Assembly device for welding weight measuring mechanism mounting seat of railway wagon

Abstract

The utility model belongs to the field of railway wagon part welding, and particularly relates to an assembly device for railway wagon weight measuring mechanism mounting seat welding, which comprises a center plate pin, a connecting rod, a bottom plate, a centering plate and a positioning pin, one end of the connecting rod is horizontally fixed above the center plate pin, and the centering plate is vertically fixed below the other end of the connecting rod. The centering plates on the two sides of the connecting rod are symmetrical, the bottom plate is horizontally fixed above the middle of the connecting rod, the bottom plates on the two sides of the connecting rod are symmetrical, the center plate pin is a cylindrical plate, the bottom plate is a cuboid, through holes are formed in the four corners of the bottom plate, a stud is arranged at one end of the positioning pin, a cylinder is arranged at the other end of the positioning pin, and the stud end penetrates into the through hole of the bottom plate from bottom to top. And a nut is connected and fastened on the bottom plate. The device is simple in structure, convenient to operate, stable in size, good in consistency, free of lineation and not prone to errors, the space assembly size of the weight measuring mechanism installation base is effectively controlled, time is shortened, and working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of welding of railway freight car parts, and particularly relates to an assembly device for welding an installation seat of a weighing mechanism of a railway freight car. Background Art

[0002] As a traditional fixed component of a railway freight car body, the center plate not only bears the self-weight of the car body but also the load of the goods on the freight car. The weighing mechanism measures the weight of the railway freight car through the center plate. The weighing mechanism is fixed through an installation seat of the weighing mechanism. The installation seat of the weighing mechanism is group-welded on the component composed of the center sill of the car body steel structure. At the same time, the installation seat of the weighing mechanism is a hanging seat for vehicle braking device accessories. The assembly quality and precision of the installation seat of the weighing mechanism directly affect the assembly quality of the railway freight car braking device, and the assembly quality of the braking device directly affects the driving safety of the railway freight car.

[0003] The traditional welding method for the installation seat of the weighing mechanism is that the operator measures with a steel tape according to the drawing requirements and draws the vertical and horizontal position lines of the assembly position of the accessories, and then assembles and welds. The marking time is long, the dimensional accuracy is not high, it is easy to make mistakes, so the repair rate is high and the productivity is low, which affects the manufacturing quality of the product and poses a safety hazard to the driving. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an assembly device for welding an installation seat of a weighing mechanism of a railway freight car, and solve the problems of long traditional welding marking time and low dimensional accuracy.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The assembly device for welding an installation seat of a weighing mechanism of a railway freight car includes a center plate pin, a connecting rod, a bottom plate, a centering plate and a positioning pin. One end of the connecting rod is horizontally fixed above the center plate pin. The other end of the connecting rod is vertically fixed with the centering plate below, and the centering plates on both sides of the connecting rod are symmetrical. The middle part of the connecting rod is horizontally fixed with the bottom plate above, and the bottom plates on both sides of the connecting rod are symmetrical. The center plate pin is a cylindrical plate, which fits with the center plate hole of the railway freight car body. The bottom plate is a cuboid, and through holes are provided at the four corners of the bottom plate. The hole pitch of the 2 through holes on one side of the connecting rod is the same as the hole pitch of the installation seat of the weighing mechanism. One end of the positioning pin is a stud and the other end is a cylinder. The stud end penetrates upward through the through hole of the bottom plate and is connected and fastened to the bottom plate with a nut.

[0007] Further, the centering plate is a flat plate with an irregular shape. The upper part of the centering plate is an isosceles trapezoid, and the lower part is a rectangle. Notches are provided at both ends of the bottom of the rectangle, and the bottom notches fit with the inner cavity formed by the center sill.

[0008] Further, the connecting rod is a square tube.

[0009] Further, the length of the upper base of the isosceles trapezoid above the centering plate is the same as the side length of the cross-section of the connecting rod.

[0010] Further, the bottom plate is a steel plate.

[0011] The beneficial effects achieved by the present utility model are as follows:

[0012] The device has a simple structure and convenient operation. By combining the bottom plate, center plate pin, connecting rod with the centering plate and positioning pin, the spatial assembly dimensions of the weighing mechanism mounting seat are effectively controlled. The dimensions are stable, with good consistency, no need for scribing, not easy to make mistakes, shortening the time, improving work efficiency, ensuring product quality, and avoiding potential safety hazards in the operation of the crane. Description of the Drawings

[0013] Figure 1 is the front view of the structure of the present utility model;

[0014] Figure 2 is the top view of the structure of the present utility model;

[0015] Figure 3 is the schematic diagram of the centering plate structure of the present utility model;

[0016] Figure 4 is the schematic diagram of the positioning pin structure of the present utility model;

[0017] Figure 5 is the state diagram of the present utility model when in use;

[0018] Figure 6 is the schematic diagram of the A-A cross-section of the state diagram of the present utility model when in use;

[0019] Figure 7 is the schematic diagram of the B-B cross-section of the state diagram of the present utility model when in use.

[0020] Description of the reference numerals: 1, center plate pin; 2, connecting rod; 3, bottom plate; 4, centering plate; 5, positioning pin; 6, nut; 7, center sill assembly; 8, reinforcing plate; 9, weighing mechanism mounting seat; 10, upper center plate. Detailed Description of the Embodiment

[0021] The technical solution of the present utility model will be described in detail below in conjunction with the embodiments and the drawings.

[0022] As Figures 1-4As shown in the figure, the assembling device for welding the weighing mechanism mounting seat of railway freight cars includes a center plate pin 1, a connecting rod 2, a bottom plate 3, a centering plate 4 and a positioning pin 5. One end of the connecting rod 2 is horizontally fixed above the center plate pin 1. The other end of the connecting rod 2 vertically fixes the centering plate 4 below, and the centering plates 4 on both sides of the connecting rod 2 are symmetrical. Above the middle of the connecting rod 2, the bottom plate 3 is horizontally fixed, and the bottom plates 3 on both sides of the connecting rod 2 are symmetrical. The center plate pin 1 is a cylindrical plate with a thickness of 33 mm, which fits with the upper center plate hole of the railway freight car body. The connecting rod 2 is a square tube. The bottom plate 3 is a rectangular steel plate with a thickness of 8 mm and a flatness not greater than 0.5 mm. Through holes are provided at the four corners of the bottom plate 3, and the diameter of the through holes is 16 mm. The hole pitch of the two through holes on one side of the connecting rod 2 is the same as the hole pitch of the weighing mechanism mounting seat, and the dimensional error is not greater than 0.5 mm. The centering plate 4 is an irregular-shaped flat plate with a thickness of 5 mm. The upper part of the centering plate 4 is an isosceles trapezoid, and the lower part is a rectangle. Notches are provided at both ends of the bottom of the rectangle, and the inner cavity formed by the bottom notch and the center sill 7 fits. The upper base length of the isosceles trapezoid above the centering plate 4 is the same as the cross-sectional side length of the connecting rod 2. The positioning pin 5 is divided into upper, middle and lower sections. The upper section is an M16 thread with a length of 30 mm, which is inserted into the through hole of the bottom plate 3 from bottom to top and fastened to the bottom plate 3 with a nut 6. The middle section has a diameter of 20 mm and a length of 55 mm, and the lower section has a diameter of 12 mm and a length of 15 mm. By combining the bottom plate, the center plate pin, the connecting rod with the centering plate and the positioning pin, the spatial assembling dimensions of the weighing mechanism mounting seat can be effectively controlled, with stable dimensions and good consistency.

[0023] Working principle: As shown in Figures 5-7 the figure, insert the center plate pin 1 into the center hole of the upper center plate 10 of the railway freight car body, insert the bottom end of the centering plate 4 into the inner cavity of the center sill assembly 7, insert the lower sections of the positioning pins 5 at the four corners of the bottom plate 3 into the long holes of the two assembled parts of the weighing mechanism mounting seat 9 respectively, and make its non-hole pressing plane fit with the reinforcing plate 8 of the center sill assembly 7. Then, horizontally and parallelly move the two weighing mechanism mounting seats 9 outward so that the outer arc edges of their two long holes are in contact with the inner sides of the two positioning pins 5, and weld the two weighing mechanism mounting seats 9 to the reinforcing plate 8.

Claims

1. A pairing device for welding the mounting seat of a railway wagon weighing mechanism, characterized in that, It includes a center plate pin (1), a connecting rod (2), a bottom plate (3), a centering plate (4) and a positioning pin (5). One end of the connecting rod (2) is horizontally fixed above the center plate pin (1). The other end of the connecting rod (2) vertically fixes the centering plate (4) below, and the centering plates (4) on both sides of the connecting rod (2) are symmetrical. Above the middle part of the connecting rod (2), the bottom plate (3) is horizontally fixed, and the bottom plates (3) on both sides of the connecting rod (2) are symmetrical. The center plate pin (1) is a cylindrical plate, which fits into the upper center plate hole of the railway freight car body. The bottom plate (3) is a cuboid, and through holes are provided at the four corners of the bottom plate (3). The hole pitch of the two through holes on one side of the connecting rod is the same as the hole pitch of the weighing mechanism mounting seat. One end of the positioning pin (5) is a stud, and the other end is a cylinder. The stud end penetrates upward through the through hole of the bottom plate (3) and is connected and fastened to the bottom plate (3) with a nut (6).

2. The alignment device for welding the mounting seat of the weighing mechanism of a railway freight car according to claim 1, characterized in that, The centering plate (4) is a flat plate with an irregular shape. The upper part of the centering plate (4) is an isosceles trapezoid, and the lower part is a rectangle. Notches are provided at both ends of the bottom of the rectangle, and the inner cavity formed by the bottom notch and the center sill fits.

3. The alignment device for welding the mounting seat of the weighing mechanism of railway freight cars according to claim 2, wherein, The connecting rod (2) is a square tube.

4. The alignment device for welding the mounting seat of the weighing mechanism of a railway freight car according to claim 3, characterized in that, The length of the upper base of the isosceles trapezoid above the centering plate (4) is the same as the length of the cross-section side length of the connecting rod (2).

5. The assembly device for welding the mounting seat of the weighing mechanism of a railway freight car according to any one of claims 1 or 4, characterized in that, The bottom plate (3) is made of steel plate.

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