Fixing device for reliability test bed of box type oil distributor

Abstract

The utility model relates to a fixing device for a box-type oil distributor reliability test bench, which comprises a box-type experiment bench and an oil distributor, the oil distributor is mounted on the box-type experiment bench through a quick connector, the quick connector further comprises a horn-shaped driving frame and more than three fixing clamping blocks, and the horn-shaped driving frame is connected with the fixing clamping blocks. The trumpet-shaped driving frame is slidably installed on the periphery of the connecting coil pipe, the multiple fixing clamping blocks are vertically installed on the periphery of a limiting hole in the connecting coil pipe in a telescopic mode, and multiple inclined rods in the trumpet-shaped driving frame obliquely penetrate through the outer side ends of the multiple fixing clamping blocks in a sliding mode correspondingly; an electric push cylinder is arranged between an annular disc in the trumpet-shaped driving frame and the connecting coil pipe; according to the fixing device for the reliability test bench of the box type oil distributor, the oil distributor is aligned with the limiting hole embedded in the quick connector, so that the oil distributor and the oil distributor connecting disc in the box type test bench can be coaxially and fixedly connected, and compared with the prior art that an oil distributor flange and the oil distributor connecting disc are fixedly connected through a bolt, the fixing device is faster and more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of oil distributor performance testing technology, specifically a fixing device for a box-type oil distributor reliability test bench. Background Technology

[0002] After the production of a typical distributor is completed, samples need to be taken and tested using a box-type distributor reliability test bench for low-pressure sealing tests and environmental adaptability tests. The box-type distributor reliability test bench mainly consists of a base, frame, motor, coupling, bearing housing, cylinder assembly, distributor connecting plate, etc., and is equipped with a frequency converter and frequency converter control cabinet, which can drive the distributor shaft to rotate and adjust the speed to simulate pitch adjustment. For example, the KPZ450 distributor mainly consists of a distributor shaft, sealing sleeve, pitch indicator mechanism, internal oil pipe, feedback ring, and other parts.

[0003] When the aforementioned KPZ450 distributor is used in conjunction with a box-type distributor reliability test bench for low-pressure sealing tests and environmental adaptability tests, the flange at the head end of the distributor is fixedly connected to the distributor connecting plate in the box-type distributor reliability test bench by multiple bolts. Bolting not only requires positioning the distributor connecting plate and flange, but also passing multiple bolts through bolt holes in the distributor connecting plate and flange, and then tightening them with nuts at the bolt ends. Therefore, the fixing connection between a distributor and a box-type distributor reliability test bench is generally quite complex. In view of this, this paper aims to propose a fixing device for a box-type distributor reliability test bench. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of the complicated fixed connection between the oil distributor and the box-type oil distributor reliability test bench in the prior art, and to propose a fixing device for the box-type oil distributor reliability test bench.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fixing device for a box-type oil distributor reliability test bench includes a box-type test bench and an oil distributor. The oil distributor is installed on the box-type test bench via a quick-connect coupling. The oil distributor connecting plate in the box-type test bench and the connecting coil tube in the quick-connect coupling are coaxially and fixedly connected.

[0007] The quick connector also includes a horn-shaped drive frame and three or more fixing blocks. The horn-shaped drive frame is slidably installed on the periphery of the connecting coil. Several fixing blocks are vertically telescopically installed on the periphery of the limiting hole in the connecting coil. The limiting hole and the first flange of the distributor are fitted together. Several diagonal rods in the horn-shaped drive frame slide obliquely through the outer ends of several fixing blocks.

[0008] An electric push cylinder is provided between the annular disk and the connecting coil in the trumpet-shaped drive frame. The annular disk and the end of the electric push cylinder push rod are fixedly connected, and the electric push cylinder base and the connecting coil are fixedly connected.

[0009] Preferably, the left end of the limiting hole in the connecting coil is connected to a flared opening, and the right end of the limiting hole is connected to an oil hole.

[0010] Preferably, a first sealing ring and a second sealing ring are provided on one inner wall of the limiting hole, and the first sealing ring and the second sealing ring are coaxially arranged with the limiting hole.

[0011] Preferably, a push switch is also fixedly installed on one inner wall of the limiting hole, and the push switch and the electric push cylinder are connected in series by a wire.

[0012] Preferably, the two sides of the inclined rod are respectively connected to the rollers in a contact rolling manner, and the rollers and the fixing block are rotatably connected.

[0013] Preferably, the inner end of the fixing block is provided with a clamping slope.

[0014] Compared with the prior art, the present invention provides a fixing device for a box-type oil distributor reliability test bench, which has the following advantages:

[0015] The fixing device for the box-type distributor reliability test bench allows the distributor to be aligned with the limiting hole embedded in the quick connector, thus completing the coaxial fixed connection between the distributor and the distributor connecting plate in the box-type test bench. This is faster and more convenient than the existing technology where the distributor flange and distributor connecting plate are fixedly connected by bolts.

[0016] After the flange at the head end of the distributor is fitted into the limiting hole, the distributor will press the switch to connect the circuit in the electric push cylinder, retract the push rod in the electric push cylinder, pull the annular disk and body in the trumpet-shaped drive frame to move to the left, and the twelve inclined rods and multiple rollers in the trumpet-shaped drive frame are used to synchronously push the twelve fixed blocks to move closer and retract along the twelve telescopic guide holes, and synchronously press the clamping inclined surfaces on the inner end faces of the twelve fixed blocks onto the flange at the head end of the distributor until the flange and the limiting hole are completely fitted. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fixing device for a box-type oil distributor reliability test bench proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the quick-connect joint structure in the fixing device for the reliability test bench of the box-type oil distributor proposed in this utility model.

[0019] Figure 3This is a cross-sectional view of the oil distributor and quick-connector in a fixing device for a box-type oil distributor reliability test bench proposed in this utility model.

[0020] In the diagram: 1. Box-type experimental platform; 2. Oil dispenser; 3. Quick connector; 30. Connecting coil; 301. Trumpet mouth; 302. Limiting hole; 303. Telescopic guide hole; 304. Oil hole; 31. Trumpet-shaped drive frame; 311. Large ring; 312. Diagonal rod; 313. Small ring; 314. Connecting rod; 315. Annular disc; 32. Fixing block; 321. Circular roller; 322. Clamping inclined surface; 33. Guide rod; 34. Electric push cylinder; 35. Sealing ring one; 36. Sealing ring two; 37. Press switch. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only 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.

[0023] See attached document Figure 1-3 A fixing device for a box-type oil distributor reliability test bench includes a box-type test bench 1 and a KPZ450 type oil distributor 2. The box-type test bench 1 coaxially clamps and fixes the oil distributor 2 through a quick-connect coupling 3. The connecting coil 30 in the quick-connect coupling 3 is fixedly connected to the oil distributor connecting plate of the KPX70 box-type oil distributor reliability test bench in the prior art, that is, the connecting coil 30 in the quick-connect coupling 3 and the oil distributor connecting plate in the box-type test bench 1 are coaxially fixedly connected.

[0024] In this embodiment, as Figure 3 The connecting coil 30 has a bell mouth 301, a limiting hole 302 and an oil hole 304 arranged coaxially from left to right. The inner diameter of the limiting hole 302 is the same as the diameter of the flange at the beginning of the distributor 2. That is, the flange at the beginning of the distributor 2 and the limiting hole 302 in the connecting coil 30 are fitted together. The bell mouth 301 is mainly used to guide the flange at the beginning of the distributor 2 to gradually engage with the limiting hole 302.

[0025] In this embodiment, twelve telescopic guide holes 303 are provided around the limiting hole 302. The twelve telescopic guide holes 303 in the connecting coil 30 are vertically telescopically mounted with fixing blocks 32 through the horn-shaped drive frame 31. That is, each telescopic guide hole 303 is provided with a fixing block 32. The inner end face of the fixing block 32 is provided with a clamping slope 322. The clamping slope 322 on the inner side of the twelve fixing blocks 32 corresponds to the inner edge of the first flange of the oil distributor 2 after fixing in the limiting hole 302.

[0026] In this embodiment, the horn-shaped drive frame 31 consists of a large ring 311, twelve inclined rods 312, a small ring 313, several connecting rods 314, and an annular disk 315 from left to right. The large ring 311, the small ring 313, and the annular disk 315 are coaxially arranged. The two ends of the twelve inclined rods 312 are fixedly installed on the edges of the large ring 311 and the small ring 313, respectively. The two ends of the several connecting rods 314 are fixedly installed on the outer edges of the small ring 313 and the annular disk 315, respectively. The inner ring of the annular disk 315 is slidably installed on the periphery of the connecting coil 30. The twelve inclined rods 312 slide obliquely through the outer ends of the twelve fixed blocks 32. Each inclined rod 312 has three rollers 321 in contact with and rollingly connected on both sides. The rollers 321 and the fixed blocks 32 are rotatably connected.

[0027] In this embodiment, a guide rod 33 is fixedly installed on one side of the connecting coil 30. The guide rod 33 slides through the annular disk 315. An electric push cylinder 34 is provided between one side of the annular disk 315 and the outer wall of the connecting coil 30. The electric push cylinder 34 and the guide rod 33 are parallel to each other. The base of the electric push cylinder 34 is fixedly connected to the connecting coil 30, and the end of the push rod in the electric push cylinder 34 is fixedly connected to the annular disk 315.

[0028] In this embodiment, a push switch 37 is fixedly installed on the inner wall of the limiting hole 302 corresponding to the first flange of the distributor 2. The push switch 37 and the connected distributor 2 are parallel to each other. When the first flange of the distributor 2 is fitted into the limiting hole 302 in the connecting coil 30, the first flange of the distributor 2 will squeeze and connect the circuit in the push switch 37. The push switch 37 is connected in series with the electric push cylinder 34 through the wire. A sealing ring 1 35 and a sealing ring 2 36 are coaxially arranged on the inner wall of the limiting hole 302 where the push switch 37 is located. The sealing ring 1 35 and the sealing ring 2 36 are mainly used to increase the sealing between the inner wall of the limiting hole 302 and the first flange of the distributor 2.

[0029] The process of fixing the oil distributor 2 on the box-type test bench 1 for performance testing of the oil distributor 2 in this utility model is as follows:

[0030] Align the flange at the head of the distributor 2 with the flared end 301 in the quick-connect fitting 3, and fit the flange at the head of the distributor 2 into the limiting hole 302 along the inner wall of the flared end 301. Then, the distributor 2 presses the push switch 37 to connect the circuit in the electric push cylinder 34, retracting the push rod in the electric push cylinder 34. (Refer to...) Figure 1 After the push rod moves to the left and retracts, it pulls the annular disk 315 in the trumpet-shaped drive frame 31 to move to the left. The twelve inclined rods 312 in the trumpet-shaped drive frame 31 move to the left, and together with the round rollers 321 on both sides of the inclined rods 312, they are used to synchronously push the twelve fixed blocks 32 to move closer and retract along the twelve telescopic guide holes 303. The twelve coaxially retracted fixed blocks 32 are used to push the flange at the head end of the distributor 2 to be coaxially fixed and pressed against the inner wall of the limiting hole 302 through the clamping inclined surface 322 on the inner end face. During this process, the flange at the head end of the distributor 2 will press the sealing ring 1 35 and the sealing ring 2 36, increase the sealing between the limiting hole 302 and the above-mentioned flange, and completely fit the flange and the inner wall of the limiting hole 302.

[0031] Therefore, it can be seen that by simply aligning the distributor 2 with the limiting hole 302 embedded in the quick connector 3, the distributor 2 and the distributor connecting plate in the box-type test bench 1 can be coaxially fixedly connected. Compared with the prior art where the distributor 2 flange and the distributor connecting plate are fixedly connected by bolts, this is faster and more convenient. When the distributor 2 is removed from the quick connector 3, the push rod can be extended to the right by the electric push cylinder 34, which can move the horn-shaped drive frame 31 to the right. The twelve diagonal rods 312 that move to the right will simultaneously drive the twelve fixing blocks 32 to expand outward until the inner ends of the twelve fixing blocks 32 are disengaged from the inner wall of the limiting hole 302, and the distributor 2 can be pulled out.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixing device for a box-type oil distributor reliability test bench, comprising a box-type test bench (1) and an oil distributor (2), characterized in that: The oil distributor (2) is installed on the box-type experimental frame (1) via a quick connector (3), and the oil distributor connecting plate in the box-type experimental frame (1) and the connecting coil (30) in the quick connector (3) are coaxially and fixedly connected. The quick connector (3) also includes a horn-shaped drive frame (31) and three or more fixing blocks (32). The horn-shaped drive frame (31) is slidably installed on the periphery of the connecting coil (30). Several fixing blocks (32) are vertically telescopically installed on the periphery of the limiting hole (302) in the connecting coil (30). The limiting hole (302) and the front flange of the distributor (2) are fitted together. Several diagonal rods (312) in the horn-shaped drive frame (31) slide obliquely through the outer ends of several fixing blocks (32). An electric push cylinder (34) is provided between the annular disk (315) and the connecting coil (30) in the trumpet-shaped drive frame (31). The ends of the push rods of the annular disk (315) and the electric push cylinder (34) are fixedly connected. The base of the electric push cylinder (34) and the connecting coil (30) are fixedly connected.

2. The fixing device for the box-type oil distributor reliability test bench according to claim 1, characterized in that: The left end of the limiting hole (302) in the connecting coil (30) is connected to a flared mouth (301), and the right end of the limiting hole (302) is connected to an oil hole (304).

3. The fixing device for the reliability test bench of the box-type oil distributor according to claim 1, characterized in that: The inner wall of one side of the limiting hole (302) is provided with sealing ring one (35) and sealing ring two (36), and the sealing ring one (35), sealing ring two (36) and the limiting hole (302) are coaxially arranged.

4. The fixing device for the reliability test bench of the box-type oil distributor according to claim 1, characterized in that: A push switch (37) is also fixedly installed on one side of the inner wall of the limiting hole (302), and the push switch (37) and the electric push cylinder (34) are connected in series by a wire.

5. The fixing device for the box-type oil distributor reliability test bench according to claim 1, characterized in that: The two sides of the inclined rod (312) are respectively connected to the rollers (321) in a rolling contact manner, and the rollers (321) and the fixing block (32) are rotatably connected.

6. The fixing device for the reliability test bench of the box-type oil distributor according to claim 1, characterized in that: The inner end of the fixing block (32) is provided with a clamping slope (322).

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