阅读说明：本技术 一种用于轴承液氮冷冻的工装 (be used for cryogenic frock of bearing liquid nitrogen ) 是由 江绪明 于 2018-06-06 设计创作，主要内容包括：本发明公开了一种用于轴承液氮冷冻的工装,包括液氮输送装置、轴承工装外壳、冷冻套筒、轴承、旋转底座和测量观测装置,所述液氮输送装置通过输液管连接下侧的轴承工装外壳,所述轴承工装外壳内侧通过输液管连接冷冻套筒,所述冷冻套筒分为两个部分、且分别为第一冷冻半管和第二冷冻半管,所述第一冷冻半管和第二冷冻半管通过固定器相连接,所述冷冻套筒内侧设有轴承,所述轴承底部通过可拆分方式镶嵌与旋转底座上,所述旋转底座上设有测量观测装置。本发明通过液氮输送装置的氮气发生器和加压装置对氮气进行液化,然后通过输液管将液态氮输送到冷冻套筒内,然后冷却喷头对内侧轴承进行均匀冷却,并且提高了冷却效率。(The invention discloses a tool for bearing liquid nitrogen freezing, which comprises a liquid nitrogen conveying device, a bearing tool shell, a freezing sleeve, a bearing, a rotating base and a measuring and observing device, wherein the liquid nitrogen conveying device is connected with the lower bearing tool shell through a liquid conveying pipe, the inner side of the bearing tool shell is connected with the freezing sleeve through the liquid conveying pipe, the freezing sleeve is divided into two parts and is respectively a first freezing half pipe and a second freezing half pipe, the first freezing half pipe and the second freezing half pipe are connected through a fixer, the bearing is arranged on the inner side of the freezing sleeve, the bottom of the bearing is detachably embedded in the rotating base, and the measuring and observing device is arranged on the rotating base. According to the invention, nitrogen is liquefied through the nitrogen generator and the pressurizing device of the liquid nitrogen conveying device, then the liquid nitrogen is conveyed into the freezing sleeve through the liquid conveying pipe, then the cooling spray head uniformly cools the inner bearing, and the cooling efficiency is improved.)

1. The utility model provides a frock for bearing liquid nitrogen is frozen, includes liquid nitrogen conveyor (1), bearing frock shell (2), freezing sleeve (3), bearing (4), rotating base (5) and measures observation device (6), its characterized in that: the liquid nitrogen conveying device (1) is connected with a bearing tool shell (2) on the lower side through a liquid conveying pipe (13), the inner side of the bearing tool shell (2) is connected with the freezing sleeve (3) through the liquid conveying pipe (13), the freezing sleeve (3) is divided into two parts which are respectively a first freezing half pipe (31) and a second freezing half pipe (32), the first freezing half pipe (31) and the second freezing half pipe (32) are connected through a fixer (33), a bearing (4) is arranged on the inner side of the freezing sleeve (3), the bottom of the bearing (4) is embedded on a rotating base (5) in a detachable mode, and a measuring and observing device (6) is arranged on the rotating base (5);

Cooling coils (34) are uniformly embedded in the inner wall of the freezing sleeve (3), the cooling coils (34) are longitudinally distributed, a cooling spray head (35) is embedded in the upper side of each cooling coil, and the interior of each cooling spray head (35) is of a porous structure;

the fixer (33) consists of a metal plate (331), a convex rod (332) and a groove (333), the metal plate (331) is welded on two sides of the freezing sleeve (3), the convex rod (332) is welded on the left side, and the groove (333) is embedded in the surface layer of the metal plate (331) on the right side;

Rotating base (5) comprise base (51), rolling bearing (52), motor (53) and carousel (54), base (51) upside swing joint rolling bearing (52), rolling bearing (52) electric connection motor (53) and upside are through removable branch mode connection carousel (54), carousel (54) upper surface is groove structure, and inside inlays and have bearing (4).

2. The tooling for freezing the bearing liquid nitrogen according to claim 1, characterized in that: survey observation device (6) and constitute by electronic measurement appearance (61), controller (62) and display screen (63), electronic measurement appearance (61) inlay in on carousel (54) and electric connection controller (62), controller (62) electric connection display screen (63), display screen (63) inlay in the bearing frock shell (2) outside.

3. the tooling for freezing the bearing liquid nitrogen according to claim 1, characterized in that: liquid nitrogen conveyor (1) comprises nitrogen generator (11), pressure device (12), transfer line (13), pressure valve (14) and return mechanism (15), inside pressure device (12) that is equipped with of nitrogen generator (11), the both sides of nitrogen generator (11) are passed through transfer line (13) and are connected freezing sleeve (3), transfer line (13) upside is inlayed and is had pressure valve (14), the lower left corner of freezing sleeve (3) is equipped with return mechanism (15).

4. The tooling for freezing the bearing liquid nitrogen according to claim 3, characterized in that: the backflow mechanism (15) is composed of a pump (151) and a backflow pipe (152), the pump (151) is connected with the backflow pipe (152), and the backflow pipe (152) is connected with the nitrogen generator (11) on the upper side.

Technical Field

the invention relates to the technical field of bearing tooling equipment, in particular to a tooling for bearing liquid nitrogen freezing.

background

In the process of mechanical assembly, the bearing is sometimes required to be cooled by a liquid nitrogen freezing mode during assembly, the purpose of bearing size reduction is achieved, the bearing is convenient to install, and the bearing reaches a normal temperature state and is increased in size through the principle of expansion with heat and contraction with cold after installation, so that the purpose of improving the stability of the bearing is achieved.

However, the currently used liquid nitrogen freezing tool for bearings generally adopts the purpose of inputting liquid nitrogen from one side when cooling the bearings, and the cooling speed of the bearings is low due to uneven cooling; and normally, after cooling is completed, the used liquid nitrogen is generally wasted. For this reason, a new scheme needs to be designed to give improvements.

disclosure of Invention

The invention aims to provide a tool for bearing liquid nitrogen freezing, which solves the problems in the background technology and meets the actual use requirements.

in order to achieve the purpose, the invention provides the following technical scheme: a tool for freezing a bearing by liquid nitrogen comprises a liquid nitrogen conveying device, a bearing tool shell, a freezing sleeve, a bearing, a rotary base and a measuring and observing device, wherein the liquid nitrogen conveying device is connected with the bearing tool shell on the lower side through a liquid conveying pipe;

The inner wall of the freezing sleeve is uniformly embedded with cooling coils which are longitudinally distributed, the upper side of each cooling coil is embedded with a cooling nozzle, and the inside of each cooling nozzle is of a porous structure;

The fixer consists of metal plates, convex rods and grooves, the metal plates are welded on two sides of the freezing sleeve, the convex rods are welded on the left side of the freezing sleeve, and the metal plates on the right side of the freezing sleeve are of a groove structure;

Rotating base comprises base, rolling bearing, motor and carousel, base upside swing joint rolling bearing, rolling bearing electric connection motor, and the upside connect the carousel through removable fraction mode, the carousel upper surface is groove structure, and inside inlays and have the bearing.

As a preferred embodiment of the present invention, the measurement and observation device is composed of an electronic measurement instrument, a controller and a display screen, the electronic measurement instrument is embedded in the turntable and electrically connected to the controller, the controller is electrically connected to the display screen, and the display screen is embedded in the outer side of the bearing tool housing.

as a preferred embodiment of the present invention, the liquid nitrogen delivery device comprises a nitrogen generator, a pressurizing device, a liquid transfer tube, a pressure valve and a reflux mechanism, wherein the pressurizing device is arranged inside the nitrogen generator, two sides of the nitrogen generator are connected with the freezing sleeve through the liquid transfer tube, the pressure valve is embedded on the upper side of the liquid transfer tube, and the reflux mechanism is arranged at the lower left corner of the freezing sleeve.

In a preferred embodiment of the present invention, the return mechanism is composed of a pump and a return pipe, the pump is connected to the return pipe, and the return pipe is connected to the upper nitrogen generator.

Compared with the prior art, the invention has the following beneficial effects:

1. The nitrogen generator and the pressurizing device of the liquid nitrogen conveying device liquefy nitrogen, then convey liquid nitrogen into the freezing sleeve through the liquid conveying pipe, and then uniformly cool the inner bearing through the cooling spray heads on the inner parts of the first freezing half pipe and the second freezing half pipe, and the cooling efficiency is improved.

2. the rotary base is arranged at the bottom of the bearing, the motor drives the rotary bearing on the upper side of the base to rotate, and then the turntable on the upper side is driven to rotate, so that the bearing on the upper side is driven to rotate, and the bearing is uniformly cooled in the rotating process.

3. The reflux mechanism is arranged at the lower left corner of the freezing sleeve, and the liquid nitrogen in the freezing sleeve is pumped back to the nitrogen generator through the reflux pipe by the pump, so that the aim of recycling the liquid nitrogen is fulfilled, and the energy-saving property of the device is improved.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a block diagram of the freezing sleeve of the present invention.

In the figure, 1-a liquid nitrogen conveying device, 2-a bearing tool shell, 3-a freezing sleeve, 4-a bearing, 5-a rotating base, 6-a measurement observation device, 11-a nitrogen generator, 12-a pressurizing device, 13-a liquid conveying pipe, 14-a pressure valve, 15-a backflow mechanism, 151-a pump, 152-a backflow pipe, 31-a first freezing half pipe, 32-a second freezing half pipe, 33-a fixer, 34-a cooling coil pipe, 35-a cooling spray head, 331-a metal plate, 332-a convex rod, 333-a groove, 51-a base, 52-a rotating bearing, 53-a motor, 54-a rotating disc, 61-an electronic measuring instrument, 62-a controller and 63-a display screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a tool for freezing a bearing liquid nitrogen comprises a liquid nitrogen conveying device 1, a bearing tool shell 2, a freezing sleeve 3, a bearing 4, a rotary base 5 and a measuring and observing device 6, wherein the liquid nitrogen conveying device 1 is connected with the bearing tool shell 2 on the lower side through a liquid conveying pipe 13, the inner side of the bearing tool shell 2 is connected with the freezing sleeve 3 through the liquid conveying pipe 13, the freezing sleeve 3 is divided into two parts and is respectively a first freezing half pipe 31 and a second freezing half pipe 32, the first freezing half pipe 31 and the second freezing half pipe 32 are connected through a fixer 33, the bearing 4 is arranged on the inner side of the freezing sleeve 3, the bottom of the bearing 4 is embedded in the rotary base 5 in a detachable mode, and the rotary base 5 is provided with the measuring and observing device 6;

Cooling coils 34 are uniformly embedded in the inner wall of the freezing sleeve 3, the cooling coils 34 are longitudinally distributed, a cooling nozzle 35 is embedded in the upper side of each cooling coil 34, and the inside of each cooling nozzle 35 is of a porous structure;

The fixer 33 is composed of a metal plate 331, a convex rod 332 and a groove 333, the metal plate 331 is welded on two sides of the freezing sleeve 3, the convex rod 332 is welded on the left side, and the groove 333 is embedded in the surface layer of the metal plate 331 on the right side;

the rotary base 5 is composed of a base 51, a rotary bearing 52, a motor 53 and a turntable 54, the rotary bearing 52 is movably connected to the upper side of the base 51, the rotary bearing 52 is electrically connected with the motor 53, the upper side of the rotary bearing 54 is connected with the turntable 54 in a detachable mode, the bearing 4 is embedded in the upper surface of the turntable 54, nitrogen is liquefied through a nitrogen generator 11 and a pressurizing device 12 of the liquid nitrogen conveying device 1, then the liquid nitrogen is conveyed into the freezing sleeve 3 through a liquid conveying pipe 13, then the inner bearing 4 is uniformly cooled through a cooling spray head 35 on the inner portion of the first freezing half pipe 31 and the second freezing half pipe 32, the cooling efficiency is improved, the rotary base 5 is arranged at the bottom of the bearing 4, the rotary bearing 52 on the upper side of the base 51 is driven to rotate through the motor 53, then the turntable 54 on the upper side is driven to rotate, so as to drive the bearing 54 on the, allowing the bearings 54 to be uniformly cooled during rotation.

Further improved, as shown in fig. 1: measure observation device 6 and constitute by electronic measurement appearance 61, controller 62 and display screen 63, electronic measurement appearance 61 inlay in on carousel 54 and electric connection controller 62, controller 62 electric connection display screen 63, display screen 63 inlay in the bearing frock shell 2 outside.

Further improved, as shown in fig. 1: liquid nitrogen conveyor 1 comprises nitrogen generator 11, pressure device 12, transfer line 13, pressure valve 14 and return circuit mechanism 15, 11 inside pressure device 12 that are equipped with of nitrogen generator, 11 both sides of nitrogen generator are passed through transfer line 13 and are connected freezing sleeve 3, 13 upsides of transfer line are inlayed and are had pressure valve 14, freezing sleeve 3's the lower left corner is equipped with return circuit mechanism 15, carries out the liquefaction through carrying out nitrogen gas at nitrogen generator 11 and pressure device 12 and handle, then carries through transfer line 13.

specifically, as shown in fig. 1: the backflow mechanism 15 is composed of a pump 151 and a backflow pipe 152, the pump 151 is connected with the backflow pipe 152, the backflow pipe 152 is connected with the nitrogen generator 11 on the upper side, the backflow mechanism 15 is arranged on the lower left corner of the freezing sleeve 3, liquid nitrogen in the freezing sleeve 3 is pumped back to the nitrogen generator 11 through the backflow pipe 152 through the pump 151, the purpose of recycling the liquid nitrogen is achieved, and the energy saving of the device is improved.

The working principle is as follows: the invention liquefies nitrogen through the nitrogen generator 11 and the pressurizing device 12 of the liquid nitrogen conveying device 1, then the liquid nitrogen is delivered into the freezing sleeve 3 through the infusion tube 13, then passes through the cooling nozzle 35 on the inside of the first freezing half-tube 31 and the second freezing half-tube 32, the inner bearing 4 is cooled evenly and the cooling efficiency is improved, the rotating base 5 is arranged at the bottom of the bearing 4, the rotating bearing 52 at the upper side of the base 51 is driven by the motor 53 to rotate, then the upper turntable 54 is driven to rotate, thereby driving the upper bearing 54 to rotate, so that the bearing 54 is uniformly cooled in the rotating process, by arranging the backflow mechanism 15 at the lower left corner of the freezing sleeve 3, the liquid nitrogen in the freezing sleeve 3 is pumped back to the nitrogen generator 11 through the backflow pipe 152 by the pump 151, so that the aim of recycling the liquid nitrogen is fulfilled, and the energy-saving property of the device is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.