CN211991721U

CN211991721U - Coupling press-fitting device

Info

Publication number: CN211991721U
Application number: CN202020307142.3U
Authority: CN
Inventors: 李鹏; 李树虎; 郭锐; 邓兴勃; 迟建波
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-11-24
Anticipated expiration: 2030-03-13

Abstract

The utility model relates to a coupling pressure equipment device, including pressure equipment lead screw, pressure equipment spare, oil pump and pressure equipment power component, the preceding tip of pressure equipment lead screw is connected with the oil filler point of axle head face, the center of pressure equipment lead screw has the through-hole that runs through, the other end and the oil pump connection of pressure equipment lead screw, the through-hole at pressure equipment lead screw center forms the oil circuit of connecting oil pump and axle, pressure equipment spare and pressure equipment power component suit are in proper order in the outside of pressure equipment lead screw, the preceding tip of pressure equipment spare supports and leans on the terminal surface of coupling, the preceding tip and the pressure equipment contact of pressure equipment power component, pressure equipment power component promotes the coupling through pressure equipment spare and realizes the pressure equipment. The utility model discloses utilize the structure that the pressure equipment lead screw opened central through-hole, cause the oil circuit of pressure equipment to the outside, can demolish oil pump joint at once after the pressure equipment is accomplished, carry out the pressure equipment of next shaft coupling, promote pressure equipment efficiency by a wide margin.

Description

Coupling press-fitting device

Technical Field

The utility model relates to an assembly fixture, in particular to shaft coupling pressure equipment device belongs to rail vehicle and makes technical field.

Background

Aiming at the drum-shaped gear coupling in the prior art, a motor and a small shaft of a gear box are in 1:50 taper fit connection, and the coupling is generally assembled by adopting an oil injection and hydraulic assembling method at present. The press-fitting method is adopted, an oil filling interface is required to be arranged at the shaft end of the small shaft and is connected with an oil pipe through a joint, the other end of the oil pipe is connected with an oil filling pump, a press-fitting sleeve is arranged on the front end face of the coupling, a groove is formed in the press-fitting sleeve and is used for the trend of the oil pipe, the press-fitting sleeve abuts against the press-fitting power assembly and is fixedly connected with the press-fitting power assembly through a lead screw, and the press-fitting of the coupling is realized by pushing.

The existing press-fitting tool has the following problems during field press-fitting: firstly, because the oil filling port of the small shaft is processed at the central position of the shaft end of the small shaft, the oil pipe of the oil filling pump is directly connected to the shaft end of the small shaft, after the assembly of the coupling press-fitting tool is completed, the oil pipe can be completely wrapped in the press-fitting tool, the oil pipe can not be removed immediately after the press-fitting is completed, the oil pipe joint of the oil filling pump can be removed only after the pressure maintaining process (30 minutes) is finished, the press-fitting efficiency is extremely low, and the oil filling pump is not suitable for batch assembly; secondly, because the problem that the machining depth is out of limit occasionally appears in the oil filler point of motor staff, the effective silk length of the oiling joint of oiling pump is too short for the joint can't normally seal after being connected to the oil filler point.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a shaft coupling pressure equipment device that can promote pressure equipment efficiency by a wide margin.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a press-fitting device for a shaft coupling comprises a press-fitting lead screw, a press-fitting part, an oil pump and a press-fitting power assembly, wherein the front end part of the press-fitting lead screw is connected with an oil filling hole in the end surface of a shaft, a through hole penetrating through the center of the press-fitting lead screw is arranged, the other end of the press-fitting lead screw is connected with the oil pump, an oil way for connecting the oil pump and the shaft is formed by the through hole in the center of the press-fitting lead screw, the press-fitting part and the press-fitting power assembly are sequentially sleeved on the outer side of the press-fitting lead screw, the front end part of the press-fitting part abuts against the end surface of the shaft.

Furthermore, the pressing piece is a pressing sleeve and is of a cylindrical structure with a closed end at one end.

The transition connecting block is arranged in the press-fitting sleeve and sleeved on the outer side of the press-fitting screw rod, and the transition connecting block is fixedly connected with the press-fitting screw rod and the end face of the shaft at the same time.

Furthermore, the transition connecting block is fixedly connected with the shaft end face through a plurality of bolts.

Furthermore, the transition connecting block is in threaded connection with the press-fitting screw rod.

Furthermore, the outer diameter of the transition connecting block is matched with the inner diameter of the press-fit sleeve to realize radial positioning.

Further, the inner diameter of the press-fitting sleeve is smaller than the diameter of the central hole of the coupling, the outer diameter of the press-fitting sleeve is larger than the diameter of the central hole of the coupling, the part, close to the outer side, of the front end face of the press-fitting sleeve is matched with the end face of the coupling to achieve transmission of axial force during press-fitting, and the part, close to the inner side, of the press-fitting sleeve stretches into the central hole of the coupling to form a limit stop of the end face.

And furthermore, a stopping structure is arranged at the rear end part of the press-fitting power assembly and comprises a stopping pad and a stopping nut, and the stopping nut is in threaded connection with the press-fitting screw rod.

Further, a viewing port is provided at a front end portion of the press fitting, and the viewing port is configured to allow a connection portion of the press fitting and the coupling to be visible.

Further, an oil drain hole is formed in the bottom of the press fitting part.

Compared with the prior art, the coupling press-fitting device of the present invention has the following advantages:

(1) the device utilizes the structure that the central through hole is opened to the pressure equipment lead screw, leads the oil circuit of pressure equipment to the outside, can demolish oil pump joint immediately after the pressure equipment is accomplished, carries out the pressure equipment of next shaft coupling, has promoted pressure equipment efficiency by a wide margin.

(2) The device utilizes the pressure equipment lead screw to be connected with the oil filler point of axle head, and the effective filament length of pressure equipment lead screw front end oiling sealing thread can extend, when the problem that the depth of work transfinites appears in the oil filler point to the motor staff, still can guarantee threaded connection's length, guarantees that the oil filler point is normally sealed.

Drawings

Fig. 1 is a schematic structural view of the press-fitting device of the present invention;

FIG. 2 is a schematic view of the structure of the press-fitting lead screw of the present invention;

FIG. 3 is a schematic view of the press-fitting sleeve of the present invention;

fig. 4 is the rear end face structure diagram of the transition connecting block of the present invention.

As shown in fig. 1 to 4, a coupling 1, a shaft 2, a press-fitting screw rod 3, a first section 3a, a second section 3b, a third section 3c, a fourth section 3d, a press-fitting sleeve 4, a press-fitting power assembly 5, a transition connecting block 6, an oil injection hole 7, a central through hole 8, a joint 9, an observation port 10, an oil discharge hole 11, a central hole 12, a through hole 13, a bolt 14, a bolt mounting hole 15, a retaining pad 16 and a retaining nut 17.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, the present embodiment provides a coupling press-fitting device for press-fitting a coupling 1 onto a shaft 2, which includes a press-fitting screw 3, a press-fitting member, an oil pump, a press-fitting power assembly 5, and a transition connection block 6.

As shown in fig. 1 and 2, in the present embodiment, the press-fitting screw shaft 3 is divided into four sections, and the foremost end first section 3a is threaded for connection with the oil hole 7 at the center of the end face of the shaft 2; the adjacent second section 1b is provided with threads and is fixedly connected with the transition connecting block 6; the third section 1c is a smooth shaft section and is used for being connected with a jack in the press-fitting power assembly 5; the fourth section 1d is provided with threads for connecting a retaining structure of the press-fitting power assembly 5.

In this embodiment, the press-fitting screw 3 has a through center through hole 8, the diameter of the center through hole 8 is preferably 3mm, the front end of the press-fitting screw 3 is connected to an oil filling hole 7 in the center of the end face of the shaft 2, the rear end of the press-fitting screw is connected to an oil pump (not shown) through a joint 9, the center through hole 8 of the press-fitting screw 3 forms a press-fitting oil path connecting the oil pump and the shaft 2, high-pressure oil required during press-fitting enters the oil filling hole 7 of the shaft 2 through the center through hole 8, injection of the high-pressure oil between the mating surfaces of the coupling 1 and the shaft 2 is realized, a high-pressure oil film is generated between the mating surfaces by the characteristic that the liquid is incompressible, and the coupling 1 is in a suspended state. The device causes the oil circuit of the required oil supply of pressure equipment to the outside of the device, realizes the external connection function of oil pump oiling joint 9, and after the pressure equipment was accomplished, operating personnel can demolish joint 9 of oil pump immediately, can carry out the pressure equipment of next shaft coupling 1 and axle 2, need not wait for 30 minutes dwell time among the prior art again, has promoted pressure equipment efficiency by a wide margin.

In this embodiment, utilize pressure equipment lead screw 3 and 2 terminal surface centers of axle oil filler point 7 to pass through threaded connection, the effective length of a thread of pressure equipment lead screw 3 front end oiling seal can be lengthened, when the problem that the depth of work transfinites appears in oil filler point 7 to motor shaft 2, still can guarantee threaded connection's length, guarantee that oil filler point 7 is normally sealed.

As shown in fig. 1 and fig. 3, in the present embodiment, the press fitting member for transmitting axial force preferably adopts a structure of a press fitting sleeve 4, the press fitting sleeve 4 is a rigid cylindrical structure with an open front end and a closed tail end, and is sleeved outside the press fitting screw rod 3, a central hole 12 at the tail end of the press fitting sleeve 4 is used for passing through the press fitting screw rod 1, and the front end of the press fitting sleeve 4 abuts against the end surface of the coupling 1. The press-fitting sleeve 4 mainly bears the axial press-fitting force of a jack in the press-fitting power component 5 and transmits the press-fitting force to the end face of the coupling 1 to complete the press-fitting of the coupling 1. Of course, the press fitting piece can also adopt a structure of a press fitting gasket according to the requirement, the center of the press fitting gasket is provided with a center hole penetrating through the press fitting screw rod 3, and the press fitting gasket is contacted with the end surface of the coupling 1 to transfer the axial force.

The press-fitting power assembly 5 comprises a press-fitting pump for power input and a jack for outputting axial force, the jack of the press-fitting power assembly 5 is sleeved outside the press-fitting screw rod 3, and the front end of the jack is in contact with the tail end of the press-fitting sleeve 4 and is used for transmitting the axial force generated by the jack of the press-fitting power assembly 5 to the coupling 1.

In this embodiment, preferably, the inner diameter of the press-fitting sleeve 4 is smaller than the diameter of the central hole of the coupling 1 (i.e., the mounting hole of the shaft 2), the outer diameter of the press-fitting sleeve 4 is larger than the diameter of the central hole of the coupling 1, the circumferential part of the front end surface of the press-fitting sleeve 4 close to the outer side is matched with the end surface of the coupling 1 to realize the transmission of axial force during press-fitting, the circumferential part close to the inner side is inserted into the central hole of the coupling 1, the inserted circumferential part of the inner side forms a limit stop for the end surface of the shaft 2, when the end surface of the shaft 2 pressed against the circumferential part of the inner side of the press-fitting sleeve 4, it is proved.

The front end part of the press fitting sleeve 4 is also provided with an observation port 10, the observation port 10 is a through elongated hole formed in the cylinder wall of the press fitting sleeve 4, the connecting part of the press fitting sleeve 4 and the coupling 1 can be seen through the observation port 10, and an operator can observe the position state after press fitting through the observation port 10 conveniently. The bottom of the press fitting sleeve 4 is also provided with an oil discharge hole 11, so that residual press fitting oil in the press fitting process of the coupling 1 can be discharged conveniently, and the pollution of grease in the coupling 1 caused by the fact that the grease flows into the coupling 1 is avoided.

As shown in fig. 1 and 4, the transition connecting block 6 is a cylindrical structure having a central through hole 13, and is installed inside the press-fitting sleeve 4 and sleeved outside the press-fitting screw 3. Through three bolt 14 fixed connection between the terminal surface of transition connecting block 6 and axle 2, fasten three bolt 14, make transition connecting block 6 and axle 2 fixed connection together, simultaneously, the through-hole 13 of transition connecting block 6 has the internal thread, and through threaded connection between the pressure equipment lead screw 3.

The transitional connection block 6 realizes the secondary connection of the press-fitting lead screw 3 and the shaft 2, effectively ensures the tensile strength of the press-fitting device, greatly improves the capability of the device for bearing the axial tension when the shaft coupling 1 is pressed, avoids the safety problem that the press-fitting lead screw 3 is broken in the press-fitting process, and prolongs the service life of the device. Through threaded connection between transition connecting block 6 and the pressure equipment lead screw 3, be favorable to the circumference corner position when convenient adjustment transition connecting block 6 installation, make 3 bolt mounting hole 15 on the transition connecting block 6 align with 3 screw (not marking in the figure) on the 2 terminal surfaces of axle, make things convenient for operating personnel to install.

In this embodiment, the outer diameter of the transition connecting block 6 is matched with the inner diameter of the press-fitting sleeve 4, and the radial positioning of the press-fitting sleeve 4 is realized by using the transition connecting block 6, so that the axial force can be effectively transmitted.

As shown in fig. 1, a retaining structure is arranged at the rear end of the press-fitting power assembly 5, the retaining structure includes a retaining pad 16 and a retaining nut 17, the retaining pad 16 is sleeved on the press-fitting screw rod 3 and is closely attached to the tail end face of the press-fitting power assembly 5, the retaining nut 17 is in threaded connection with the fourth section 3d of the press-fitting screw rod 3 and is closely attached to the retaining pad 16, so that the axial positioning of the press-fitting power assembly 5 is completed, and the axial force generated during press-fitting of the press-fitting power assembly 5 is borne.

Similar solutions can be derived from the solution given in the figures, as described above. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solution of the present invention, unless departing from the content of the technical solution of the present invention.

Claims

1. The utility model provides a shaft coupling pressure equipment device, includes pressure equipment lead screw, pressure equipment spare, oil pump and pressure equipment power component, its characterized in that: the front end part of the press-fitting screw rod is connected with an oil filling hole in the end face of the shaft, a through hole penetrating through the center of the press-fitting screw rod is formed, the other end of the press-fitting screw rod is connected with an oil pump, an oil way for connecting the oil pump and the shaft is formed by the through hole in the center of the press-fitting screw rod, the press-fitting part and the press-fitting power assembly are sequentially sleeved on the outer side of the press-fitting screw rod, the front end part of the press-fitting part abuts against the end face of the coupling, the front end part of the press-fitting power assembly is in contact.

2. A coupling press-fitting device according to claim 1, wherein: the pressing piece is a pressing sleeve and is of a cylindrical structure with a closed end at one end.

3. A coupling press-fitting device according to claim 2, wherein: the transition connecting block is arranged in the press-fitting sleeve and sleeved outside the press-fitting screw rod, and is fixedly connected with the press-fitting screw rod and the shaft end face.

4. A coupling press-fitting device according to claim 3, wherein: the transition connecting block is fixedly connected with the shaft end face through a plurality of bolts.

5. A coupling press-fitting device according to claim 3, wherein: and the transition connecting block is in threaded connection with the press-fitting screw rod.

6. A coupling press-fitting device according to claim 3, wherein: the outer diameter of the transition connecting block is matched with the inner diameter of the press-fit sleeve to realize radial positioning.

7. A coupling press-fitting device according to claim 2, wherein: the inner diameter of the press-fitting sleeve is smaller than the diameter of the central hole of the coupling, the outer diameter of the press-fitting sleeve is larger than the diameter of the central hole of the coupling, the part, close to the outer side, of the front end face of the press-fitting sleeve is matched with the end face of the coupling to achieve transmission of axial force during press-fitting, and the part, close to the inner side, of the press-fitting sleeve stretches into the central hole of the coupling to form a limiting stop of the end.

8. A coupling press-fitting apparatus according to claim 1 or 2, wherein: the back end part of the press-fitting power assembly is provided with a retaining structure, the retaining structure comprises a retaining pad and a retaining nut, and the retaining nut is in threaded connection with the press-fitting screw rod.

9. A coupling press-fitting apparatus according to claim 1 or 2, wherein: the front end of the press fitting is provided with a viewing port which is configured to be capable of seeing the connection part of the press fitting and the shaft coupling.

10. A coupling press-fitting apparatus according to claim 1 or 2, wherein: and an oil discharge hole is formed in the bottom of the pressing piece.