Device for measuring diameter of wheel of railway wagon

Abstract

The utility model discloses a device for measuring the diameter of a wheel of a railway wagon, which comprises a connecting beam, connecting rods fixedly connected to the bottoms of the two ends of the connecting beam, a positioning body fixedly connected to the bottoms of the two connecting rods, and an upper supporting rod, one end of the upper supporting rod is fixedly connected with a lower measuring rod through the positioning rod, and the other end of the upper supporting rod is fixedly connected with a lower measuring rod. The two lower measuring rods form a go-no go gauge structure. The upper supporting rod can be used for being supported on the end face of a wheel, at the moment, the positioning rod can guarantee that the distance between the upper supporting rod and the lower measuring rods is just 70 mm, the axial requirement during measurement is met, the device is pushed along the end face, and due to the fact that the two lower measuring rods form a go-no go gauge structure, when a go gauge can pass and a no-go gauge cannot pass, it is indicated that the radial size of the wheel is qualified; otherwise, the product is unqualified. The sliding groove is formed in the positioning table, the installation positions of the two positioning bodies can be adjusted in the installation process of the positioning bodies, and therefore the distance between the two lower measuring rods meets the size range of the go-no go gauge.

Description

Technical Field

[0001] The utility model relates to a device for measuring diameter, in particular to a device for measuring the diameter of a railway freight car wheel. Background Art

[0002] After the manufacturing of new wheels for railway freight cars is completed, their diameter needs to be measured to determine whether the diameter of the newly manufactured wheels is qualified. The diameter measurement position of the newly manufactured wheels is on the wheel tread, not on the wheel end face. During the measurement process, the measured dimension should be 70mm axially away from the wheel end face, and the radial dimension should be 845±1mm. There are requirements in both axial and radial directions. Only when the dimensions in both directions are met at the same time, the diameter of the newly manufactured wheel is considered qualified. At present, a wheel diameter ruler is used to measure the diameter of a newly manufactured wheel. During the measurement process, the wheel diameter ruler needs to be erected to measure, and it is also convenient to read. Since the wheels are stacked together in the workshop, it undoubtedly increases the workload of measurement to stand the wheels upright for measurement. Summary of the invention

[0003] The purpose of the utility model is to provide a device for measuring the wheel diameter of a railway freight car. The device has a simple structure, does not need to stand the wheel upright during the measurement process, is relatively convenient for measurement, can effectively measure the wheel diameter while ensuring that the axial distance meets the requirements, and can ensure measurement accuracy.

[0004] The technical solution of the utility model: a device for measuring the wheel diameter of a railway freight car, comprising a laterally arranged connecting beam, the bottoms of both ends of the connecting beam are fixedly connected with vertically arranged connecting rods, the bottoms of the two connecting rods are fixedly connected with axially arranged positioning bodies, the positioning bodies are laterally opened U-shaped structures, comprising an upper support rod, one end of the upper support rod is fixedly connected to a lower measuring rod via a positioning rod, the upper support rod and the lower measuring rod are arranged in parallel, and the two are respectively arranged perpendicular to the connecting rod and the connecting beam, and the two lower measuring rods form a go-no-go gauge structure.

[0005] In the aforementioned device for measuring the diameter of a railway freight car wheel, a positioning platform extending axially is fixed to the bottom of the connecting rod, and a positioning body is fixed to the bottom of the positioning platform.

[0006] In the aforementioned device for measuring the diameter of railway truck wheels, a plurality of slide grooves are provided on the positioning body, and the screws are fixedly connected to the positioning body after passing through the slide grooves.

[0007] In the aforementioned device for measuring the diameter of railway freight car wheels, the positioning body is made of No. 45 steel.

[0008] In the aforementioned device for measuring the diameter of railway freight car wheels, the bottom of the connecting beam is fixedly connected to the connecting rod via an oblique support rod.

[0009] In the aforementioned device for measuring the diameter of railway freight car wheels, the connecting beam, connecting rod and diagonal strut are hollow rods.

[0010] Beneficial effects of the utility model: Compared with the prior art, the utility model is provided with a positioning body, wherein the upper support rod can be used to support the end face of the wheel. At this time, the positioning rod can ensure that the distance between the upper support rod and the lower measuring rod is exactly 70 mm, which meets the axial requirements during measurement. The device is pushed along the end face. Since the two lower measuring rods form a through-no-stop gauge structure, when the through gauge can pass and the no-stop gauge cannot pass, it means that the radial dimension of the wheel meets 845mm±1mm, and the wheel size is qualified, otherwise it is unqualified. The entire measurement process does not require the wheel to be erected, which makes the measurement process simpler and improves the measurement efficiency. By providing a slide groove on the positioning platform, the installation position of the two positioning bodies can be adjusted during the installation of the positioning body, so that the distance between the two lower measuring rods meets the size range of the through-no-stop gauge.

[0011] In summary, the device has a simple structure, does not need to stand the wheel upright during the measurement process, and is relatively convenient to measure. On the premise of ensuring that the axial distance meets the requirements, the wheel diameter can be effectively measured and the measurement accuracy can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the side structure of

[0014] Figure 3 for Figure 1 A schematic diagram of a top view structure;

[0015] Figure 4 Schematic diagram of the structure of the two lower measuring rods.

[0016] Figure numerals: 1-connecting beam, 2-connecting rod, 3-positioning body, 4-upper supporting rod, 5-positioning rod, 6-lower measuring rod, 7-positioning platform, 8-slide groove, 9-oblique support rod. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] Embodiment of the utility model: a device for measuring the diameter of a railway freight car wheel, such as Figure 1-4As shown, it includes a laterally arranged connecting beam 1, and the bottoms of both ends of the connecting beam 1 are welded and fixedly connected with vertically arranged connecting rods 2, and the bottoms of the two connecting rods 2 are fixedly connected with axially arranged positioning bodies 3, and the positioning body 3 is a laterally open U-shaped structure, including a horizontally arranged upper support rod 4, and one end of the upper support rod 4 is fixedly connected to the lower measuring rod 6 via the positioning rod 5, the upper support rod 4 and the lower measuring rod 6 are arranged in parallel, and both are arranged perpendicular to the connecting rod 2 and the connecting beam 1 respectively, and the two lower measuring rods 6 form a go-no-go gauge structure.

[0019] During use, the wheel can be laid flat for measurement without standing it upright. When in use, the upper support rod 4 is supported on the end face of the wheel so that the upper support rod 4 is completely in contact with the end face of the vehicle. At this time, the length of the positioning rod 5 can ensure that the distance between the bottom surface of the upper support rod 4 and the top surface of the lower measuring rod 6 is exactly 70mm, which meets the axial requirements during measurement. Since the two lower measuring rods 6 form a through-stop gauge structure, that is, the front end of the lower measuring rod 6 is a through gauge and the rear end is a stop gauge, the radial distance between the two lower measuring rods 6 is L1=844 +0.1 +0.2 , stop gauge is L2=846 -0.1 -0.2 , and then push the device along the end face. When the through gauge can pass through the wheel tread and the stop gauge cannot pass through, it means that the radial dimension of the wheel meets 845mm±1mm and the wheel dimension is qualified. Otherwise, it is unqualified. The entire measurement process does not require the wheel to be erected, making the measurement process simpler and improving the measurement efficiency.

[0020] A positioning platform 7 extending axially is fixed to the bottom of the connecting rod 2 , and a positioning body 3 is fixed to the bottom of the positioning platform 7 . The positioning platform 7 can ensure that the positioning body 3 is firmly connected to the upper component.

[0021] The positioning body 3 is provided with a plurality of slide grooves 8, and the screws are screwed into the screw holes on the upper support rod 4 of the positioning body 3 after passing through the slide grooves 8, so as to realize the fixed connection between the positioning body 3 and the positioning platform 7. During use, the radial distance between the two lower measuring rods 6 should be ensured to be 844 +0.1 +0.2 , stop rule is 846 -0.1 -0.2 This size can be met by adjusting the installation position of the positioning body 3 on the positioning platform 7. Specifically, the adjustment is to fix one of the positioning bodies 3, and then slightly tighten the screws on the other positioning body 3, and then measure the distance between the two positioning bodies 3. If the distance meets the requirement, tighten the screws; if the distance is too small or too large, make the other positioning body 3 slide outward or inward along the slide groove 8, and then measure the distance until the distance meets the requirement.

[0022] The slide groove 8 may be provided on only one of the positioning bodies 3 , or may be provided on both positioning bodies 3 .

[0023] The positioning body 3 is made of 45# steel to ensure the stability and durability of the positioning body 3 during measurement.

[0024] The bottom of the connecting beam 1 is fixedly connected to the connecting rod 2 via the oblique support rod 9, thereby improving the structural strength and stability of the entire device.

[0025] The connecting beam 1, the connecting rod 2 and the oblique support rod 9 are hollow rods, which can reduce the weight of the entire device and facilitate transportation and use.

Claims

1. A device for measuring the wheel diameter of a railway freight car, characterized in that: The invention comprises a connecting beam (1) arranged transversely, the bottoms of both ends of the connecting beam (1) being fixedly connected to connecting rods (2) arranged vertically, the bottoms of the two connecting rods (2) being fixedly connected to positioning bodies (3) arranged axially, the positioning bodies (3) being a U-shaped structure with a side opening, and comprising an upper support rod (4), one end of the upper support rod (4) being fixedly connected to a lower measuring rod (6) via a positioning rod (5), the upper support rod (4) and the lower measuring rod (6) being arranged in parallel and being arranged perpendicularly to the connecting rod (2) and the connecting beam (1), respectively, and the two lower measuring rods (6) forming a go / no-go gauge structure.

2. The device for measuring the diameter of a railway freight car wheel according to claim 1, characterized in that: A positioning platform (7) extending axially is fixed to the bottom of the connecting rod (2), and a positioning body (3) is fixed to the bottom of the positioning platform (7).

3. The device for measuring the diameter of a railway freight car wheel according to claim 2, characterized in that: The positioning body (3) is provided with a plurality of sliding grooves (8), and the screws are fixedly connected to the positioning body (3) after passing through the sliding grooves (8).

4. The device for measuring the diameter of a railway freight car wheel according to claim 1, characterized in that: The positioning body (3) is made of 45# steel.

5. The device for measuring the diameter of railway freight car wheels according to claim 1, characterized in that: The bottom of the connecting beam (1) is fixedly connected to the connecting rod (2) via an oblique support rod (9).

6. The device for measuring the diameter of a railway freight car wheel according to claim 5, characterized in that: The connecting beam (1), the connecting rod (2) and the diagonal support rod (9) are hollow rods.

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