An installation casing of a slip ring current collector and the slip ring current collector

Abstract

The present invention relates to the field of slip ring electrical connectors, and specifically discloses a mounting casing and a slip ring electrical connector of a slip ring electrical connector, including a first mounting portion and a second mounting portion. A first bearing mounting cavity and a shaft seal mounting cavity are successively provided on the first mounting portion. A first channel and a temperature measurement position are provided on the first bearing mounting cavity. The second mounting portion has a coolant storage portion that communicates with the shaft seal mounting cavity. A plurality of first mounting grooves are provided on the cavity of the coolant storage portion. A bearing seat mounting cavity is provided at one end of the coolant storage portion away from the shaft seal mounting cavity. The mounting casing of the present invention has high stiffness and is convenient for installation. It is internally provided with a thermocouple channel for monitoring the temperature of the bearing and a channel for bearing lubrication, and can monitor the temperature of the slip ring rotor bearing in real time and lubricate and cool the bearing.

Description

Technical Field

[0001] The present invention relates to the field of slip ring electrical connectors, and specifically to an installation casing of a slip ring electrical connector and a slip ring electrical connector. Background Art

[0002] The installation casing of a slip ring electrical connector not only provides support and positioning for the slip ring rotor, but also is used for installing a brush wire mounting seat, etc. As Figure 11 shown, it is an existing type of slip ring electrical connector. The casing of this type of slip ring electrical connector consists of three parts, two semi-cylindrical structures 1' and a square coolant chamber structure 2'. The two semi-cylindrical structures 1' are assembled into a cylindrical structure, and the square coolant chamber structure 2' is connected to the assembled cylindrical structure to form the casing of the slip ring electrical connector. Dividing the casing of the slip ring electrical connector into three parts, the structure of each part of the casing is relatively simple, and the processing difficulty of the casing is relatively low, but the overall accuracy after assembly is not easy to guarantee.

[0003] When the casing is divided into three parts for assembly, the accuracy of the inner hole of the casing after assembly cannot be guaranteed, which easily causes the front and rear supports of the slip ring rotor to be non-concentric, resulting in the rotor running unevenly during the operation of the slip ring electrical connector, making the contact pressure between the slip ring and the brush wire change greatly dynamically. A large contact pressure easily causes large wear of the brush ring and brush wire, and the signal-to-noise ratio becomes poor. A small contact pressure easily causes the brush ring and brush wire to come off, resulting in the phenomenon that the signal appears and disappears sometimes. The casing does not have a thermocouple channel for monitoring the bearing temperature and a channel for bearing lubrication inside, and cannot monitor the temperature of the slip ring rotor bearing in real time, nor can it lubricate and cool the bearing. This type of casing structure has many connection parts, reducing the overall rigidity of the casing. The rigidity of the casing is inconsistent in different directions. It has little impact on the slip ring electrical connector with a relatively low rotational speed, but for the slip ring electrical connector with a high rotational speed, the low rigidity of the casing and the inconsistent support rigidity are likely to cause rotor vibration problems. Summary of the Invention

[0004] One aspect of the present invention aims to provide an installation casing of a slip ring electrical connector, which has high rigidity, is convenient for installation, and has a thermocouple channel for monitoring the bearing temperature and a channel for bearing lubrication inside, and can monitor the temperature of the slip ring rotor bearing in real time and lubricate and cool the bearing.

[0005] The object of the present invention can be achieved by the following technical solutions:

[0006] An installation casing of a slip ring electrical connector includes a first installation part and a second installation part. A first bearing installation cavity and a shaft seal installation cavity are successively arranged on the first installation part. A first channel and a temperature measurement position are arranged on the first bearing installation cavity. The second installation part has a coolant storage part that communicates with the shaft seal installation cavity. A plurality of first installation grooves are arranged on the cavity of the coolant storage part. A bearing seat installation cavity is arranged at one end of the coolant storage part away from the shaft seal installation cavity.

[0007] In a further embodiment, the multiple first mounting grooves are respectively used for mounting brush wire mounting seats, coolant input mounting seats and coolant output mounting seats.

[0008] In a further embodiment, the first mounting groove is a rectangular groove.

[0009] In a further embodiment, the temperature measurement position is a groove or a hole, and a second channel is provided on the first bearing mounting cavity, and the second channel is used for mounting a temperature measurement device and a signal wire.

[0010] In a further embodiment, the first channel includes an oil mist input channel for oil mist input and an oil mist output channel for oil mist output, both of which are communicated with the first bearing mounting cavity.

[0011] In a further embodiment, the oil mist output channel is arranged radially along the first bearing mounting cavity.

[0012] In a further embodiment, the first mounting portion and the second mounting portion are integrally provided.

[0013] Advantages of the present invention:

[0014] The built-in thermocouple channel for monitoring the bearing temperature and the channel for bearing lubrication enable the functions of introducing oil mist and installing a temperature measurement device.

[0015] Adopting an integral casing structure, the radial stiffness of the casing is consistent.

[0016] The electrical slip-ring cooling and sealing cavity is integrated with the electrical slip-ring rotor support, reducing the number of parts, simplifying the assembly, improving the axial centering of the rotor, and reducing the bending stress on the rotor during the assembly process.

[0017] Another object of the present invention is to provide an electrical slip-ring, which adopts the above-mentioned mounting casing with reasonable configuration. At high rotational speeds, the rotor runs smoothly, the contact pressure between the slip-ring and the brush wire is stable, the signal-to-noise ratio is high, and the signal transmission is stable.

[0018] The object of the present invention can be achieved by the following technical solutions:

[0019] An electrical slip-ring includes a slip-ring rotor, a brush wire mounting seat, a coolant input mounting seat, a coolant output mounting seat, and further includes the above-mentioned mounting casing, a temperature measurement device, a bearing housing and an oil mist input / output pipeline. The bearing housing is sealingly connected to the bearing housing mounting cavity. A second bearing mounting cavity is provided inside the bearing housing. The slip-ring rotor is respectively supported in the first bearing mounting cavity and the second bearing mounting cavity by a plurality of bearings. A shaft seal is installed in the shaft seal mounting cavity, and the shaft seal is in dynamic sealing connection with the slip-ring rotor.

[0020] In a further embodiment, the temperature measurement device is a thermocouple.

[0021] In a further solution, the bearing housing and the bearing housing installation cavity, the brush wire installation seat and the first installation groove, the coolant input installation seat and the first installation groove, and the coolant output installation seat and the first installation groove are all connected by a sealing ring.

[0022] The integrated machining of the bearing housing of the present invention has high concentric accuracy, improves the high-speed vibration characteristics of the rotor, enables the rotating speed of the slip ring rotor of the collector to reach a higher level, integrates the bearing lubrication and cooling devices, makes the rotor operate smoothly, the contact pressure between the slip ring and the brush wire is stable, and the bearing temperature is monitored in real time to ensure the safe operation of the collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a three-dimensional schematic diagram of an installation casing of a slip ring collector in an embodiment of the present invention;

[0025] Figure 2 It is a connection schematic diagram of a shaft seal in an embodiment of the present invention;

[0026] Figure 3 It is a connection schematic diagram of a second installation part in an embodiment of the present invention;

[0027] Figure 4 It is a right view schematic diagram of an installation casing of a slip ring collector in an embodiment of the present invention;

[0028] Figure 5 It is a left view schematic diagram of an installation casing of a slip ring collector in an embodiment of the present invention;

[0029] Figure 6 It is Figure 3 a partial sectional view at A-A in

[0030] Figure 7 It is Figure 3 a sectional view at B-B in

[0031] Figure 8 It is Figure 4 a sectional view at C-C in

[0032] Figure 9 It is Figure 4 a sectional view at D-D in

[0033] Figure 10 is Figure 3 Schematic cross-sectional view at E-E;

[0034] Figure 11 is a practical schematic diagram of the mounting casing of the slip ring electrical connector in the related art.

[0035] In the figure: 1, the first mounting part; 2, the second mounting part; 201, the coolant storage part; 202, the first mounting groove; 203, the bearing seat mounting cavity; 101, the first bearing mounting cavity; 102, the shaft seal mounting cavity; 3, the first channel; 31, the oil inlet channel; 32, the oil outlet channel; 4, the temperature measuring position; 5, the second mounting groove; 6, the coolant input mounting seat; 7, the coolant output mounting seat; 8, the second channel; 10, the bearing seat; 1001, the second bearing mounting cavity; 11, the shaft seal; 12, the sealing ring. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0037] As Figure 1 and Figure 7 shown, a mounting casing of a slip ring electrical connector includes a first mounting part 1 and a second mounting part 2. The first mounting part 1 is successively provided with a first bearing mounting cavity 101 and a shaft seal mounting cavity 102. A first channel 3 and a temperature measuring position 4 are provided on the first bearing mounting cavity 101. The second mounting part 2 has a coolant storage part 201 that communicates with the shaft seal mounting cavity 102. A plurality of first mounting grooves 202 are provided on the cavity of the coolant storage part 201. A bearing seat mounting cavity 203 is provided at one end of the coolant storage part 201 away from the shaft seal mounting cavity 102.

[0038] During use, referring to Figure 7 shown, the first bearing mounting cavity 101 is used to pass through the slip ring rotor, and a plurality of bearings for supporting the slip ring rotor can be installed therein according to requirements. There is a first channel 3 at the corresponding bearing mounting position. The first channel 3 is used for the input and output of oil mist to lubricate the bearings. A temperature measuring element, such as some thermocouples or sensors, is installed at the temperature measuring position 4 of the first bearing mounting cavity 101 and transmitted to a common temperature controller through a buried wire channel or a wireless signal connection. The buried wire channel can be in the form of the second channel 8 as Figure 9 shown, to detect the real-time temperature of the bearings. Brush wire mounting seats are installed on the two corresponding surfaces of the first mounting groove 202 on the coolant storage part 201, and on the other two surfaces of the first mounting groove 202, such asFigure 2 The coolant input mounting seat 6 and the coolant output mounting seat 7 shown. The shaft seal mounting cavity 102 mounts the shaft seal 11, and the bearing seat mounting cavity 203 mounts the bearing seat 10. The coolant storage part 201, together with the coolant input mounting seat 6, the coolant output mounting seat 7, two brush wire mounting seats, the bearing seat 10 and the shaft seal 11, forms a sealed cavity. Coolant is injected into the cavity to provide cooling for the slip ring brush wire friction pair located in the cavity.

[0039] The lubricating oil mist reaches the bearing part through the first channel 3. The bearing outer ring temperature monitoring point is arranged on the inner wall of the cavity at the bearing mounting part. Through signal transmission, the thermocouple signal is led out to realize real-time monitoring of the temperature of the slip ring rotor bearing. The device for signal transmission can be a test cable. In this way, while cooling the slip ring brush wire friction pair of the slip ring electrical connector, lubrication can also be provided at the support bearing position of the slip ring rotor, realizing the continuous, stable and low-noise transmission of high-speed, multi-channel rotation signals of the slip ring rotor.

[0040] According to the above working principle or usage method, some preferred embodiment structures or implementation manners are also provided, such as Figure 1 、 Figure 2 and Figure 6 shown, a plurality of the first mounting grooves 202 are respectively used for mounting the brush wire mounting seat, the coolant input mounting seat 6 and the coolant output mounting seat 7. The brush wire mounting seat can be an existing structure, and the shape of the first mounting groove 202 only needs to be adapted to the part to be mounted. For example, four first mounting grooves 202 are respectively opened on the four faces of the second mounting part 2, and the four faces are sealed with O-rings.

[0041] Such as Figure 3 shown, the first mounting groove 202 is a rectangular groove. The rectangular groove can increase the length of the coolant storage part and maximize the cooling of the brush wire.

[0042] Referring to Figure 8 、 Figure 9 shown, the temperature measuring position 4 is a groove or a hole for positioning or embedding a temperature measuring device. The first bearing mounting cavity 101 is provided with a second channel 8 for mounting the temperature measuring device and the signal wire.

[0043] Such as Figure 8 shown, the first channel 3 includes an oil inlet channel 31 for oil mist input and an oil outlet channel 32 for oil mist output, both of which are communicated with the first bearing mounting cavity 101. In this way, not only can the bearing be lubricated, but also the bearing temperature can be stabilized within its allowable range. When the bearing temperature monitored in real time through the thermistor at the temperature measuring position 4 is too high, relatively thin and low-temperature lubricating oil mist can be injected in time through the oil inlet channel to realize the circulation and replenishment of the oil mist in the first channel 3, so that the bearing works at an appropriate temperature.

[0044] The oil outlet passage 32 is arranged radially along the first bearing mounting cavity 101. The radial arrangement facilitates the outflow of the oil mist.

[0045] As Figure 1 shown, the first mounting portion 1 and the second mounting portion 2 are integrally provided. The integral provision can increase the coaxiality of the first mounting portion 1 and the second mounting portion 2 and improve their rigidity.

[0046] As Figure 1 or Figure 10 shown, four second mounting grooves 5 are provided on the outer circumferential surface of the first bearing mounting cavity 101. The first bearing mounting cavity 101 is composed of two bearing mounting holes with different diameters for mounting multiple support bearings. The small-diameter bearing mounting hole at the rear end is connected to the current collector. Bolts pass through the four second mounting grooves 5 in the large-diameter cylinder of the casing to firmly connect the connection part between the casing and the current collector.

[0047] According to the above implementation principle or usage method, it is obvious to obtain a slip ring current collector as Figure 2 , Figure 7 and Figure 8 shown, which includes a slip ring rotor, a brush wire mounting seat, a coolant input mounting seat 6, a coolant output mounting seat 7, and also includes the above-mentioned mounting casing, temperature measuring device, bearing seat 10, and oil mist input / output pipeline. The bearing seat 10 is sealingly connected to the bearing seat mounting cavity 203. A second bearing mounting cavity 1001 is provided inside the bearing seat 10. The slip ring rotor is respectively supported in the first bearing mounting cavity 101 and the second bearing mounting cavity 1001 by multiple bearings. A shaft seal 11 is installed in the shaft seal mounting cavity 102, and the shaft seal 11 is in dynamic sealing connection with the slip ring rotor.

[0048] In some embodiments, the temperature measuring device is a thermocouple.

[0049] In some embodiments, between the bearing seat 10 and the bearing seat mounting cavity 203, between the brush wire mounting seat and the first mounting groove 202, between the coolant input mounting seat 6 and the first mounting groove 202, and between the coolant output mounting seat 7 and the first mounting groove 202 are all connected by a sealing ring 12. The sealing ring 12 can be an O-ring.

[0050] The coolant storage portion 201 between the slip ring rotor and the mounting casing adopts the structural form of a lip seal. The shaft seal is composed of an external metal shell, a non-metallic sealing lip, and an internal metal cage. The external shell of the shaft seal assembly is installed into the inner hole of the main casing. The sealing lip is made of non-metallic wear-resistant plastic and directly contacts the surface of the rotating shaft to perform dynamic sealing on the slip ring rotor, ensuring that the coolant will not leak during the high-speed rotation of the rotor.

[0051] By adopting the mounting casing of the slip ring current collector of the present invention, when the slip ring current collector reaches the maximum rotational speed of 45,000 r / min, dynamic stress measurement data with a high signal-to-noise ratio and a dynamic stress noise signal less than 20 με can be obtained. The current collector works normally, the bearing temperature monitoring is normal, and the lubrication of the current collector bearing is normal, realizing the continuous, stable, and low-noise transmission of high-speed and multi-channel rotation signals.

[0052] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present application described herein. In this application, the orientation or positional relationship indicated by the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings.

[0053] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An installation casing of a slip ring current collector, comprising a first installation part (1) and a second installation part (2), characterized in that, The first mounting part (1) is successively provided with a first bearing mounting cavity (101) and a shaft seal mounting cavity (102). The first bearing mounting cavity (101) is provided with a first channel (3) and a temperature measuring position (4). The second mounting part (2) has a coolant storage part (201) communicating with the shaft seal mounting cavity (102). A plurality of first mounting grooves (202) are provided on the cavity of the coolant storage part (201). A bearing seat mounting cavity (203) is provided at one end of the coolant storage part (201) away from the shaft seal mounting cavity (102). The first mounting part (1) and the second mounting part (2) are integrally provided. The mounting casing is for the slip ring electrical connector. The slip ring electrical connector further includes a slip ring rotor, a brush wire mounting seat, a coolant input mounting seat (6), a coolant output mounting seat (7), a temperature measuring device, a bearing seat (10) and an oil mist input / output pipeline. The bearing seat (10) is sealingly connected to the bearing seat mounting cavity (203). A second bearing mounting cavity (1001) is provided inside the bearing seat (10). The slip ring rotor is respectively supported in the first bearing mounting cavity (101) and the second bearing mounting cavity (1001) by a plurality of bearings. A shaft seal (11) is installed in the shaft seal mounting cavity (102). The shaft seal (11) is in dynamic sealing connection with the slip ring rotor. The plurality of first mounting grooves (202) are respectively used for mounting the brush wire mounting seat, the coolant input mounting seat (6) and the coolant output mounting seat (7).

2. The mounting casing of a slip ring current collector according to claim 1, characterized in that, The first mounting groove (202) is a rectangular groove.

3. The mounting casing of a slip ring current collector according to claim 1, characterized in that, The temperature measuring position (4) is a groove or a hole. A second channel (8) is provided on the first bearing mounting cavity (101). The second channel (8) is used for the installation of the temperature measuring device and the signal wire.

4. The mounting casing of a slip ring current collector according to claim 1, characterized in that, The first channel (3) includes an oil mist input channel (31) for oil mist input and an oil mist output channel (32) for oil mist output. Both are communicated with the first bearing mounting cavity (101).

5. The mounting casing of a slip ring current collector according to claim 4, characterized in that, The oil mist output channel (32) is arranged radially along the first bearing mounting cavity (101).

6. A slip ring current collector, comprising a slip ring rotor, a brush wire mounting seat, a coolant input mounting seat (6), and a coolant output mounting seat (7), characterized in that, It also includes the mounting casing, the temperature measuring device, the bearing seat (10) and the oil mist input / output pipeline according to any one of claims 1-5. The bearing seat (10) is sealingly connected to the bearing seat mounting cavity (203). A second bearing mounting cavity (1001) is provided inside the bearing seat (10). The slip ring rotor is respectively supported in the first bearing mounting cavity (101) and the second bearing mounting cavity (1001) by a plurality of bearings. A shaft seal (11) is installed in the shaft seal mounting cavity (102). The shaft seal (11) is in dynamic sealing connection with the slip ring rotor.

7. A slip ring current collector according to claim 6, characterized in that, The temperature measuring device is a thermocouple.

8. The slip ring current collector according to claim 6, characterized in that, Between the bearing seat (10) and the bearing seat mounting cavity (203), between the brush wire mounting seat and the first mounting groove (202), between the coolant input mounting seat (6) and the first mounting groove (202), and between the coolant output mounting seat (7) and the first mounting groove (202), they are all connected by a sealing ring (12).

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