A fixture structure for a carbon brush friction test bench

Abstract

This utility model discloses a carbon brush friction test bench fixture structure, including a clamping seat for clamping carbon brushes and a fixing seat. The fixing seat includes a base plate and two side plates fixed to the upper side of the base plate. Each of the two side plates has a first through hole, and the clamping seat has a second through hole. The clamping seat is inserted between the two side plates. A clamping nut is screwed onto the threaded end of a clamping bolt after passing through the first and second through holes. The clamping seat of this utility model is rotatably and adjustablely mounted on the fixing seat via the clamping bolt, allowing for convenient adjustment of the carbon brush angle. Once the angle is adjusted, the clamping bolt is tightened, thereby fixing the clamping seat and the fixing seat.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush friction testing technology, and in particular to a carbon brush friction test bench fixture structure. Background Technology

[0002] To understand the technical performance of carbon brushes made of different materials and from different manufacturers, performance tests are required on various carbon brushes. During these tests, the carbon brushes need to be mounted onto the test bench using a clamp. For example, Chinese patent document CN114895159A, published on August 12, 2022, discloses a device and method for simulating discharge at the interface gap between a carbon brush and a slip ring in a hydro-generator. This method discloses a scheme for clamping the carbon brush on a carbon brush clamp for testing. Its advantages are: the carbon brush clamp has a simple structure and the carbon brush is easy to install. However, its disadvantage is that in actual use, the centerline of the carbon brush does not coincide with the radius of the slip ring; rather, the centerline of the carbon brush and the radius of the slip ring have a certain angle. Using the carbon brush clamp in this scheme makes it inconvenient to adjust the angle of the carbon brush. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the problems existing in the background art and provide a carbon brush friction test bench fixture structure that can easily adjust the angle of the carbon brush.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A carbon brush friction test bench fixture structure includes a clamping seat for clamping carbon brushes, and a fixing seat. The fixing seat includes a base plate and two side plates fixed to the upper side of the base plate. The two side plates are respectively provided with a first through hole, and the clamping seat is provided with a second through hole. The clamping seat is inserted between the two side plates, and the threaded end of the clamping bolt passes through the first through hole and the second through hole and is screwed on with a clamping nut.

[0005] The clamping seat has a block structure, and a placement groove is provided at the top of the clamping seat. A clamping screw is installed on at least one side of the clamping seat located in the placement groove, and a wire through hole is provided on the side of the clamping seat located in the placement groove.

[0006] The clamping seat is equipped with clamping screws on all four sides of the placement slot.

[0007] The clamping screw is located at one end of a clamping plate installed in the placement slot.

[0008] The clamping plate has a concave center on one side and a convex center on the other side, with the convex side facing the clamping screw. The limiting screw is inserted from the concave side of the clamping plate and screwed into the threaded hole at the end of the clamping screw. The gap L between the head of the limiting screw and the clamping screw is greater than the thickness of the clamping plate so that the clamping plate can rotate on the limiting screw.

[0009] The top of the clamping seat has a slot on the outside of the placement groove. A square nut is installed in the slot. The clamping seat has through holes on both sides of the square nut. The clamping screw is inserted into the through hole and screwed into the square nut.

[0010] An adjustment mechanism is installed on the fixed base, and the adjustment mechanism is connected to the clamping base to adjust the angle of the clamping base.

[0011] The adjustment mechanism is a worm gear rotatably mounted on the connecting plates on both sides of the fixed base. One end of the worm gear extends out of the connecting plate and is fixedly mounted with a handle. The bottom of the clamping base is an arc surface with multiple tooth grooves. The worm gear meshes with the tooth grooves.

[0012] The two connecting plates are respectively mounted on both ends of the two side plates by screws.

[0013] At least one side plate is provided with an observation hole, and an indicator mark is provided on the outside of the observation hole. An angle scale line is provided on the side of the clamping seat corresponding to the observation hole.

[0014] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0015] 1. The fixing base of this utility model is used to install and fix on the friction test bench, and the holder is used to clamp the carbon brush. The holder is rotatably and adjustablely installed on the fixing base by means of the clamping bolt, which can easily adjust the angle of the carbon brush. After the angle is adjusted, the clamping bolt is tightened to fix the holder and the fixing base.

[0016] 2. The fixed base of this utility model is equipped with an adjustment mechanism, which is connected to the clamping base to adjust the angle of the clamping base.

[0017] 3. This utility model has an observation hole on at least one side plate, an indicator mark on the outside of the observation hole, and an angle scale line on the side of the clamping base corresponding to the observation hole. The angle scale line aligned with the indicator mark indicates the deflection angle of the clamping base, thus facilitating observation of the angle of the clamping base's swing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the fixing base of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the clamping base of this utility model.

[0022] Figure 4 This is a three-dimensional structural diagram of the clamping base of this utility model from the bottom view.

[0023] Figure 5 This is a three-dimensional structural diagram of the worm gear of this utility model.

[0024] Figure 6 This is a three-dimensional structural diagram of the clamping screw of this utility model.

[0025] Figure 7 This is a cross-sectional structural diagram of the clamping screw of this utility model.

[0026] Figure 8 This is a three-dimensional structural diagram of the square nut of this utility model.

[0027] Figure 9 This is a front view schematic diagram of the structure of the present invention when holding a carbon brush.

[0028] Figure 10 This is a three-dimensional structural diagram of the present invention when holding a carbon brush.

[0029] Figure 11 This is a three-dimensional structural diagram of the present invention after adjusting the angle of the carbon brush when holding it.

[0030] Figure label:

[0031] Fixed base 10, base plate 11, mounting hole 111, side plate 12, first through hole 121, connecting plate 13, support hole 131, observation hole 14, indicator mark 141;

[0032] Clamping base 20, placement groove 21, through hole 211, slot 212, clamping screw 22, clamping plate 221, limiting screw 222, second through hole 23, wire through hole 24, angle scale line 25, square nut 26, toothed groove 27.

[0033] Clamping bolt 30, clamping nut 31;

[0034] Worm gear 40, handle 41;

[0035] Carbon brush 50. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0038] Example 1:

[0039] See Figure 1-11 A carbon brush friction test bench fixture structure includes a clamping seat 20 for clamping a carbon brush 50, and a fixing seat 10. The fixing seat 10 includes a base plate 11 and two side plates 12 fixed to the upper side of the base plate 11. Each of the two side plates 12 has a first through hole 121, and the clamping seat 20 has a second through hole 23. The clamping seat 20 is inserted between the two side plates 12. A clamping nut 31 is screwed onto the threaded end of a clamping bolt 30 after passing through the first through hole 121 and the second through hole 23. The fixing seat 10 is used to install and fix the carbon brush 50 on the friction test bench. The clamping seat 20 is rotatably and adjustablely mounted on the fixing seat 10 via the clamping bolt 30, allowing for easy adjustment of the carbon brush angle. Once the angle is adjusted, the clamping bolt 30 is tightened, thereby fixing the clamping seat 20 to the fixing seat 10.

[0040] In this embodiment, when the angle needs to be adjusted, the clamping bolt 30 is first loosened so that the clamping seat 20 can swing, thereby adjusting the angle of the clamping seat 20. After the angle is adjusted, the clamping bolt 30 is tightened.

[0041] In this embodiment, see Figure 1 , 2 The base plate 11 has four mounting holes 111, and the fixing seat 10 is mounted on the friction test bench by bolts through the mounting holes 111.

[0042] Besides adopting the carbon brush clamp architecture in CN114895159A, the clamping base 20 can also adopt other structures. For example, in this embodiment, see... Figure 1 , 3The clamping seat 20 has a block structure. The top of the clamping seat 20 is provided with a placement groove 21. The clamping seat 20 is equipped with a clamping screw 22 on at least one side of the placement groove 21. The clamping seat 20 is provided with a wire through hole 24 on one side of the placement groove 21.

[0043] When using, please refer to Figure 10 One end of the carbon brush 50 is installed in the placement groove 21 and fixed by the clamping screw 22. The wire of the carbon brush 50 passes through the wire exit hole 24.

[0044] Specifically, see Figure 1 The clamping seat 20 is located on all four sides of the placement slot 21 and is equipped with clamping screws 22.

[0045] See Figure 6 A clamping plate 221 is installed at one end of the clamping screw 22 located in the placement groove 21, which increases the contact area between the clamping screw 22 and the carbon brush 50 and improves stability.

[0046] In this embodiment, see Figure 6 , 7 The clamping plate 221 has a concave center on one side and a convex center on the other side, with the convex side facing the clamping screw 22. The limiting screw 222 passes through the concave side of the clamping plate 221 and is screwed into the threaded hole at the end of the clamping screw 22. The gap L between the head of the limiting screw 222 and the clamping screw 22 is greater than the thickness of the clamping plate 221, so that the clamping plate 221 can rotate on the limiting screw 222. Thus, when the clamping screw 22 is tightened, the clamping plate 221 abuts against the carbon brush 50, and the clamping screw 22 abuts against the clamping plate 221. When the clamping screw 22 rotates, the clamping plate 221 will not rotate.

[0047] The clamping screw 22 can be directly screwed onto the clamping seat 20. Specifically, the clamping seat 20 has threaded holes on its four sides located in the placement groove 21, and the clamping screw 22 is screwed onto the threaded holes on the clamping seat 20.

[0048] In this embodiment, because the clamping seat 20 is made of insulating material, such as engineering plastic or nylon, directly machining threaded holes on the clamping seat 20 can easily damage and strip the threads after a period of use. Therefore, see... Figure 1 , 3 8. The top of the clamping seat 20 is provided with a slot 212 on the outside of the placement groove 21. A square nut 26 is installed in the slot 212. The clamping seat 20 is provided with through holes 211 on both sides of the square nut 26. The clamping screw 22 is inserted into the through hole 211 and screwed into the square nut 26.

[0049] Example 2:

[0050] Based on Example 1, see Figure 1 , 9 10, 11. An adjustment mechanism is installed on the fixed base 10. The adjustment mechanism is connected to the clamping base 20 to adjust the angle of the clamping base 20.

[0051] In this embodiment, see Figure 1 , 4 5. The adjustment mechanism is a worm gear 40 rotatably mounted on the connecting plates 13 on both sides of the fixed base 10. One end of the worm gear 40 extends out of the connecting plate 13 and is fixedly mounted with a handle 41. The bottom of the clamping base 20 is an arc surface with multiple tooth grooves 27. The worm gear 40 meshes with the tooth grooves 27. By rotating the handle 41, the worm gear 40 is driven to rotate. Due to the meshing of the worm gear 40 with the tooth grooves 27, the clamping base 20 rotates around the clamping bolt 30 using the worm gear transmission structure.

[0052] In this embodiment, see Figure 3 , 4 The center of the second through hole 23 is the center of the bottom arc surface of the clamping seat 20.

[0053] See Figure 2 Two connecting plates 13 are respectively installed at both ends of the two side plates 12 by screws. The connecting plates 13 are provided with support holes 131. The two ends of the worm gear 40 are respectively rotatably installed on the support holes 131 of the two connecting plates 13.

[0054] Example 3:

[0055] Based on Embodiment 1 or Embodiment 2, to facilitate observation of the swing angle of the clamping seat 20, see [link to Embodiment 1]. Figure 2 , 3 9. An observation hole 14 is provided on at least one side plate 12. An indicator mark 141 is provided on the outside of the observation hole 14. An angle scale line 25 is provided on the side of the clamping seat 20 corresponding to the observation hole 14. The angle scale line 25 aligned with the indicator mark 141 is the deflection angle of the clamping seat 20.

[0056] Specifically, the angle scale 25 is similar to the scale on a protractor, with the corresponding angle value engraved at the end of each scale line, making it easy to read the angle data.

[0057] The working principle or working process of this utility model:

[0058] During installation, the mounting base 10 is installed on the friction test bench by bolts through the mounting holes 111.

[0059] One end of the carbon brush 50 is installed in the placement groove 21 and fixed by the clamping screw 22. The wire of the carbon brush 50 passes through the wire exit hole 24.

[0060] When angle adjustment is needed, first loosen the clamping bolt 30, then rotate the handle 41 to drive the worm gear 40 to rotate. Since the worm gear 40 meshes with the toothed groove 27, the worm gear transmission structure causes the clamping seat 20 to rotate a certain angle around the clamping bolt 30. The angle scale line 25 can be observed through the observation hole 14. For example, when the indicator mark 141 aligns with the 5 on the angle scale line 25, it indicates that the clamping seat 20 has deflected by 5°. Figure 11 As shown. After adjusting the angle, tighten the clamping bolt 30.

[0061] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A carbon brush friction test rig fixture structure comprising a clamping seat (20) for clamping a carbon brush (50), characterized in that: It also includes a fixing seat (10), which includes a base plate (11) and two side plates (12) fixed to the upper side of the base plate (11). The two side plates (12) are respectively provided with a first through hole (121), and the clamping seat (20) is provided with a second through hole (23). The clamping seat (20) is inserted between the two side plates (12). The threaded end of the clamping bolt (30) passes through the first through hole (121) and the second through hole (23) and is screwed with a clamping nut (31).

2. The fixture structure for a carbon brush friction test bench according to claim 1, characterized in that: The clamping seat (20) has a block structure. The top of the clamping seat (20) is provided with a placement groove (21). The clamping seat (20) is equipped with a clamping screw (22) on at least one side of the placement groove (21). The clamping seat (20) is provided with a wire through hole (24) on one side of the placement groove (21).

3. The fixture structure for a carbon brush friction test bench according to claim 2, characterized in that: The clamping seat (20) is equipped with clamping screws (22) on all four sides of the placement groove (21).

4. The fixture structure for a carbon brush friction test bench according to claim 2, characterized in that: The clamping screw (22) is fitted with a clamping plate (221) at one end located in the placement groove (21).

5. The carbon brush friction test bench fixture structure according to claim 4, characterized in that: The clamping plate (221) has a concave center on one side and a convex center on the other side, with the convex side facing the clamping screw (22). The limiting screw (222) is inserted from the concave side of the clamping plate (221) and screwed into the threaded hole at the end of the clamping screw (22). The gap L between the head of the limiting screw (222) and the clamping screw (22) is greater than the thickness of the clamping plate (221) so that the clamping plate (221) can rotate on the limiting screw (222).

6. The carbon brush friction test bench fixture structure according to claim 5, characterized in that: The top of the clamping seat (20) is provided with a slot (212) on the outside of the placement groove (21). A square nut (26) is installed in the slot (212). The clamping seat (20) is provided with through holes (211) on both sides of the square nut (26). The clamping screw (22) is inserted into the through hole (211) and screwed into the square nut (26) with a threaded engagement.

7. The fixture structure for a carbon brush friction test bench according to claim 1, characterized in that: An adjustment mechanism is installed on the fixed base (10), which is connected to the clamping base (20) to adjust the angle of the clamping base (20).

8. The fixture structure for a carbon brush friction test bench according to claim 7, characterized in that: The adjustment mechanism is a worm (40) rotatably mounted on the connecting plates (13) on both sides of the fixed seat (10). One end of the worm (40) extends out of the connecting plate (13) and a handle (41) is fixedly installed thereon. The bottom of the clamping seat (20) is an arc surface, and multiple tooth grooves (27) are provided on the arc surface. The worm (40) meshes with the tooth grooves (27).

9. The fixture structure for a carbon brush friction test bench according to claim 8, characterized in that: The two connecting plates (13) are respectively installed at both ends of the two side plates (12) by screws.

10. A carbon brush friction test bench fixture structure according to any one of claims 1 to 9, characterized in that: An observation hole (14) is provided on at least one side plate (12), and an indicator mark (141) is provided on the outside of the observation hole (14). An angle scale line (25) is provided on the side of the clamping seat (20) corresponding to the observation hole (14).

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