CN217179444U

CN217179444U - Special detection tool for size of air compressor main unit screw exhaust end

Info

Publication number: CN217179444U
Application number: CN202220339571.8U
Authority: CN
Inventors: 方凌; 王磊; 彭猛
Original assignee: Suzhou Sullair Air Equipment Co Ltd
Current assignee: Hitachi Compressor Suzhou Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-08-12
Anticipated expiration: 2032-02-18

Abstract

The utility model discloses a special use of air compressor machine host computer screw rod exhaust end size detects frock, it relates to the screw compressor field. The technical scheme is characterized by comprising a ring body, wherein at least three reference positioning heads are arranged on the bottom wall of the ring body, a positioning support is arranged on the top wall of the ring body, and a dial indicator is arranged on the positioning support; the dial indicator comprises a measuring head, and the axis of the measuring head is parallel to the axis of the ring body. The utility model discloses simple structure, convenient operation and carrying are applicable to batch production.

Description

Special detection tool for size of air compressor main unit screw exhaust end

Technical Field

The utility model relates to a screw compressor field, more specifically say, it relates to a special frock that detects of air compressor machine host computer screw rod exhaust end size.

Background

The screw compressor is a positive displacement gas compression machine with a pair of mutually meshed screws rotating, and the structure of the screw compressor comprises a male screw rotor, a female screw rotor, bearings at two ends, a cavity and the like. As the temperature rise of the screw compressor is obvious during working, the screws are subjected to thermal expansion deformation in different directions. The screw clearance refers in particular to the axial clearance between the exhaust end of the screw and the end surface of the exhaust cavity, and the clearance needs to be controlled in the assembling process. If the screw clearance is too big, the host computer leaks the volume increase, influences host computer efficiency. If the screw clearance is too small, the situation that the screw is blocked easily occurs in the running process of the host, and the fault rate of the host is influenced. The clearance value is generally selected according to the size and the thermal expansion coefficient of the screw.

The screw clearance value is related to the shoulder dimension of the screw, which refers to the height from the mounting end face of the cylindrical bearing at the exhaust end to the end face of the profile of the screw. Due to factors such as processing cost and the like, the design deviation range of the shoulder size is large, and the shoulder size cannot be directly used as the reference size of a screw clearance assembly size chain and must be independently detected.

However, there is no detection tool suitable for the screw, so a three-coordinate measuring instrument is generally adopted to measure the size of the shoulder. And the three-coordinate measuring instrument is time-consuming and has no convenience.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an air compressor machine host computer screw rod exhaust end size's special use detects frock, its advantage that has simple structure, convenient operation is applicable to batch production.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a special detection tool for the size of an exhaust end of a screw of a main machine of an air compressor comprises a ring body, wherein the bottom wall of the ring body is provided with at least three reference positioning heads, the top wall of the ring body is provided with a positioning support, and a dial indicator is arranged on the positioning support; the dial indicator comprises a measuring head, and the axis of the measuring head is parallel to the axis of the ring body.

Furthermore, a plurality of datum locating heads are uniformly distributed along the circumferential direction.

Further, the bottom wall of the ring body is provided with a threaded mounting hole matched with the reference positioning head.

Further, the bottom end of the reference positioning head is spherical or conical.

Furthermore, the positioning support and the ring body are integrally formed.

Furthermore, the positioning bracket is L-shaped, the top wall of the positioning bracket is provided with a positioning hole matched with the dial indicator, and the side wall of the positioning bracket is provided with a locking hole communicated with the positioning hole; and a locking screw is arranged in the locking hole.

Furthermore, a bushing is embedded in the positioning hole, and a notch enabling the bushing to have radial deformation is formed in the side wall of the bushing.

Further, the outer side wall of the ring body is provided with a knob used for shifting the ring body.

Further, the outer side wall of the ring body is provided with two knobs which are oppositely arranged by 180 degrees.

Furthermore, the knob is provided with a stud embedded in the outer side wall of the ring body.

To sum up, the utility model discloses following beneficial effect has:

1. the structure is simple, the operation and the carrying are convenient, and the device is suitable for batch production;

2. the measuring reference surface is determined by adopting a plurality of reference measuring heads, so that the measuring precision can be improved.

Drawings

FIG. 1 is a schematic structural diagram of a special detection tool for the size of a screw exhaust end of a main machine of an air compressor in the embodiment;

FIG. 2 is an exploded schematic view of a special detection tool for the size of the exhaust end of the screw of the main machine of the air compressor in the embodiment;

FIG. 3 is a schematic structural view of the tooling and the screw in the embodiment.

In the figure: 1. a ring body; 11. positioning the bracket; 12. positioning holes; 13. a locking hole; 2. a reference positioning head; 3. a dial indicator; 4. a knob; 41. a stud; 5. a bushing; 51. a notch; 6. a locking screw; 7. a screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example (b):

a special detection tool for the size of a screw exhaust end of a main machine of an air compressor refers to fig. 1-3 and comprises a ring body 1, wherein the bottom wall of the ring body 1 is provided with at least three reference positioning heads 2, the top wall of the ring body 1 is provided with a positioning support 11, and a dial indicator 3 is arranged on the positioning support 11; the dial indicator 3 comprises a measuring head, and the axis of the measuring head is parallel to the axis of the ring body 1; during measurement, firstly, a reference block is adopted to calibrate the dial indicator 3 to zero, then the ring body 1 is sleeved on the shoulder of the screw 7, the reference positioning head 2 is in contact with the end face of the screw profile of the screw 7 to determine a measurement reference surface, a measuring head of the dial indicator 3 is in contact with the mounting end face of the cylindrical bearing at the exhaust end of the screw 7, and the shoulder size of the screw 7 can be measured after the height of the reference block is added with the measured value of the dial indicator 3; therefore, the detection tool in the embodiment has the advantages of simple structure and convenience in operation, and is suitable for batch production.

Referring to fig. 1 and 2, specifically, in the embodiment, the bottom wall of the ring body 1 is provided with three reference positioning heads 2, and the three reference positioning heads 2 are uniformly distributed along the circumferential direction, so that the measurement accuracy can be improved; in the embodiment, the bottom wall of the ring body 1 is provided with the threaded mounting hole matched with the reference positioning head 2, so that the reference positioning head 2 is convenient to mount and replace; in the embodiment, the reference positioning head 2 is provided with the limiting step, so that the mounting precision can be ensured; in the embodiment, the bottom end of the reference positioning head 2 is spherical, so that the positioning precision can be improved; of course, in other alternative embodiments, the bottom end of the reference positioning head 2 may have other shapes, such as a conical shape, and is not limited herein.

Referring to fig. 1 and 2, in the present embodiment, the positioning bracket 11 and the ring body 1 are integrally formed, so that the number of parts and the assembly process can be reduced, and the machining precision can be ensured; specifically, in the present embodiment, the positioning bracket 11 is L-shaped, the top wall of the positioning bracket 11 is provided with a positioning hole 12 matched with the dial indicator 3, the side wall of the positioning bracket 11 is provided with a locking hole 13 communicated with the positioning hole 12, and the locking hole 13 is internally provided with a locking screw 6; the dial indicator 3 is installed in the positioning hole 12, and the stability of the dial indicator 3 is ensured by the locking screw 6, so that the measurement precision can be improved; preferably, the positioning hole 12 is embedded with a bushing 5, and the sidewall of the bushing 5 is provided with a notch 51 for making the bushing 5 have radial deformation; the bushing 5 is matched with the locking screw 6 to lock the dial indicator 3, so that the dial indicator 3 is protected; preferably, the dial indicator 3 in the embodiment is a digital dial indicator, so that the measurement accuracy can be improved.

Referring to fig. 1 and 2, in the present embodiment, a knob 4 for dialing the ring body 1 is disposed on an outer side wall of the ring body 1; during measurement, the knob 4 is held by hands, so that the ring body 1 can be conveniently rotated to carry out multi-point measurement; preferably, two knobs 4 which are oppositely arranged at 180 degrees are arranged on the outer side wall of the ring body 1, and studs 41 which are embedded in the outer side wall of the ring body 1 are arranged on the knobs 4, so that the installation is convenient; certainly, in other alternative embodiments, the knob 4 may also be integrally formed on the outer side wall of the ring body 1, or welded on the outer side wall of the ring body 1, or clamped on the outer side wall of the ring body 1, which is not limited herein.

Claims

1. The utility model provides a special detection frock of air compressor machine host computer screw rod exhaust end size which characterized in that: the device comprises a ring body, wherein at least three datum positioning heads are arranged on the bottom wall of the ring body, a positioning bracket is arranged on the top wall of the ring body, and a dial indicator is arranged on the positioning bracket; the dial indicator comprises a measuring head, and the axis of the measuring head is parallel to the axis of the ring body.

2. The special detection tool for the size of the air compressor main unit screw exhaust end of claim 1, wherein the special detection tool comprises: and a plurality of reference positioning heads are uniformly distributed along the circumferential direction.

3. The special detection tool for the size of the air compressor main unit screw exhaust end of claim 1, wherein the special detection tool comprises: the bottom wall of the ring body is provided with a threaded mounting hole matched with the reference positioning head.

4. The special detection tool for the size of the air compressor main unit screw exhaust end of claim 1, wherein the special detection tool comprises: the bottom end of the reference positioning head is spherical or conical.

5. The special detection tool for the size of the air compressor main unit screw exhaust end of any one of claims 1 to 4, wherein: the positioning support and the ring body are integrally formed.

6. The special detection tool for the size of the air compressor main unit screw exhaust end of any one of claims 1 to 4, wherein: the positioning bracket is L-shaped, the top wall of the positioning bracket is provided with a positioning hole matched with the dial indicator, and the side wall of the positioning bracket is provided with a locking hole communicated with the positioning hole; and a locking screw is arranged in the locking hole.

7. The special detection tool for the size of the air compressor main unit screw exhaust end of claim 6, wherein: the positioning hole is internally embedded with a bushing, and the side wall of the bushing is provided with a notch which enables the bushing to have radial deformation.

8. The special detection tool for the size of the air compressor main unit screw exhaust end of any one of claims 1 to 4, wherein: the outer side wall of the ring body is provided with a knob used for shifting the ring body.

9. The special detection tool for the size of the air compressor main unit screw exhaust end of claim 8, wherein: the outer side wall of the ring body is provided with two knobs which are oppositely arranged at 180 degrees.

10. The special detection tool for the size of the air compressor main unit screw exhaust end of claim 8, wherein: the knob is provided with a stud embedded in the outer side wall of the ring body.