Constant-pressure spring pressure testing device

Abstract

The utility model belongs to the technical field of motor detection equipment, and discloses a constant-pressure spring pressure testing device, which comprises a fixing assembly and a testing assembly, and is characterized in that the fixing assembly is configured to fix a brush holder so as to enable a constant-pressure spring on the brush holder to be horizontally arranged; the testing assembly comprises a driving part, a carbon brush module is arranged at the output end of the driving part, a pressure sensor is arranged between the carbon brush module and the output end of the driving part, the pressure sensor can be connected with an external data processing device, and the pressure sensor is configured to detect the pressure borne by the carbon brush module. The driving part can drive the carbon brush module to abut against or be far away from the constant-pressure spring fixed by the fixing assembly 1, so that when the constant-pressure spring is tested, data are more accurate, and the detection efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor detection equipment technical field especially relates to a constant pressure spring pressure testing arrangement. BACKGROUND

[0002] In order to guarantee that carbon brush and current collector ring contact well, in the generator design, constant pressure spring is often used to press the excitation carbon brush. The working principle of constant pressure spring is to use coil spring to realize the purpose of constant pressure within a certain amount of stretch. However, with the growth of coil spring use time and high temperature influence, constant pressure spring gradually appears the problem of pressure drop under the same amount of stretch, and further causes the poor contact of carbon brush and current collector ring, thus the problem of poor contact of carbon brush and current collector ring due to insufficient pressure of constant pressure spring frequently occurs in domestic conventional power plants, nuclear power plants and other fields, and the serious one causes ring fire accident.

[0003] Therefore, at present, the power plant needs to detect the pressure of constant pressure spring in the generator overhaul stage and engineering construction stage to meet the design requirements. The maintenance scheme of constant pressure spring has appearance inspection, carbon brush loosening inspection, tension meter or spring scale measurement and other ways. The above-mentioned ways usually lead to inaccurate test data, and the tension meter or spring scale measurement and other ways also need to disassemble and assemble the constant pressure spring from the brush holder, which reduces the detection efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of constant pressure spring pressure testing arrangement, when testing constant pressure spring, data is more accurate, and can improve detection efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Constant pressure spring pressure testing arrangement, it includes:

[0007] Fixed assembly, the fixed assembly is configured to fix brush holder, so that the constant pressure spring on the brush holder can be arranged horizontally;

[0008] Test assembly, the test assembly includes driving part, the output end of the driving part is provided with carbon brush module, pressure sensor is arranged between the carbon brush module and the output end of the driving part, the pressure sensor can be connected with external data processing device, the pressure sensor is configured to detect the pressure received by the carbon brush module, and the driving part can drive the carbon brush module to abut or move away from the constant pressure spring fixed by the fixed assembly.

[0009] In some embodiments, the fixed assembly includes a bottom plate, two limiting blocks are arranged on the bottom plate, and the two limiting blocks can limit the brush box of the brush holder.

[0010] In some embodiments, a first positioning plate is further arranged on the bottom plate, the first positioning plate is arranged between the two limiting blocks, and when the brush box abuts against the first positioning plate, the constant pressure spring is opposite to the carbon brush module.

[0011] In some embodiments, a fixing member is arranged on the bottom plate, and the fixing member is configured to fix the brush handle on the bottom plate.

[0012] In some embodiments, the test assembly further comprises a moving plate, the moving plate is arranged at an output end of the driving member, the pressure sensor is arranged on the moving plate, and the carbon brush module is arranged on the pressure sensor.

[0013] In some embodiments, the test assembly further comprises a guide rail, the guide rail extends along a driving direction of the driving member, and the moving plate is slidably connected to the guide rail.

[0014] In some embodiments, the test assembly further comprises a second positioning plate, the second positioning plate is arranged below the moving plate, a plurality of positioning holes are arranged on the second positioning plate and are spaced apart along the driving direction of the driving member, and a locking member is inserted into the moving plate, the locking member can be inserted into or pulled out of the positioning hole, so that the moving plate can be locked or released.

[0015] In some embodiments, the test assembly further comprises a sensing plate, the sensing plate is arranged below the moving plate, a plurality of sensing grooves are arranged on the sensing plate and correspond to the positioning holes one by one, and a ball head plunger corresponding to the locking member is arranged on the second positioning plate, when the ball head of the ball head plunger is located in the sensing groove, the locking member is opposite to the positioning hole.

[0016] In some embodiments, the constant pressure spring pressure test device further has a base, and the fixing assembly and the test assembly are arranged on the base.

[0017] In some embodiments, the driving member comprises a first rod, a second rod and a handle rod, a first end of the first rod is hinged to a first end of the second rod, a second end of the first rod is hinged to the moving plate, a second end of the second rod is hinged to the base, and the handle rod is fixed to the first rod or the second rod.

[0018] The utility model discloses the beneficial effects of:

[0019] The brush holder can be fixed by the fixing assembly during testing, so that the constant pressure spring horizontally faces the carbon brush module, and then the carbon brush module is driven by the driving member to extend into the brush box and abut against the constant pressure spring, so that the elastic force is transmitted to the external data processing device through the pressure sensor for processing and feedback, so that the constant pressure spring does not need to be disassembled from the brush holder during testing, the detection time and period are shortened, the detection efficiency is improved, and the constant pressure spring is also prevented from being damaged during disassembly. Furthermore, the pressure value is read by the pressure sensor, so as to avoid data deviation and make the detection data more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the constant pressure spring pressure testing device in the utility model;

[0021] Figure 2 is a schematic view of the fixing assembly in the utility model;

[0022] Figure 3 is a schematic view of the testing assembly and the base in the utility model;

[0023] Figure 4 is a schematic view of the carbon brush module abutting against the constant pressure spring in the utility model.

[0024] In the drawings:

[0025] 1, fixing assembly; 11, bottom plate; 12, limiting block; 13, first positioning plate; 14, fixing piece; 141, fixed column; 1411, first column; 1412, second column; 142, limiting plate; 143, locking nut;

[0026] 2, testing assembly; 21, driving member; 211, first rod; 212, second rod; 213, handle rod; 22, carbon brush module; 23, pressure sensor; 24, moving plate; 25, second positioning plate; 251, positioning hole; 26, locking piece; 27, sensing plate; 271, sensing groove; 28, ball head plunger; 29, guide rail;

[0027] 3, base;

[0028] 4, brush holder; 41, brush box; 42, handle; 43, constant pressure spring. DETAILED DESCRIPTION

[0029] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all structures.

[0030] In the description of the utility model, unless another definite provision and limitation, the term "link", "connection", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element's mutual action relation. For ordinary skilled in the art, the above-mentioned term can be understood in the utility model with the specific meaning of the specific situation.

[0031] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features not direct contact but contact through the other features between them. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0032] In the description of the embodiment, the terms "on", "under", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0033] As Figure 4 The prior art brush holder 4 has a brush box 41, a handle 42 is connected to the brush box 41, and a constant pressure spring 43 is arranged at one end of the brush box 41 facing the handle 42. In order to detect the pressure of the constant pressure spring 43, as Figures 1 to 3 The utility model provides a constant pressure spring pressure test device, which comprises a fixing assembly 1 and a test assembly 2. The fixing assembly 1 is configured to fix the brush holder 4, so that the constant pressure spring 43 on the brush holder 4 can be arranged horizontally. The test assembly 2 comprises a driving member 21, the output end of the driving member 21 is provided with a carbon brush module 22, a pressure sensor 23 is arranged between the carbon brush module 22 and the output end of the driving member 21, the pressure sensor 23 can be connected to an external data processing device, the pressure sensor 23 is configured to detect the pressure received by the carbon brush module 22, and the driving member 21 can drive the carbon brush module 22 to abut against or move away from the constant pressure spring 43 fixed by the fixing assembly 1.

[0034] The brush holder 4 can be fixed by the fixing assembly 1 when testing, so that the constant pressure spring 43 faces the carbon brush module 22 horizontally, and then the carbon brush module 22 is driven by the driving member 21 to extend into the brush box 41 and abut against the constant pressure spring 43, so that the constant pressure spring 43 reacts on the carbon brush module 22, the elastic force is transmitted to the external data processing device through the pressure sensor 23 for processing and feedback, so that the constant pressure spring 43 is detected without being disassembled from the brush holder 4, the detection time and period are shortened, the detection efficiency is improved, and the constant pressure spring 43 is also avoided from being damaged in the disassembly process. Furthermore, the pressure value is read by the pressure sensor 23, the deviation of data is avoided, and the detection data is more accurate.

[0035] As shown in Figure 1 some embodiments, the constant pressure spring pressure testing device has a base 3, the fixing assembly 1 and the testing assembly 2 are arranged on the base 3, so as to provide a mounting basis for the two, a plurality of first fixing holes are arranged on the base 3, the constant pressure spring pressure testing device can be placed in a box for storage after use, the box can be provided with second fixing holes matched with the first fixing holes, the first fixing holes can be through holes, and the second fixing holes can be screw holes. The constant pressure spring pressure testing device can be fixed in the box by bolts through the first fixing holes and the second fixing holes.

[0036] As shown in Figure 2 some embodiments, the fixing assembly 1 includes a bottom plate 11 fixed on the base 3, two limiting blocks 12 are arranged on the bottom plate 11, and the two limiting blocks 12 are arranged at intervals, so as to clamp the brush box 41 between the two limiting blocks 12. In the present embodiment, the height of one limiting block 12 is higher than that of the other limiting block 12, the higher limiting block 12 abuts against the connection between the brush box 41 and the handle 42; and the lower limiting block 12 is located at the end of the brush box 41 away from the handle 42. Further, in order to facilitate positioning, a first positioning plate 13 is also installed on the bottom plate 11, the first positioning plate 13 is arranged between the two limiting blocks 12, when the brush box 41 is clamped between the two limiting blocks 12 and the side wall of the brush box 41 abuts against the first positioning plate 13, the constant pressure spring 43 is opposite to the carbon brush module 22.

[0037] In order to avoid the shaking of the brush holder 4 during testing, the brush holder 4 is further locked, as shown in Figure 2As shown, in some embodiments, the bottom plate 11 is further provided with a fixing member 14, which is configured to fix the brush holder 4 on the bottom plate 11. Specifically, the fixing member 14 includes a fixing column 141 provided on the bottom plate 11, and a limiting plate 142 provided on the fixing seat and capable of rotating relative to the fixing column 141 and being locked relative to the fixing column 141, so as to rotate the limiting plate 142 above the brush holder 4 to limit the brush holder 4 from being separated from the bottom plate 11 in the height direction. In order to reduce the height of the fixing column 141 when not in use, the fixing column 141 includes a first column 1411 fixed on the bottom plate 11 and a second column 1412, the end portions of the first column 1411 and the second column 1412 are provided with screw holes, a bolt passes through the opposite screw holes and is locked by a nut, so as to fold the first column 1411 and the second column 1412 when not in use, and unfold and lock the first column 1411 and the second column 1412 when in use; the second column 1412 is provided with a supporting step, the limiting plate 142 is sleeved on the second column 1412 and abuts against the supporting step, and the portion of the second column 1412 located on the supporting step is provided with a threaded hole, so as to be screwed on the second column 1412 by a locking nut 143 to lock the limiting plate 142 on the second column 1412.

[0038] As shown in Figure 1 and Figure 3 In some embodiments, the output end of the driving member 21 is provided with a moving plate 24, and the pressure sensor 23 is arranged on the moving plate 24, and in the present embodiment, the pressure sensors 23 are arranged in plurality at intervals in the direction perpendicular to the driving direction of the driving member 21, and each pressure sensor 23 is provided with a carbon brush model in correspondence, so as to test the plurality of constant pressure springs 43. Exemplarily, the moving plate 24 is L-shaped.

[0039] As shown in Figure 3 In some embodiments, the base 3 is provided with two guide rails 29 at intervals, the extension direction of the guide rail 29 is the same as the driving direction of the driving member 21, the moving plate 24 is slidably connected to the guide rail 29, and the output end of the driving member 21 is connected between the two guide rails 29, so as to ensure the stability of the movement of the moving plate 24, and also ensure the uniformity of the stress of the moving plate 24 and the stability of the test.

[0040] In some embodiments, the driving member 21 is a manual driving member, which comprises a first rod 211, a second rod 212 and a handle 213, the first end of the first rod 211 is hinged to the first end of the second rod 212, the second end of the first rod 211 is hinged to the moving plate 24, the second end of the second rod 212 is hinged to the base 3, and the first end of the handle 213 is fixed to the first rod 211 or the second rod 212, so that the moving plate 24 can be moved by pushing the handle 213 and through the transmission of the first rod 211 and the second rod 212, that is, it can be used immediately without the need of using power source or gas source and the like.

[0041] As shown in the drawings, Figure 3 In some embodiments, the test assembly 2 further comprises a second positioning plate 25, which is arranged below the moving plate 24, and a plurality of positioning holes 251 are arranged on the second positioning plate 25 in a spaced manner along the driving direction of the driving member 21, and a locking member 26 is inserted into the moving plate 24, and the locking member 26 can be inserted into or pulled out of the positioning hole 251, so that the moving plate 24 can be locked at different positions, and the constant pressure spring 43 can be compressed at different positions to increase the test points. In order to ensure the stability of the locking, in the present embodiment, the positioning hole 251 is a threaded hole, and the locking member 26 is a bolt. Since the second positioning plate 25 is arranged below the moving plate 24, in order to facilitate the confirmation of whether the locking member 26 is aligned with the positioning hole 251, thereby facilitating the locking, the test assembly 2 comprises a sensing plate 27, which is arranged below the moving plate 24, and a sensing groove 271 corresponding to the positioning hole 251 is arranged on the sensing plate 27, and the moving plate 24 is provided with a ball head plunger 28 corresponding to the locking member 26, when the ball head of the ball head plunger 28 is located in the sensing groove 271, the locking member 26 is opposite to the positioning hole 251, so that when the moving plate 24 is pushed, when the ball head of the ball head plunger 28 enters the sensing groove 271, a sound will be emitted, so that it can be determined that the locking member 26 is aligned with one of the positioning holes 251, and the locking member 26 can be locked. In some embodiments, the second positioning plate 25 and the sensing plate 27 can be connected to the base 3 in a detachable manner such as clamping or bolt connection, so that they can be replaced according to different needs.

[0042] The use method is briefly introduced as follows:

[0043] Place the brush holder 4 to be tested on the base plate 11 and fix it through the fixing member 14;

[0044] Push the handle 213 to move the moving plate 24 on the guide rail 29 and make the carbon brush module 22 abut against the constant pressure spring 43;

[0045] When the locking member 26 on the moving plate 24 reaches one of the positioning holes 251, lock the locking member 26;

[0046] The external data monitoring device reads the pressure value reflected by the pressure sensor 23.

[0047] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A constant pressure spring pressure testing device, characterized in that, include: Fixing component (1), which is configured to fix brush holder (4) so ​​that the constant pressure spring (43) on brush holder (4) is set horizontally; The test component (2) includes a drive unit (21), the output end of which is provided with a carbon brush module (22), and a pressure sensor (23) is provided between the carbon brush module (22) and the output end of the drive unit (21). The pressure sensor (23) can be connected to an external data processing device. The pressure sensor (23) is configured to detect the pressure on the carbon brush module (22). The drive unit (21) can drive the carbon brush module (22) to push against or move away from the constant pressure spring (43) fixed by the fixing component (1).

2. The constant pressure spring pressure testing device according to claim 1, characterized in that, The fixing component (1) includes a base plate (11) on which two limiting blocks (12) are provided. The two limiting blocks (12) can limit the brush box (41) of the brush holder (4).

3. The constant pressure spring pressure testing device according to claim 2, characterized in that, The base plate (11) is also provided with a first positioning plate (13), which is located between the two limiting blocks (12). When the brush box (41) abuts against the first positioning plate (13), the constant pressure spring (43) is opposite to the carbon brush module (22).

4. The constant pressure spring pressure testing device according to claim 2, characterized in that, A fixing member (14) is provided on the base plate (11), and the fixing member (14) is configured to fix the brush holder (4) to the base plate (11).

5. The constant pressure spring pressure testing device according to any one of claims 1-4, characterized in that, The test component (2) also includes a movable plate (24), which is disposed at the output end of the drive unit (21), the pressure sensor (23) is disposed on the movable plate (24), and the carbon brush module (22) is disposed on the pressure sensor (23).

6. The constant pressure spring pressure testing device according to claim 5, characterized in that, The test assembly (2) also includes a guide rail (29) that extends along the driving direction of the drive member (21), and the movable plate (24) slides on the guide rail (29).

7. The constant pressure spring pressure testing device according to claim 5, characterized in that, The test assembly (2) further includes a second positioning plate (25), which is disposed below the moving plate (24). The second positioning plate (25) is provided with a plurality of positioning holes (251) spaced apart along the driving direction of the driving member (21). A locking member (26) is inserted into the moving plate (24). The locking member (26) can be inserted into or pulled out of the positioning holes (251) to lock or release the moving plate (24).

8. The constant pressure spring pressure testing device according to claim 7, characterized in that, The test assembly (2) further includes a sensing plate (27), which is located below the moving plate (24). The sensing plate (27) has sensing grooves (271) that correspond one-to-one with the positioning holes (251). The second positioning plate (25) has a ball plunger (28) that corresponds to the locking member (26). When the ball head of the ball plunger (28) is located in the sensing groove (271), the locking member (26) is opposite to the positioning hole (251).

9. The constant pressure spring pressure testing device according to claim 5, characterized in that, The constant pressure spring pressure testing device also has a base (3), and the fixing component (1) and the testing component (2) are disposed on the base (3).

10. The constant pressure spring pressure testing device according to claim 9, characterized in that, The drive unit (21) includes a first rod (211), a second rod (212), and a grip (213). The first end of the first rod (211) is hinged to the first end of the second rod (212), the second end of the first rod (211) is hinged to the moving plate (24), the second end of the second rod (212) is hinged to the base (3), and the grip (213) is fixed to the first rod (211) or the second rod (212).

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