Tool for detecting rotation resistance of rotary joint

Abstract

The utility model relates to the technical field of rotary joint detection, and discloses a rotary joint rotation resistance detection tool, which comprises a bottom plate and a connecting plate fixed with the bottom plate in parallel, a base is arranged on the bottom plate, a torsion sensor assembly is fixedly arranged in the base, and a display screen for displaying a torsion value is arranged on the side surface of the base; a turntable is arranged on the top surface of the base, the lower end of the turntable is rotationally connected with the base through a connecting shaft, the lower end of the connecting shaft is connected with a torsion sensor, and a lower positioning piece for positioning a rotary joint shell is arranged on the turntable; a motor is fixedly arranged on the connecting plate, a telescopic transmission assembly is arranged at the shaft end of the motor, and an upper positioning piece used for being connected with a rotating body is fixedly arranged at the lower end of the transmission assembly. The device can quickly position the rotary joint and detect the resistance of the rotary joint, and is very convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joint detection, in particular to a rotary joint rotation resistance detection tool. Background Art

[0002] A rotary joint is a connecting sealing device that transports a fluid medium from a stationary pipeline to a rotating or reciprocating device, thereby providing a heating or cooling medium for the rotating mechanism. Multiple sealing rings are set between the shell of the rotary joint and the internal rotating body. In order to ensure the sealing performance, the sealing rings are usually compressed through the end caps. In theory, the tighter the sealing rings, the better the sealing effect. However, the tighter the sealing rings are pressed, the greater the rotational resistance. Excessive rotational resistance will cause a load on the external rotating pipeline, thereby affecting the overall stability. At the same time, if the sealing rings are pressed too tightly, the sealing rings will continue to be subjected to high pressure during use, which will affect the service life of the sealing rings. Therefore, the rotational resistance needs to be tested after the rotary joint is assembled. At present, there is no tooling specifically for detecting the resistance of rotary joints. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a rotary joint rotation resistance detection tool which is easy to use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A rotary joint rotation resistance detection tool comprises a bottom plate and a connecting plate fixed parallel to the bottom plate, the bottom plate is provided with a base, a torque sensor assembly is fixed in the base, and a display screen for displaying torque value is provided on the side of the base;

[0006] A turntable is provided on the top surface of the base, the lower end of the turntable is rotatably connected to the base via a connecting shaft, the lower end of the connecting shaft is connected to the torque sensor, and a lower positioning member for positioning the rotary joint housing is provided on the turntable;

[0007] A motor is fixedly arranged on the connecting plate, a retractable transmission assembly is arranged at the shaft end of the motor, and an upper positioning member for connecting with the rotating body is fixedly arranged at the lower end of the transmission assembly;

[0008] When the motor drives the rotating body to rotate at a constant speed, the torque value displayed on the display screen is the rotation resistance value of the rotary joint.

[0009] The shell of the rotary joint is connected and positioned with the lower positioning piece, and the rotating body of the rotary joint is connected with the upper positioning piece. The motor drives the rotating body of the rotary joint to rotate at a constant speed through the transmission assembly. When rotating at a constant speed, the rotational resistance of the rotary joint is equal to the detection value of the torque sensor assembly. Therefore, the torque value displayed on the display screen is the rotational resistance of the rotary joint.

[0010] Preferably, an upper bearing seat is provided on the top surface of the base, a thrust bearing is provided in the upper bearing seat, a lower bearing seat is provided in the base, a ball bearing is provided in the lower bearing seat, and the connecting shaft passes through the thrust bearing and the ball bearing and is connected to the torque sensor assembly.

[0011] Preferably, a rectangular socket is provided on the top surface of the torque sensor assembly, and a rectangular plug which is plugged into the rectangular socket is provided on the lower end of the connecting shaft.

[0012] Preferably, the lower positioning member includes a three-jaw chuck and a chuck seat fixed to the bottom of the three-jaw chuck, a plurality of notches are evenly arranged on the edge of the turntable, and a plurality of protrusions engaged with the notches are arranged at the bottom of the chuck seat.

[0013] Preferably, a chamfer is provided at the lower edge of the protrusion.

[0014] Preferably, the transmission assembly comprises a shaft sleeve and a transmission shaft slidably arranged in the shaft sleeve, the upper end of the shaft sleeve is fixedly connected to the shaft end of the motor, and the lower end of the rotating shaft extends out of the shaft sleeve and is fixedly connected to the upper positioning member;

[0015] A vertical slot hole is arranged on the side surface of the shaft sleeve, and a pin shaft which is slidably connected with the vertical slot hole is fixed on the transmission shaft.

[0016] Preferably, the upper positioning member is configured as a drill clamp.

[0017] Therefore, the utility model can quickly position the rotary joint and detect the resistance of the rotary joint, and is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 for Figure 1 Axonometric drawing of .

[0020] Figure 3 for Figure 2 A partial schematic diagram of .

[0021] Figure 4 It is a partial exploded view of the utility model.

[0022] Figure 5 It is a schematic diagram of the coordination between the chuck seat and the turntable. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the scope of protection of the present invention.

[0024] It should be understood that, in this document, the expressions "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor should they be understood as implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly indicate that at least one of the features is included.

[0025] like Figure 1-Figure 5 The rotary joint rotation resistance detection tool shown in the figure includes a base plate 1, a connecting plate 2 fixed parallel to the base plate, the connecting plate is fixed to the base through a column 3, a base 4 is provided on the base plate 1, a torque sensor assembly 5 is fixed in the base 4, and a display screen 6 for displaying the torque value is provided on the side of the base 4; a turntable 7 is provided on the top surface of the base, and the lower end of the turntable 7 is rotatably connected to the base through a connecting shaft 8. Specifically, an upper bearing seat 40 is provided on the top surface of the base 4, a thrust bearing 41 is provided in the upper bearing seat 100, a lower bearing seat is provided in the base, a ball bearing 42 is provided in the lower bearing seat, and the connecting shaft 8 is connected to the torque sensor assembly after passing through the thrust bearing and the ball bearing; a rectangular plug 50 is provided on the top surface of the torque sensor assembly 5, and a rectangular plug 80 plugged into the rectangular plug is provided at the lower end of the connecting shaft 8. The torque sensor assembly in this embodiment is directly obtained through procurement.

[0026] The turntable 7 is provided with a lower positioning member 9 for positioning the rotary joint housing. The lower positioning member 9 includes a three-jaw chuck 90 and a chuck seat 91 fixed to the bottom of the three-jaw chuck. A plurality of notched grooves 70 are evenly arranged at the edge of the turntable 7. The bottom of the chuck seat 91 is provided with a plurality of protrusions 910 engaged with the notched grooves. The lower edge of the protrusion is provided with an oblique chamfer 911. In this embodiment, four notched grooves are provided, and four protrusions are provided. The four protrusions are respectively engaged with the four notched grooves, so that the chuck seat and the turntable are circumferentially limited, and at the same time, the disassembly of the lower positioning member is facilitated; the three-jaw chuck adopts a pneumatic chuck.

[0027] The connecting plate 2 is fixed with a motor 10, and the shaft end of the motor is provided with a retractable transmission assembly 11, and the lower end of the transmission assembly is fixed with an upper positioning member 12 for connecting with the rotating body. The motor in this embodiment adopts a reduction motor; the transmission assembly 11 includes a sleeve 110, a transmission shaft 111 slidably arranged in the sleeve, the upper end of the sleeve 110 is fixedly connected with the shaft end of the motor 10, the lower end of the rotating shaft 111 extends out of the sleeve and is fixedly connected with the upper positioning member 12, and the upper positioning member is configured as a drill clamp; the side of the sleeve 110 is provided with a vertical slot hole 1100, and the transmission shaft 111 is fixedly provided with a pin shaft 1110 slidably connected with the vertical slot hole. The transmission shaft can be retracted in the sleeve, and at the same time, it can realize circumferential limit, which is convenient for stable transmission of motor power.

[0028] In conjunction with the accompanying drawings, the principle of the utility model is as follows: Figure 1 and Figure 3 As shown, first

[0029] Manually raise the upper positioning piece so that the transmission shaft is retracted into the sleeve, thereby facilitating the connection and positioning of the housing 130 of the rotary joint 13 with the three-jaw chuck. Then, lower the upper positioning piece (drill clamp) to the rotating body 131 of the rotary joint. The drill clamp clamps the rotating body of the rotary joint and turns on the motor, which drives the rotating body to rotate at a constant speed. At this time, the output torque of the motor and the rotational resistance of the rotary joint are equal to the detection value of the torque sensor assembly. The torque value displayed on the display is the rotational resistance value of the rotary joint.

[0030] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by up, down, left, right, inner end, outer end, one end, the other end, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of more clearly describing the technical solution of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific orientation, and cannot be understood as a limitation of the present invention.

[0031] Although specific embodiments of the present invention are described in detail herein, they are provided for the purpose of explanation only and should not be considered to limit the scope of the present invention. Various substitutions, changes and modifications may be conceived without departing from the spirit and scope of the present invention.

Claims

1. A rotary joint rotation resistance detection tool, characterized in that: It includes a bottom plate and a connecting plate fixed parallel to the bottom plate, the bottom plate is provided with a base, a torque sensor assembly is fixed in the base, and a display screen for displaying the torque value is provided on the side of the base; A turntable is provided on the top surface of the base, the lower end of the turntable is rotatably connected to the base via a connecting shaft, the lower end of the connecting shaft is connected to the torque sensor, and a lower positioning member for positioning the rotary joint housing is provided on the turntable; The connecting plate is fixedly provided with a motor, the shaft end of the motor is provided with a retractable transmission assembly, and the lower end of the transmission assembly is fixedly provided with an upper positioning member for connecting with the rotating body; When the motor drives the rotating body to rotate at a constant speed, the torque value displayed on the display screen is the rotation resistance value of the rotary joint.

2. A rotary joint rotation resistance detection tool according to claim 1, characterized in that: An upper bearing seat is provided on the top surface of the base, a thrust bearing is provided in the upper bearing seat, a lower bearing seat is provided in the base, a ball bearing is provided in the lower bearing seat, and the connecting shaft passes through the thrust bearing and the ball bearing and is connected to the torque sensor assembly.

3. The rotary joint rotation resistance detection tool according to claim 1 is characterized in that: A rectangular plug hole is arranged on the top surface of the torque sensor assembly, and a rectangular plug which is plugged into the rectangular plug hole is arranged on the lower end of the connecting shaft.

4. The rotary joint rotation resistance detection tool according to claim 1 is characterized in that: The lower positioning member includes a three-jaw chuck and a chuck seat fixed to the bottom of the three-jaw chuck. A plurality of notches are evenly arranged at the edge of the turntable, and a plurality of protrusions engaged with the notches are arranged at the bottom of the chuck seat.

5. A rotary joint rotation resistance detection tool as claimed in claim 4, characterized in that: An oblique chamfer is arranged at the edge of the lower end of the protrusion.

6. A rotary joint rotation resistance detection tool according to claim 1, 3 or 4, characterized in that: The transmission assembly includes a shaft sleeve and a transmission shaft slidably arranged in the shaft sleeve, the upper end of the shaft sleeve is fixedly connected to the shaft end of the motor, and the lower end of the transmission shaft extends out of the shaft sleeve and is fixedly connected to the upper positioning member; A vertical slot hole is arranged on the side surface of the shaft sleeve, and a pin shaft which is slidably connected with the vertical slot hole is fixed on the transmission shaft.

7. A rotary joint rotation resistance detection tool as claimed in claim 6, characterized in that: The upper positioning member is configured as a drill clamp.

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