A special tool for brake pressure test

Abstract

The present invention discloses a special tool for brake pressure test, comprising a symmetrically arranged support plate and an adjusting plate, wherein the upper end and the lower end of the support plate are both provided with support members perpendicular to the support plate, and the adjusting plate is provided with a first socket for inserting the support member at one end away from the support plate. The special tool for brake pressure test provided by the present invention can be disassembled and transported to various work sites for pressure test of the brake, and has good stability, will not separate due to pressure, and some components will not collapse, so that the safety of the pressure test is greatly improved, and it is also convenient for assembly and disassembly, and the time required for the pressure test is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of brake maintenance, in particular to a special tool for brake pressure resistance test. Background Art

[0002] The brake is a relatively important component in the generator. It can lift the rotor to achieve rapid shutdown of the generator or assist in the maintenance and startup of the generator. Specifically, when the generator set is shut down, the speed will gradually decrease. When the speed drops to a certain value, there will be a problem that the speed required by the oil film cannot be met, causing semi-dry friction between the two metal surfaces, which is easy to cause damage to the thrust pad. At this time, the brake is needed to lift the rotor and quickly stop the generator set, thereby shortening the running time of the thrust pad under semi-dry friction; at the same time, when the generator set is overhauled, the brake is often needed to lift the rotor, such as checking the thrust pad, disassembly of the shaft when the rotating part is disassembled, etc.; in addition, when restarting after a long shutdown, the brake is also needed to lift the rotor first, let the lubricating oil enter the pad surface, and then drop the rotor to start using. These functions of the brake require the brake piston to generate enough thrust to push the rotor. Therefore, the brake not only needs to be tested for withstand voltage when it is newly installed, but also needs to be tested and repaired in time during use to ensure the normal operation of the engine.

[0003] At present, when the brake is subjected to pressure test, the tools used are basically integrally welded tools, that is, the tools are welded into an integral frame, such as a square frame, and then the brake is placed in the frame for testing. When testing a new brake to be installed, such a tool can directly put the brake into it for testing, but when testing an already installed brake, problems will arise. For example, in some hydropower stations with compact foundation structures, it is difficult to directly hoist and transport large-sized pressure test tools into the wind tunnel. When the unit is under minor repair (without the conditions for hanging the rotor) and the brake needs to be inspected, it is difficult to use such a pressure test tool to test the brake.

[0004] Of course, there are also some tools that use bolts for connection. Such tools are generally split into two parts, the bottom bracket and the upper cover. After the bracket is welded, the brake is placed in it, and then the upper cover is fixed to the bracket with bolts. Although this method can be split to a certain extent and is relatively less difficult to transport than tools made of integral welding, its pressure resistance is extremely poor. The pressure is completely borne by bolts, which can easily cause the bolts to deform or even break, causing the upper cover to collapse directly, which not only affects the test results, but also easily injures staff or damages equipment in the power station, causing safety accidents. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a special tool for brake pressure resistance test, which can be applied to different environments and has good pressure resistance.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A special tool for brake pressure test comprises a symmetrically arranged support plate and an adjusting plate, wherein the upper and lower ends of the support plate are both provided with support members perpendicular to the support plate, and the adjusting plate is provided with a first socket for inserting the support member away from one end of the support plate.

[0008] Furthermore, the support plate is provided with a second socket for inserting the support member.

[0009] Furthermore, the support member includes two support rods arranged in parallel, and the two support rods are located on the same horizontal plane.

[0010] Furthermore, the first socket and the second socket are through holes penetrating the adjustment plate and the support plate respectively.

[0011] Furthermore, the support rod is an I-beam, and the first socket and the second socket are adapted to the shape of the support rod.

[0012] Furthermore, the wing plates of the I-beams at the upper and lower ends of the support plate are opposite to each other.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. When conducting the brake pressure test, the support plate and the adjustment plate support can be directly transported to the test site for assembly without the need for lifting and transportation, which improves the convenience of transportation and use;

[0015] 2. When assembling the tool, there is no need to use threads or welding, and it can be directly plugged in, which effectively improves the convenience of installation, greatly improves the efficiency of the brake pressure test, reduces the operating burden of the staff, and does not affect the next use after disassembly, and has good reusability;

[0016] 3. The support parts are directly connected to the support plates and the adjustment plates, and the force acts directly on the support parts. Compared with traditional welding and bolt connections, they will not come off due to excessive pressure, which significantly improves the pressure resistance and the safety of the pressure test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure after the tool is assembled;

[0018] Figure 2 It is a schematic diagram of the exploded structure of the tool;

[0019] Figure 3 Schematic diagram of the connection structure between the support rod and the support plate;

[0020] Figure numerals: 1-support plate, 2-adjusting plate, 3-support member, 4-support rod, 5-first socket, 6-second socket. DETAILED DESCRIPTION

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be fixed connection, detachable connection, or integrated connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example

[0023] This embodiment provides a special tool for brake pressure test. Figure 1 As shown, it includes a symmetrically arranged support plate 1 and an adjusting plate 2, and the upper and lower ends of the support plate 1 are both provided with a support member 3 perpendicular to the support plate 1, and the adjusting plate 2 is provided with a first socket 5 for inserting the support member 3 away from the support plate 1. Among them, the support plate 1 and the adjusting plate 2 play a supporting role and need to have good strength. Generally, steel plates can be selected. The thickness and width can be adjusted according to the test requirements, which are generally determined according to the external dimensions of the power station brake. Of course, under normal circumstances, the adjusting plate 2 and the support plate 1 with a thickness of about 3 cm can play an excellent supporting role. The support member 3 is used to limit the upper and lower ends of the brake. When performing a pressure test, the brake is placed on the support member 3 below, and the force of the piston is mainly applied to the support member 3 above. Of course, the support member 3 can be a rod or a plate, as long as its end is provided with a connecting portion that cooperates with the first socket 5, and the first socket 5 can be a structure such as a slot or a hole set on the adjusting plate 2, as long as it can support and limit the support member 3.

[0024] The support member 3 and the support plate 1 can be connected in a fixed or detachable manner, but it is best to adopt a plug-in method like the adjustment plate 2, so that assembly and disassembly are extremely convenient, and the pressure resistance will not be affected at all. Therefore, please refer to Figure 2 , Figure 3 As shown, a second socket 6 for inserting the support member 3 can be provided on the support plate 1, so that the support member 3, the support plate 1 and the adjusting member can be separated for transportation, assembled together when used, and disassembled and taken away from the site after use. That is, when it is reused multiple times, the use experience is exactly the same as the first time and will not be affected in any way.

[0025] In order to effectively support the brake, the support member 3 includes two support rods 4 arranged in parallel, and the two support rods 4 are located on the same horizontal plane. This arrangement enables it to better support the brake and limit the piston, thereby improving the effect of the pressure test. Of course, more support rods 4 can be set, but generally speaking, two can already provide an excellent supporting effect. In order to better limit the position of the brake, the first socket 5 can be a through hole that penetrates the adjustment plate 2, and the second socket 6 can be a through hole that penetrates the support plate 1. The support rod 4 penetrates the first socket 5 and the second socket 6. By pushing the support plate 1 and the adjustment plate 2, the relative distance between the two can be adjusted, so that it can better adapt to the size of the brake, and at the same time, the stability of the connection between the support rod 4 and the support plate 1 and the adjustment plate 2 can be improved. Of course, in order to better improve the stability of the connection between the support rod 4 and the support plate 1 and the adjustment plate 2, the support rod 4 can be set to an I-shape, and the first socket 5 and the second socket 6 are adapted to the shape of the support rod 4 and are also set to an I-shaped through hole. Of course, the gear of the I-shaped through hole can be made 2-3mm larger than the outside of the support rod 4 to facilitate assembly. When in use, the support rod 4 needs to bear the brake and withstand the force applied by the piston, so that the support rod 4 requires excellent load-bearing capacity. Therefore, the support rod 4 can be made of I-beam. Of course, it is best to set the support rods 4 at the upper and lower ends of the support plate 1 directly opposite each other, even if the wing plates of the I-beam are opposite, so as to further enhance its force effect.

[0026] When conducting a withstand voltage test, the specific operation can be carried out as follows:

[0027] 1. Transport the support plate 1, adjustment plate 2 and I-beam to the work site;

[0028] 2. Place the support plate 1 and the adjustment plate 2 on a stable and hard ground or other platform, and then install the four I-beams on the support plate 1 and the adjustment plate 2 through the first socket 5 and the second socket 6;

[0029] 3. Install the brake between the upper and lower I-beams, and place used brake shoes or steel plates between the brake (including brake shoes) and the upper I-beam to ensure that the lifting distance of the brake shoes in contact with the brake does not exceed the safety value during the pressure test. Then the test can be carried out.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A special tool for brake pressure test, characterized in that: It comprises a support plate (1) and an adjustment plate (2) which are symmetrically arranged, wherein the upper end and the lower end of the support plate (1) are both provided with a support member (3) which is perpendicular to the support plate (1), and the adjustment plate (2) is provided with a first socket (5) for inserting the end of the support member (3) away from the support plate (1); The support plate (1) is provided with a second socket (6) for inserting the support member (3); The first socket (5) is a through hole that penetrates the adjustment plate (2); The second socket (6) is a through hole penetrating the support plate (1); The support member (3) comprises two support rods (4) arranged in parallel, and the two support rods (4) are located on the same horizontal plane; The support rod (4) is an I-beam, the first socket (5) and the second socket (6) are adapted to the shape of the support rod (4); and the support rod (4) passes through the first socket (5) and the second socket (6); When conducting a withstand voltage test, the following operations are included: Transporting the support plate (1), the adjustment plate (2) and the I-beam to the work site; Place the support plate (1) and the adjustment plate (2) on a stable and hard ground or other platform, and then install four I-beams on the support plate (1) and the adjustment plate (2) through the first socket (5) and the second socket (6); Install the brake between the upper and lower I-beams, and place used brake shoes or steel plates between the brake and the upper I-beam to ensure that the lifting distance of the brake shoes in contact with the brake does not exceed the safety value during the pressure test. Then you can carry out the test.

2. The brake pressure test special tool according to claim 1, characterized in that: The wing plates of the I-beams at the upper and lower ends of the support plate (1) are opposite to each other.

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