Dynamic rotation pressure maintaining test bench for center swivel joint

Abstract

A dynamic rotation pressure maintaining test bench for a center swivel joint comprises a test bench body, a supporting part is arranged at the bottom of the test bench body and is a supporting table, an assembling position is arranged on the supporting table, the test bench body is placed on the assembling position, and the test bench body can be assembled on the supporting table by means of mutual matching of the test bench body and the supporting table. The bottom of the test bench can be supported, operation of the test bench can be more stable, a fixing station is arranged on the test bench, the two sides of the center rotary joint can be well supported and positioned through the fixing station, and the subsequent pressure maintaining test process of the center rotary joint can be more stable and safer. When a further test needs to be carried out, the central rotary joint can be internally inflated by using the inflation tank, so that the pressure maintaining and testing of the central rotary joint can be more convenient.

Description

Technical Field

[0001] The utility model relates to a rotary joint pressure detection device, in particular to a dynamic rotation pressure maintaining test bench for a central rotary joint. Background Art

[0002] The center swivel joint is widely used in construction machinery such as excavators, cranes, graders, and rotary drills. It is a movable joint that integrates multiple oil circuits. This movable joint has a shell part and a core shaft part installed in the shell. Each oil circuit is provided with an annular oil channel on the inner hole side of the shell part or on the outer surface of the core shaft part at the joint of the shell part and the core shaft part. In the process of preparing the center swivel joint, it is necessary to perform a pressure test on the center swivel joint. During the pressure test, a pressure holding test bench needs to be used, which can make the pressure test of the center swivel joint more convenient.

[0003] In the prior art: CN201020248185.5, a center rotary joint durability test device, is a center rotary joint durability test device belonging to an engineering machinery parts test device. The durability test device has a motor connected to a hydraulic pump, the output end of the hydraulic pump is connected to the oil cylinder through a safety valve, the hydraulic pump is connected to the radial pressurizing cylinder through a pressure reducing valve and a two-position two-way electromagnetic reversing valve, the hydraulic pump is also connected to the rod end of the hydraulic cylinder through a three-position four-way electromagnetic reversing valve and a first throttle valve, the rodless end of the hydraulic cylinder is connected to the oil tank through a three-position four-way electromagnetic reversing valve, the piston rod of the hydraulic cylinder is connected to a center rotary joint test fixture, and stroke detection switches are provided at both ends of the center rotary joint test fixture. The center rotary joint is provided on the center rotary joint test fixture, and the center rotary joint stator and sleeve automatically rotate back and forth in both directions.

[0004] In the existing technology, the radial pressure cylinder can load lateral force on the center rotary joint and the lateral force can be adjusted, which is the same as the actual working condition of the center rotary joint. However, the test device in the existing technology cannot fix the bottom of the center rotary joint, and the pressure holding test of the center rotary joint is not safe enough. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a dynamic rotation and pressure-maintaining test bench for a central rotary joint.

[0006] The utility model is implemented by the following technical scheme: a dynamic rotation and pressure-maintaining test bench for a central rotary joint includes a test bench, a supporting component is provided at the bottom of the test bench, the supporting component is a supporting platform, an assembly position is provided on the support platform, the test bench is placed at the assembly position, a locking bolt is provided on the assembly position, the test bench and the supporting platform are fixed by means of a locking bolt, a fixing component is provided on the test bench, the fixing component is a fixed workstation, side platforms are provided on both sides of the fixed workstation, a hydraulic cylinder is provided on the side platform, a hydraulic guide rod is provided on the hydraulic cylinder, and a support plate is provided on the hydraulic guide rod.

[0007] A filling groove is provided inside the support plate, a rubber gasket is provided in the filling groove, and the rubber gasket is fixed in the filling groove by means of screws.

[0008] The test bench is provided with a top bracket, and the top bracket is provided with a pressure test component, and the pressure test component is an air filling tank.

[0009] The inflatable tank is provided with a delivery pipeline, which is a flexible rubber tube, and a connector is provided on the flexible rubber tube.

[0010] The connector adopts a threaded head, the connector and the central rotary joint are threadedly assembled, and the flexible rubber tube conveys the pressurized gas into the central rotary joint.

[0011] Compared with the prior art, the present invention can rely on the mutual cooperation between the test bench and the support platform to provide support for the bottom of the test bench when in use, so that the operation of the test bench can be more stable. A fixed workstation is provided on the test bench, and the fixed workstation can be used to well support and position the two sides of the center rotary joint, so that the subsequent pressure-maintaining test process of the center rotary joint can be more stable and safe. When further tests are needed, the center rotary joint can be inflated with an air tank, which makes the pressure-maintaining test of the center rotary joint more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the utility model;

[0015] In the figure: 1 is a test bench, 2 is a support table, 3 is an assembly position, 4 is a locking bolt, 5 is a fixed position, 6 is a side table, 7 is a hydraulic cylinder, 8 is a hydraulic guide rod, 9 is a support plate, 10 is a rubber gasket, 11 is a top bracket, 12 is an air tank, 13 is a flexible rubber tube, 14 is a connector, 15 is a sealing test component, 16 is a center swivel joint, and 17 is an interface. DETAILED DESCRIPTION

[0016] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0017] The dynamic rotation and pressure-maintaining test bench for the central rotary joint includes a test bench 1. A supporting component is provided at the bottom of the test bench 1, and the supporting component is a supporting platform 2. An assembly position is provided on the support platform 2. The test bench is placed on the assembly position 3, and a locking bolt 4 is provided on the assembly position 3. The test bench 1 and the support platform 2 are fixed by means of the locking bolt 4. A fixing component is provided on the test bench 1, and the fixing component is a fixing station 5. Side platforms 6 are provided on both sides of the fixing station 5. A hydraulic cylinder 7 is provided on the side platform 6, a hydraulic guide rod 8 is provided on the hydraulic cylinder 7, and a support plate 9 is provided on the hydraulic guide rod 8.

[0018] When further testing of the center rotary joint is required, the center rotary joint can be placed on the test bench 1, and then the fixed station 5 can be used to clamp the center rotary joint on both sides. This allows the center rotary joint to be more firmly fixed on the test bench 1, facilitating subsequent pressure holding tests. A filling groove is provided inside the support plate 9, and a rubber gasket 10 is provided in the filling groove. The rubber gasket 10 is fixed in the filling groove by screws.

[0019] In order to carry out the pressure holding test of the center rotary joint, a blocking test component 15 can be provided on both sides of the center rotary joint. The blocking test component 15 can be used to block the air outlet of the center rotary joint 16, which can facilitate the subsequent pressure holding test. An interface 17 is provided on the blocking test component 15, and the interface 17 is used to conveniently connect with the air tank 12, so as to facilitate the input of the pressure air source into the center rotary joint 16. A top bracket 11 is provided on the test bench 1, and a pressure test component is provided on the top bracket 11, and the pressure test component is the air tank 12.

[0020] The gas can be input into the center rotary joint 16 using an air filling tank, and then a sealing test component 15 is provided on the center rotary joint 16. The sealing test component 15 blocks the problem of gas outlet of the center rotary joint 16, which can facilitate the pressure maintenance test of the center rotary joint 16. A delivery pipe is provided on the air filling tank 12, and the delivery pipe is a flexible rubber tube 13. A connector 14 is provided on the flexible rubber tube 13, and the connector 14 adopts a threaded head. The connector 14 and the center rotary joint 16 are threadedly assembled, and the flexible rubber tube 13 delivers pressurized gas into the center rotary joint 15. The connector on the flexible rubber tube and the interface 17 on the sealing test component 15 on the center rotary joint are assembled between the two. The pressure maintaining gas can be input into the center rotary joint 16 by relying on the air filling tank 12, which can facilitate the center rotary joint 16 to see if there is a pressure relief problem. The pressure value fluctuation inside the center rotary joint 16 can be observed through the pressure gauge, so that the sealing and internal pressure test effect of the center rotary joint 16 can be known.

[0021] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A dynamic rotation and pressure-maintaining test bench for a central rotary joint, comprising a test bench, a support component provided at the bottom of the test bench, the support component being a support platform, an assembly position provided on the support platform, the test bench being placed at the assembly position, a locking bolt provided at the assembly position, the test bench and the support platform being fixed by the locking bolt, a fixing component provided on the test bench, and characterized in that: The fixed component is a fixed workstation, side platforms are provided on both sides of the fixed workstation, a hydraulic cylinder is provided on the side platforms, a hydraulic guide rod is provided on the hydraulic cylinder, and a support plate is provided on the hydraulic guide rod.

2. The dynamic rotation and pressure-maintaining test bench for the central rotary joint according to claim 1 is characterized in that: A filling groove is provided inside the support plate, a rubber gasket is provided in the filling groove, and the rubber gasket is fixed in the filling groove by means of screws.

3. The dynamic rotation and pressure-maintaining test bench for the central rotary joint according to claim 1 is characterized in that: The test bench is provided with a top bracket, and the top bracket is provided with a pressure test component, and the pressure test component is an air filling tank.

4. The dynamic rotation and pressure-maintaining test bench for the central rotary joint according to claim 3 is characterized in that: The inflatable tank is provided with a delivery pipeline, which is a flexible rubber tube, and a connector is provided on the flexible rubber tube.

5. The dynamic rotation and pressure-maintaining test bench for the central rotary joint according to claim 4 is characterized in that: The connector adopts a threaded head, the connector and the central rotary joint are threadedly assembled, and the flexible rubber tube conveys the pressurized gas into the central rotary joint.

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