plate. The four adjusting bolts are arranged close to the left edge and the right edge of the bottom plate respectively, and the two adjusting bolts are arranged close to the left edge and the right edge of the bottom plate respectively. The axle housing cleaning device solves the problems that the cleaning operation efficiency in an existing axle housing is low, and potential safety hazards exist.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling for machining parts of mechanical equipment, in particular to a placement rack for shot blasting the inner cavity of axle housing castings of loaders. Specifically, it relates to a placement rack for quickly determining the placement direction and position of axle housing castings when shot blasting the inner cavity of axle housing castings of various models of loaders, so as to facilitate the cleaning of residues such as sticky sand, slag inclusions, oxide scale, etc. in the inner cavity of the axle housings on both sides. Background Art

[0002] Loader axle housings come in a wide variety of models. These castings often feature long, irregularly shaped housings. Due to the casting process, the inner cavity of the axle housing casting contains a certain amount of surface debris, such as sand, slag, and scale. These debris must be cleaned from the bridge cladding and the inner cavity of the bridge arms. This cleaning operation must be performed on a rack. Existing racks for cleaning the axle housing typically tilt the axle housing at a 30° angle and hoist the housing onto the rack in two steps. This drawback is not only inconvenient and inefficient to operate, but also poses a safety hazard. Summary of the Invention

[0003] The purpose of the utility model is to provide a placement rack for shot blasting the inner cavity of axle housing castings of a loader, which is suitable for various types of axle housings, has low processing cost, and is safe and efficient to operate, so as to solve the problems of low efficiency and safety hazards in the cleaning operation inside the existing axle housing.

[0004] To achieve the above purpose, the placement rack for shot blasting of the inner cavity of the bridge housing casting of the loader of the present invention includes a trolley base 1, a support frame 2 and a swinging tray 3; the trolley base 1 is a frame of a trolley with a driving wheel; the support frame 2 is provided with two groups, and the bottom of each group of support frames 2 is welded to the trolley base 1 as a whole, so that the two groups of support frames 2 are arranged side by side on the left and right, and each group of support frames 2 includes a support plate 2-1, a pad 2-2 and a connecting square tube 2-3, and one of the support plates 2-1 is provided on each side, which is a trapezoidal plate with a semicircular groove opening in the middle of the top edge, and the bottom edge is welded to the inverted T-shaped pad 2-2, and the two support plates 2-1 are connected together by the connecting square tube 2-3; the swinging tray 3 includes a bottom plate 3-1, an arm plate 3-2, a rotating shaft 3-3 and an adjusting bolt 3-4, and the middle part of the bottom plate 3-1 is provided with a cross-section at the bridge bag of the bridge housing. The arm plates 3-2 have a special-shaped hole that matches the shape of the surface. The arm plates 3-2 are provided with two pieces, which are triangular structures with a through hole in the middle. The shaft body of the rotating shaft 3-3 is tightly fitted into the middle through hole of the arm plate 3-2. The diameter of the shaft body is slightly smaller than the semicircular groove opening of the support frame 2, so that the swing tray 3 can rotate flexibly around the rotating shaft 3-3 without getting stuck. The shaft head of the rotating shaft 3-3 is welded to the arm plate 3-2 as a whole. The bottom edges of the two arm plates 3-2 are respectively welded vertically to the front and rear edges of the base plate 3-1, and the overall center of gravity of the swing tray 3 is located directly below the center line of the rotating shaft 3-3. When the rotating shafts 3-3 on both sides of the swing tray 3 are installed in the semicircular groove opening of the support frame 2, they are in a naturally horizontal state under the action of gravity for the bridge housing to be hoisted. There are four adjusting bolts 3-4, two of which are arranged on each of the left and right edges near the base plate 3-1.

[0005] The utility model of the placement rack for shot blasting the inner cavity of the loader bridge housing casting has the following technical features and beneficial effects:

[0006] 1. When shot blasting the inner cavity of the bridge housing castings of various types of loaders, the workpiece is hoisted at one time, and the bridge housing can be quickly placed in two directions by swinging and rotating, which is convenient for quickly cleaning the inner cavity of both sides of the bridge housing, such as sand, slag, oxide scale and other debris.

[0007] 2. The tooling has a simple and compact structure, low production and maintenance costs, safe operation, convenient and efficient use, and is suitable for various types of bridge housings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a schematic diagram of the main structure of a placement rack for shot blasting the inner cavity of a loader bridge housing casting.

[0009] Figure 2 The utility model is a schematic diagram of the left side structure of a placement rack for shot blasting the inner cavity of a loader bridge housing casting.

[0010] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a placement rack for shot blasting the inner cavity of a loader bridge housing casting.

[0011] Figure 4 yes Figure 1 Schematic diagram of the main structure of the middle support frame.

[0012] Figure 5 yes Figure 1 Schematic diagram of the left view of the middle support frame.

[0013] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle support frame.

[0014] Figure 7 yes Figure 1 Schematic diagram of the main structure of the middle swing pallet.

[0015] Figure 8 yes Figure 1 Schematic diagram of the left view structure of the middle swing pallet.

[0016] Figure 9 yes Figure 1 Schematic diagram of the structure of the middle swing tray from a top view.

[0017] Figure 10 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle swing tray.

[0018] Reference numerals: trolley base 1, support frame 2, support plate 2-1, pad 2-2, connecting square tube 2-3, swing tray 3, bottom plate 3-1, arm plate 3-2, rotating shaft 3-3, adjusting bolt 3-4. DETAILED DESCRIPTION

[0019] The specific implementation of the placement rack for shot blasting the inner cavity of the loader bridge housing casting of the present invention is further described in detail below with reference to the accompanying drawings.

[0020] Figures 1-10As shown, the placement rack for shot blasting the inner cavity of the bridge housing casting of the loader of the present invention includes a trolley base 1, a support frame 2 and a swing tray 3; the trolley base 1 is a frame of a trolley with a driving wheel; the support frame 2 is provided with two groups, and the bottom of each group of support frames 2 is welded to the trolley base 1 as a whole, so that the two groups of support frames 2 are arranged side by side on the left and right, and each group of support frames 2 includes a support plate 2-1, a pad 2-2 and a connecting square tube 2-3, and one support plate 2-1 is provided on each side, which is a trapezoidal plate with a semicircular groove opening in the middle of the top edge, and the bottom edge is welded to the inverted T-shaped pad 2-2, and the two support plates 2-1 are connected together by a connecting square tube 2-3; the swing tray 3 includes a bottom plate 3-1, an arm plate 3-2, a rotating shaft 3-3 and an adjusting bolt 3-4, and the middle part of the bottom plate 3-1 is provided with a cross-sectional shape corresponding to the bridge bag of the bridge housing. The arm plates 3-2 have corresponding special-shaped holes. The arm plates 3-2 are provided with two triangular structures with a through hole in the middle. The shaft body of the rotating shaft 3-3 is tightly fitted in the middle through hole of the arm plate 3-2. The diameter of the shaft body is slightly smaller than the semicircular groove opening of the support frame 2, so that the swing tray 3 can rotate flexibly around the rotating shaft 3-3 without getting stuck. The shaft head of the rotating shaft 3-3 is welded to the arm plate 3-2 as a whole. The bottom edges of the two arm plates 3-2 are respectively welded vertically to the front and rear edges of the base plate 3-1, and the overall center of gravity of the swing tray 3 is located directly below the center line of the rotating shaft 3-3. When the rotating shafts 3-3 on both sides of the swing tray 3 are installed in the semicircular groove opening of the support frame 2, they are in a naturally horizontal state under the action of gravity for the bridge housing to be hoisted. There are four adjusting bolts 3-4, two of which are arranged on each of the left and right edges near the base plate 3-1.

[0021] The following describes the operation of the placement rack for shot blasting the inner cavity of the loader bridge housing casting of the present invention.

[0022] 1. When hoisting the first axle housing casting:

[0023] (1) Use a hoist to hoist the horizontal bridge housing into the special-shaped hole of the swing tray 3;

[0024] (2) When the sling is not loosened, adjust the height of the four adjusting bolts 3-4 of the swing tray 3 so that the adjusting bolts 3-4 can assist in supporting and pressing against the lower arc surface of the bridge arm blanks on both sides of the bridge housing.

[0025] 2. After the axle housing casting is hoisted and tilted to the left:

[0026] (1) Lift the first bridge housing casting onto the special-shaped hole of the tooling, adjust the bolts 3-4 and then loosen the lifting device. Since the center of gravity of the bridge housing casting and the swinging tray 3 is obliquely above the rotating shaft 3-3, the bridge housing casting and the swinging tray 3 will tilt to the left under the action of gravity. Continue to lower the lifting device until the bridge housing casting and the swinging tray 3 tilt until the bridge housing casting shaft tube hits the square tube mold beam of the trolley base 1, then remove the lifting device, and complete the operation of the bridge housing casting in the left tilting position state during internal shot peening.

[0027] (2) Complete the hoisting of the second bridge housing casting using the same steps and methods;

[0028] (3) Start the internal shot blasting process until the inner cavity of the bridge housing casting and the inner cavity of the left end arm are cleaned.

[0029] 3. When the swing axle housing is tilted to the right:

[0030] (1) After cleaning the inner cavity of the axle housing casting and the inner cavity of the left end arm, grab the right end shaft head of the first axle housing casting and pull it down. The axle housing casting and the swing tray 3 rotate along the rotation axis 3-3. First, turn the axle housing casting to a horizontal position, and then continue to tilt to the right until the axle tube on the right side of the axle housing casting hits the square tube mold beam of the trolley base 1;

[0031] (2) Use the same steps to swing the second axle housing casting to the right tilted state;

[0032] (3) Start the internal shot blasting process until the inner cavity of the bridge housing casting and the inner cavity of the right end arm are cleaned;

[0033] (4) After the inner cavity of the bridge housing casting is shot blasted, the tilted bridge housing casting is lifted off the tooling with a special lifting device, and the swing frame tooling is restored to a horizontal position.

[0034] The utility model discloses a double-station swing frame for shot blasting inside the bridge housing of a loader, which is suitable for bridge housing castings of various models and different specifications and lengths, has the characteristics of simple structure, convenient and efficient use, and safe operation, thereby greatly improving production efficiency.

Claims

1. A placement rack for shot blasting the inner cavity of axle housing castings of a loader, characterized by: The invention comprises a trolley base (1), a support frame (2) and a swing tray (3); the trolley base (1) is a frame of a trolley with a driving wheel; the support frame (2) is provided with two groups, the bottom of each group of support frames (2) is welded to the trolley base (1) as a whole, so that the two groups of support frames (2) are arranged side by side on the left and right, and each group of support frames (2) comprises a support plate (2-1), a pad (2-2) and a connecting square tube (2-3), and the support plate (2-1) is provided with one on each side, which is a trapezoidal plate with a semicircular groove opening in the middle of the top edge, and the bottom edge is welded to the inverted T-shaped pad (2-2), and the two support plates (2-1) are connected together through the connecting square tube (2-3); the swing tray (3) comprises a bottom plate (3-1), an arm plate (3-2), a rotating shaft (3-3) and an adjusting bolt (3-4), and the middle part of the bottom plate (3-1) is provided with a special-shaped hole that matches the cross-sectional shape of the bridge shell. The arm plate (3-2) is provided with two pieces, which are triangular structures with a through hole in the middle. The shaft body of the rotating shaft (3-3) is tightly fitted in the through hole in the middle of the arm plate (3-2). The diameter of the shaft body is slightly smaller than the semicircular groove opening of the support frame (2), so that the swing tray (3) can flexibly rotate around the rotating shaft (3-3) without getting stuck. The shaft head of the rotating shaft (3-3) and the arm plate (3-2) are welded into one body. The bottom edges of the two arm plates (3-2) are respectively welded vertically to the front and rear edges of the base plate (3-1), and the overall center of gravity of the swing tray (3) is located directly below the center line of the rotating shaft (3-3). When the rotating shafts (3-3) on both sides of the swing tray (3) are installed in the semicircular groove opening of the support frame (2), they are in a naturally horizontal state under the action of gravity for the bridge housing to be hoisted. There are four adjusting bolts (3-4), two of which are respectively provided on the left and right edges close to the base plate (3-1).

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