Shaft assembly tool for 27.5 kV grounding device

Abstract

The utility model discloses a shaft assembly tool for a 27.5 kV grounding device, which comprises a base, a stud is arranged on the base, an adjusting block is mounted on the stud in a threaded manner, the upper end of the adjusting block is positioned in a positioning clamp, and a groove is formed in the upper end of the positioning clamp. The tool has the advantages that the tool is fixed to the bottom of the mechanism box and located at the two ends of the inner shaft of the mechanism box, the adjusting block is rotated through the wrench to change the height of the adjusting block on the stud, the inner shaft is located in the groove in the positioning clamp, and therefore the parallelism and perpendicularity are guaranteed, accurate butt joint of the motor and the inner shaft is guaranteed, and the work efficiency is improved. And large-scale field debugging is not needed after the equipment is installed, so that the assembling and debugging time is shortened, and the production efficiency and the reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical assembly technical field, especially a kind of shaft assembly tool for 27.5kV grounding device. BACKGROUND

[0002] In transmission mechanism, shaft component is as key transmission element, and its assembly accuracy directly affects the operation performance of whole system. Due to the existence of transmission component, shaft positioning and assembly accuracy requirement is higher, and any improper assembly or positioning error can cause mechanism to appear jam, action not smooth, sensor trigger failure or false triggering and other problems, thereby affecting the normal operation of system. Therefore, in the assembly process of shaft component, it is particularly important to use suitable tool to ensure assembly accuracy and positioning accuracy, especially in high-precision mechanical transmission system, accurate assembly can not only reduce the complexity of later debugging, but also effectively improve the reliability and service life of product.

[0003] Taking 27.5kV grounding device as an example, 27.5kV grounding device is widely used in rail transit industry and is used for grounding protection power system. The reliability of the device is directly related to the stability of line network and the safety of operating personnel. The existing mechanism box increases 5mm thick plate at the bottom and left and right side wall to strengthen. This structure is connected by welding, although the rigidity of mechanism box is improved, but it is difficult to ensure the perpendicularity between bottom plate and side wall, but motor and transmission shaft have higher requirement for the perpendicularity, once the perpendicularity deviates, transmission component may appear jam, jam or inaccurate transmission, which seriously affects the normal work of device. Moreover, due to the limited space in mechanism box, there is no suitable tool designed for these assembly difficulties to ensure the accuracy of assembly in the assembly process, which leads to poor assembly consistency, low accuracy in assembly process, and further increases the workload and difficulty of on-site debugging, also affects the production efficiency and reliability of product. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcomings of prior art, and provides a kind of shaft assembly tool for 27.5kV grounding device.

[0005] The utility model discloses the purpose is realized by the following technical scheme: a kind of shaft assembly tool for 27.5kV grounding device, including base, base is provided with stud, stud is threadedly installed with adjusting block, the upper end of adjusting block is located in positioning clamp, and the upper end of positioning clamp is provided with recess.

[0006] Preferably, the upper end of the adjusting block is provided with a disc a, and the lower end of the positioning clamp is provided with a sleeve that is sleeved outside the disc a.

[0007] Preferably, the horizontal cross section of the adjusting block is a regular hexagon.

[0008] Preferably, the lower end of the base is provided with a disc b, the diameter of the disc b is greater than the diameter of the base.

[0009] Preferably, the groove is in circular arc shape, and the diameter of the groove is same as the diameter of the inner shaft.

[0010] The utility model has the following advantages: the utility model through fixing the tooling at the mechanism box bottom, make it be located at the inner shaft both ends of mechanism box, and change its height on the stud through spanner rotation adjusting block, make the inner shaft be located in the recess on the positioning fixture, thereby guarantee parallelism and perpendicularity, guarantee motor and inner shaft accurate butt joint, make equipment after installation need not large -scale field debugging, reduced assembly debugging time, thereby improved production efficiency and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is structure schematic diagram for shaft assembly tooling;

[0012] Figure 2 It is structure schematic diagram for another view of shaft assembly tooling;

[0013] Figure 3 It is structure schematic diagram for the position relation of shaft assembly tooling in mechanism box;

[0014] In the drawing, 1-base, 2-adjusting block, 3-positioning fixture, 4-stud, 5-recess, 6-inner shaft, 7-mechanism box, 8-sleeve, 9-disc b. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this embodiment, as Figure 1 As shown, a shaft assembly fixture for a 27.5kV grounding device includes a base 1, a stud 4 on the base 1, an adjusting block 2 threaded onto the stud 4, the upper end of the adjusting block 2 being located within a positioning fixture 3, and a groove 5 formed at the upper end of the positioning fixture 3. Preferably, the groove 5 is arc-shaped, and its diameter is the same as the diameter of the inner shaft 6. Figure 3As shown, by fixing the tooling on the bottom of the mechanism box 7, locating it on both ends of the inner shaft 6 of the mechanism box 7, and changing its height on the stud 4 by rotating the adjusting block 2 with a wrench, the inner shaft 6 is located in the groove 5 on the positioning clamp 3, thereby ensuring parallelism and perpendicularity, ensuring accurate butt joint of the motor and the inner shaft 6, avoiding jamming, locking and other fault problems caused by assembly errors, and making the equipment unnecessary for large-scale on-site debugging after installation, reducing assembly and debugging time, thereby improving production efficiency and reliability. The reliability here refers to the fact that due to the improvement of assembly accuracy, the final device runs more smoothly and reliably, reducing faults and safety hazards caused by improper assembly. For example, in a 27.5kV grounding device such as a high-voltage power equipment, reliable assembly can ensure the stability and safety of the equipment during operation, protecting the line safety of the rail transit industry and the safety of the operators. In this embodiment, the base 1 and the stud 4 are integrally formed.

[0022] Further, as shown in Figure 2 The upper end of the adjusting block 2 is provided with a disc a, and the lower end of the positioning clamp 3 is provided with a sleeve 8 which is sleeved outside the disc a. Specifically, when the height of the adjusting block 2 on the stud 4 is changed by rotating it with a wrench, since the sleeve 8 is sleeved outside the disc a, and the diameter of the sleeve 8 is slightly larger than that of the disc a, the positioning clamp 3 only moves up and down, without rotating. Further, the horizontal cross section of the adjusting block 2 is a regular hexagon. Specifically, the main function of the regular hexagonal horizontal cross section of the adjusting block 2 is to facilitate the rotation of the adjusting block 2 by the wrench. In this embodiment, the adjusting block 2 is finely adjusted on the stud 4.

[0023] In this embodiment, the lower end of the base 1 is provided with a disc b 9, and the diameter of the disc b 9 is larger than that of the base 1. Specifically, the diameter of the disc b 9 is larger than that of the base 1, thereby expanding the stress area.

[0024] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shaft assembly tool for a 27.5 kV grounding device, characterized by: It includes base (1), be provided with stud (4) on base (1), be screwed with adjusting block (2) on stud (4), the upper end of adjusting block (2) is located in positioning fixture (3), and the upper end of positioning fixture (3) is provided with recess (5).

2. The shaft assembly tooling for 27.5 kV grounding device according to claim 1, wherein: The upper end of adjusting block (2) is provided with disc a, the lower end of positioning fixture (3) is provided with sleeve (8), and sleeve (8) is sleeved on the outside of disc a.

3. The shaft assembly tooling for 27.5 kV grounding apparatus according to claim 2, wherein: The horizontal section of adjusting block (2) is regular hexagon.

4. The shaft assembly tooling for 27.5 kV grounding apparatus according to claim 3, wherein: The lower end of base (1) is provided with disc b (9), and the diameter of disc b (9) is greater than the diameter of base (1).

5. The shaft assembly tooling for 27.5 kV grounding apparatus according to claim 4, wherein: The recess (5) is circular arc, and the diameter of recess (5) is same with the diameter of inner shaft (6).

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