CN214118614U - Plug body lifting device of hot isostatic pressing machine - Google Patents
Plug body lifting device of hot isostatic pressing machine Download PDFInfo
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- CN214118614U CN214118614U CN202022450450.4U CN202022450450U CN214118614U CN 214118614 U CN214118614 U CN 214118614U CN 202022450450 U CN202022450450 U CN 202022450450U CN 214118614 U CN214118614 U CN 214118614U
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Abstract
The utility model relates to a hot isostatic pressing machine cock body elevating gear belongs to hot isostatic pressing equipment technical field, has solved that current cock body elevating gear lifting force is little, the lifting accuracy is low, easy damage when cock body sealing washer business turn over barrel causes the problem that life is short. The plug body lifting device of the hot isostatic pressing machine comprises a constant-speed oil cylinder, a three-position four-way electromagnetic reversing valve, a one-way speed regulating valve and a hydraulic control one-way valve; the cylinder body of the constant-speed oil cylinder is fixedly connected with a frame of the hot isostatic pressing machine, the lower end of a piston rod of the constant-speed oil cylinder is connected with a plug body of the hot isostatic pressing machine, and the constant-speed oil cylinders are distributed along the circumferential direction of the plug body. The plug body is synchronously lifted by four constant-speed oil cylinders, the plug body lifting centering precision is high, and a plug body sealing ring is not easily damaged when passing in and out of the barrel, so that the danger of scratching the sealing area of the barrel is effectively reduced, and the service life of the sealing ring is prolonged; the plug body lifting device has good stress condition, stable operation and safe and reliable work.
Description
Technical Field
The utility model relates to a hot isostatic pressing equipment technical field especially relates to a hot isostatic pressing machine cock body elevating gear.
Background
The hot isostatic press is an apparatus for pressing and sintering a product by applying a uniform pressure to the surface of the product by a uniform pressure transmission of an inert gas (nitrogen, argon, or the like) in a closed container and applying an equal pressure to the product under the combined action of high temperature and high pressure. With the rapid development of technology and materials industries, the hot isostatic pressing machine becomes important industrial equipment in modern industries, and especially, the large-size and high-performance hot isostatic pressing machine has important application value in practical production.
The hot isostatic pressing machine is used as high-technology equipment combined with multiple subjects, the equipment price is relatively expensive, the use and maintenance cost is high, and the large hot isostatic pressing machine obviously reduces the hot isostatic pressing processing cost of workpieces and provides possibility for the hot isostatic pressing processing of large-size workpieces. Along with the increase of the effective working size of the hot isostatic pressing machine, the weight of the plug body of the hot isostatic pressing machine is greatly increased, and the defects of the traditional plug body lifting device in the application of the large-specification hot isostatic pressing machine are gradually highlighted. At present, a shifting fork lifting device is generally adopted for a plug body of a hot isostatic pressing machine, as shown in fig. 1, a piston rod of an oil cylinder drives a fork plate shaft and a shifting fork plate to move under the action of pressure oil, and the rising, falling and twisting movement of the plug body is realized. However, due to processing and manufacturing errors of the lifting device and a certain gap between the rolling body and the spiral guide groove in the structure, the movement paths of the rolling body cannot be completely overlapped in the rising and falling processes of the plug body, so that the rising and falling processes of the plug body are not overlapped with the center of the cylinder body, the alignment generates deviation, the sealing effect of the sealing ring in the sealing area is further influenced, even the sealing ring is damaged, and the sealing area of the cylinder body is scratched. Meanwhile, the plug body of the large hot isostatic pressing machine is relatively large in size and weight, the shifting fork lifting device is of a cantilever structure, the distance between the gravity center of the plug body and the axis of a fork plate shaft (or an oil cylinder) is relatively long, the shifting fork plate bears large bending moment, the shifting fork plate is seriously deformed in the using process to cause the deflection of the plug body, the plug body is easily clamped in the opening and closing process and cannot ascend and descend, and the plug body is difficult to apply to large equipment.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the utility model aims at providing a hot isostatic pressing machine cock body elevating gear to it is little to solve current cock body elevating gear lifting power, and the low, easy damage when the cock body sealing washer business turn over barrel of lifting precision leads to the short problem of life.
The purpose of the utility model is mainly realized through the following technical scheme:
a plug body lifting device of a hot isostatic pressing machine comprises a constant-speed oil cylinder, a three-position four-way electromagnetic reversing valve, a one-way speed regulating valve and a hydraulic control one-way valve;
the cylinder body of the constant-speed oil cylinder is fixedly connected with a frame of the hot isostatic pressing machine, the lower end of a piston rod of the constant-speed oil cylinder is connected with a plug body of the hot isostatic pressing machine, and the constant-speed oil cylinders are distributed along the circumferential direction of the plug body.
Further, the constant speed oil cylinders comprise a first constant speed oil cylinder, a second constant speed oil cylinder, a third constant speed oil cylinder and a fourth constant speed oil cylinder which are distributed along the circumferential direction of the plug body.
Further, an oil outlet of the first constant-speed oil cylinder is communicated with an oil inlet of a third constant-speed oil cylinder to form a first series oil cavity; and an oil outlet of the fourth constant-speed oil cylinder is communicated with an oil inlet of the second constant-speed oil cylinder to form a second serial oil chamber.
Further, the three-position four-way electromagnetic directional valve comprises a J-shaped three-position four-way electromagnetic directional valve, a first Y-shaped three-position four-way electromagnetic directional valve and a second Y-shaped three-position four-way electromagnetic directional valve.
Furthermore, the J-shaped three-position four-way electromagnetic reversing valve, the first Y-shaped three-position four-way electromagnetic reversing valve and the second Y-shaped three-position four-way electromagnetic reversing valve respectively comprise P, T, A oil ports and B oil ports, the P oil port represents an oil inlet, the T oil port represents an oil return port, and the A oil port and the B oil port represent working oil ports; and a P oil port of the J-shaped three-position four-way electromagnetic directional valve is connected with a hydraulic pump, and a T oil port is connected with an oil tank.
Furthermore, the oil path of the outlet of the oil port A is divided into branches A1 and A2, and the oil path of the outlet of the oil port B is divided into branches B1 and B2; the A1 branch is connected with an oil inlet of the first constant-speed oil cylinder, and the A2 branch is connected with an oil inlet of the fourth constant-speed oil cylinder; the branch B1 is connected with the oil outlet of the third constant speed oil cylinder, and the branch B2 is connected with the oil outlet of the second constant speed oil cylinder.
Furthermore, the one-way speed regulating valve comprises a first one-way speed regulating valve and a second one-way speed regulating valve, the first one-way speed regulating valve is positioned on the branch A1, and the second one-way speed regulating valve is positioned on the branch B1.
Furthermore, the first Y-shaped three-position four-way electromagnetic reversing valve is located in the first serial oil cavity, and the second Y-shaped three-position four-way electromagnetic reversing valve is located in the second serial oil cavity.
Further, the pilot operated check valve includes a first pilot operated check valve and a second pilot operated check valve.
Further, the first hydraulic control one-way valve is located in the first serial oil cavity, and the second hydraulic control one-way valve is located in the second serial oil cavity.
The utility model discloses can realize one of following beneficial effect at least:
(1) the utility model discloses a hot isostatic pressing machine cock body elevating gear is equipped with the accumulative total error remove device of constant velocity cylinder, and the precision is high in the cock body goes up and down, is difficult for receiving the damage when cock body sealing washer business turn over barrel, effectively reduces the danger in fish tail barrel sealing area.
(2) The utility model discloses a hot isostatic pressing machine cock body elevating gear, the cock body drives through four constant velocity cylinder, and synchronous lift, cock body elevating gear have the good atress condition, operate steadily, work safe and reliable.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
FIG. 1 is a prior art stopper body lifting device;
fig. 2 is a front view of a stopper lifting device according to an embodiment of the present invention;
fig. 3 is an isometric view of a plug body lifting device according to an embodiment of the present invention;
fig. 4 is a hydraulic schematic diagram of a plug body lifting device according to an embodiment of the present invention.
Reference numerals:
1-a limit ring, 2-a constant speed oil cylinder, 21-a first constant speed oil cylinder, 22-a second constant speed oil cylinder, 23-a third constant speed oil cylinder, 24-a fourth constant speed oil cylinder, 3-a frame, 4-a cock body hinged support, 5-a pin shaft, 6-a cock body, 7-a cylinder body, 8-J type three-position four-way electromagnetic directional control valve, 9-a first Y type three-position four-way electromagnetic directional control valve, 10-a second Y type three-position four-way electromagnetic directional control valve, 11-a first one-way speed regulating valve, 12-a second one-way speed regulating valve, 13-a first hydraulic control one-way valve, 14-a second hydraulic control one-way valve, S-1-a first upper travel switch, S-1 '-a first lower travel switch, S-2-a second upper travel switch, S-2' -a second lower travel switch, s-3-third upper travel switch, S-3 '-third lower travel switch, S-4-fourth upper travel switch, and S-4' -fourth lower travel switch.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of the invention, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection via an intermediate medium. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
For convenience of explanation, when the constant velocity cylinder is arranged as shown in fig. 4, the upper part of the constant velocity cylinder is set as an upper cavity, and the lower part is set as a lower cavity.
Example 1
An embodiment of the utility model, as shown in fig. 2 to 4, discloses a plug body lifting device of a hot isostatic pressing machine, which comprises a constant-speed oil cylinder 2, a plug body hinged support 4, a three-position four-way electromagnetic directional valve, a one-way speed regulating valve and a hydraulic control one-way valve, wherein the cylinder body of the constant-speed oil cylinder 2 is fixed on a hot isostatic pressing machine frame 3 by a connecting bolt, the upper end of the piston rod of the constant-speed oil cylinder 2 is provided with a limit ring 1 for triggering a travel switch when the piston rod of the constant-speed oil cylinder moves to a travel end point, the lower end of the piston rod is hinged with the plug body hinged support 4 through a cylindrical pin shaft 5, the plug body hinged supports 4 are distributed along the circumferential direction of the plug body, the plug body hinged support 4 is fixedly connected with a plug body 6 of the hot isostatic pressing machine through the connecting bolt, the number of the constant-speed oil cylinders 2 is the same as that of the plug body hinged supports 4, and is more than one, preferably, the embodiment is provided with four constant-speed oil cylinders 2 and four plug body hinged supports 4, the connecting line of the interphase plug body hinged support 4 coincides with the diameter of the plug body 6, so that the plug body 6 is stressed uniformly in the ascending and descending processes, and the phenomenon that the plug body 6 scratches a cylinder sealing area when entering and exiting the cylinder 7 due to the inclination of the plug body 6 is avoided.
In fig. 2, an oil outlet of the constant speed oil cylinder 2 is positioned at the upper part of the cylinder body, and an oil inlet is positioned at the lower part of the cylinder body. The constant velocity cylinders 2 include a first constant velocity cylinder 21, a second constant velocity cylinder 22, a third constant velocity cylinder 23, and a fourth constant velocity cylinder 24.
The hydraulic control oil circuit connection of the constant speed oil cylinder 2 is as shown in fig. 4, and the three-position four-way electromagnetic directional valve comprises a J-shaped three-position four-way electromagnetic directional valve 8, a first Y-shaped three-position four-way electromagnetic directional valve 9 and a second Y-shaped three-position four-way electromagnetic directional valve 10; the one-way speed regulating valve comprises a first one-way speed regulating valve 11 and a second one-way speed regulating valve 12; the pilot operated check valves include a first pilot operated check valve 13 and a second pilot operated check valve 14. The P oil port of the three-position four-way electromagnetic directional valve represents an oil inlet, the T oil port represents an oil return port, and the A oil port and the B oil port represent working oil ports. The 1Y of the J-type three-position four-way electromagnetic directional valve 8, the 3Y of the first Y-type three-position four-way electromagnetic directional valve 9, and the 5Y of the second Y-type three-position four-way electromagnetic directional valve 10 denote left coils, and the 2Y, 4Y, and 6Y denote right coils. The middle position function of the J-shaped three-position four-way electromagnetic reversing valve 8 is J-shaped, when the reversing valve is positioned at the middle position, the oil port P and the oil port A are closed, and the other working oil port B is connected with the oil return port T. The 3Y of the first Y-shaped three-position four-way electromagnetic reversing valve 9 and the middle position of the second Y-shaped three-position four-way electromagnetic reversing valve 10 can be Y-shaped, when the reversing valve is positioned at the middle position, the oil port P is closed, and the oil port A and the oil port B are communicated with the oil return port T.
The P oil port of the J-shaped three-position four-way electromagnetic directional valve 8 is connected with a hydraulic pump, and the T oil port is connected with an oil tank. The oil path at the outlet of the oil port A is divided into a branch A1 and a branch A2, the branch A1 is connected with the oil inlet of the first constant speed oil cylinder 21, and the branch A2 is connected with the oil inlet of the fourth constant speed oil cylinder 24; the oil path of the outlet of the oil port B is divided into branches B1 and B2, the branch B1 is connected with the oil outlet of the third equal-speed oil cylinder 23, and the branch B2 is connected with the oil outlet of the second equal-speed oil cylinder 22. The first one-way speed regulating valve 11 is positioned on an oil inlet branch A1 of the first constant-speed oil cylinder 21, the second one-way speed regulating valve 12 is positioned on an oil outlet branch B1 of the third constant-speed oil cylinder 23, and the one-way speed regulating valve is used for regulating speed in the plug body lifting process. An oil outlet of the first constant-speed oil cylinder 21 is communicated with an oil inlet of the third constant-speed oil cylinder 23 to form a first series oil cavity, so that the first constant-speed oil cylinder 21 and the third constant-speed oil cylinder 23 can be synchronously lifted, and the first series oil cavity is connected with an oil outlet of a hydraulic pump through a first Y-shaped three-position four-way electromagnetic reversing valve 9 and a first hydraulic control one-way valve 13; an oil outlet of the fourth constant speed oil cylinder 24 is communicated with an oil inlet of the second constant speed oil cylinder 22 to form a second serial oil chamber, so that the second constant speed oil cylinder 22 and the fourth constant speed oil cylinder 24 can be synchronously lifted. The second series oil cavity is connected with the oil outlet of the hydraulic pump through a second Y-shaped three-position four-way electromagnetic directional valve 10 and a second hydraulic control one-way valve 14, and the first Y-shaped three-position four-way electromagnetic directional valve 9 and the second Y-shaped three-position four-way electromagnetic directional valve 10 are used for eliminating accumulated errors of the constant-speed oil cylinder and pre-charging hydraulic oil in a series loop at a debugging stage.
Furthermore, the upper end point and the lower end point of the stroke of the first constant speed oil cylinder 21 are respectively provided with a first upper stroke switch S-1 and a first lower stroke switch S-1'; the upper end point and the lower end point of the stroke of the second constant-speed oil cylinder 22 are respectively provided with a second upper stroke switch S-2 and a second lower stroke switch S-2'; the upper end point and the lower end point of the stroke of the third constant-speed oil cylinder 23 are respectively provided with a third upper stroke switch S-3 and a third lower stroke switch S-3'; the upper and lower end points of the stroke of the fourth constant-speed oil cylinder 24 are respectively provided with a fourth upper stroke switch S-4 and a fourth lower stroke switch S-4'. The travel switch is used for controlling the power on and off of the Y-shaped three-position four-way electromagnetic reversing valve, after the constant-speed oil cylinder 2 runs to a travel end point, the travel switch is triggered, the travel switch enables a coil corresponding to the three-position four-way electromagnetic reversing valve to be electrified, the flow direction of pressure oil is changed, and therefore synchronous errors are eliminated.
It should be noted that the above description of the embodiment of the plug body lifting device is based on the upper plug body of the hot isostatic press, and the plug body lifting device of the embodiment is also applicable to the lower plug body of the hot isostatic press. When the lifting device is applied to the lower plug body, the constant-speed oil cylinder is connected with the cylinder body.
Example 2
An embodiment of the present invention discloses a lifting method using the plug body lifting device of the hot isostatic pressing machine in embodiment 1.
Specifically, the ascending step includes:
a coil 1Y of the J-shaped three-position four-way electromagnetic directional valve 8 is electrified, an oil port A is communicated with an oil port P, and pressure oil enters the oil port A from the oil port P and is divided into an A1 branch and an A2 branch after passing through the oil port A. The pressure oil of the branch A1 enters the lower cavity of the first constant speed oil cylinder 21 through the first one-way speed regulating valve 11, and the piston rod of the first constant speed oil cylinder 21 moves upwards; meanwhile, the pressure oil of the branch A2 enters the lower cavity of the fourth constant speed oil cylinder 24, and the piston rod of the fourth constant speed oil cylinder 24 moves upwards.
with the upward movement of the piston rod of the first constant speed cylinder 21, the pressure of the upper cavity of the first constant speed cylinder 21 rises, the hydraulic oil is pressed into the lower cavity of the third constant speed cylinder 23 through the oil outlet of the first constant speed cylinder 21, and the piston rod of the third constant speed cylinder 23 moves upward. Meanwhile, as the piston rod of the fourth constant speed cylinder 24 moves upward, the pressure of the upper chamber of the fourth constant speed cylinder 24 rises, the hydraulic oil is pressed into the lower chamber of the second constant speed cylinder 22 from the oil outlet of the fourth constant speed cylinder 24, and the piston rod of the second constant speed cylinder 22 moves upward.
And 3, hydraulic oil in the upper cavities of the third constant-speed oil cylinder 23 and the second constant-speed oil cylinder 22 flows back to the oil tank, and the plug body 6 is driven by the constant-speed oil cylinders to rise:
along with the upward movement of the piston rod of the third constant-speed oil cylinder 23, hydraulic oil in the upper cavity of the third constant-speed oil cylinder 23 flows into the oil port B of the J-shaped three-position four-way electromagnetic directional valve 8 from the branch B1 through the second one-way speed regulating valve 12 and flows back to the oil tank through the oil port T, so that the synchronous ascending movement of the first constant-speed oil cylinder 21 and the third constant-speed oil cylinder 23 is realized; meanwhile, as the piston rod of the second constant-speed cylinder 22 moves upward, the hydraulic oil in the upper chamber of the second constant-speed cylinder 22 flows into the B oil port of the J-shaped three-position four-way electromagnetic directional valve 8 from the B2 branch, and flows back to the oil tank through the T oil port, so that the synchronous upward movement of the second constant-speed cylinder 22 and the fourth constant-speed cylinder 24 is realized.
Further, as the connecting line of the first constant-speed cylinder 21 and the third constant-speed cylinder 23 coincides with the diameter of the plug body 6, the connecting line of the second constant-speed cylinder 22 and the fourth constant-speed cylinder 24 coincides with the diameter of the plug body 6, and the piston cylinders of the constant-speed cylinders are connected with the plug body, the first constant-speed cylinder 21, the third constant-speed cylinder 23, the second constant-speed cylinder 22 and the fourth constant-speed cylinder 24 can synchronously ascend, and the plug body 6 is driven to stably ascend.
When the plug is required to be lowered to shut down the hot isostatic press, the step of lowering comprises:
a coil 2Y of the J-shaped three-position four-way electromagnetic directional valve 8 is electrified, an oil port B is communicated with an oil port P, and an oil port A is communicated with an oil port T. The pressure oil enters a P oil port of the J-shaped three-position four-way electromagnetic directional valve 8 and enters a B oil port, and the pressure oil is divided into a branch B1 and a branch B2 after passing through the B oil port. The pressure oil of the branch B1 enters the upper cavity of the third constant-speed oil cylinder 23 through the second one-way speed regulating valve 12, and the piston rod of the third constant-speed oil cylinder 23 moves downwards; meanwhile, the B2 branch pressure oil enters the upper chamber of the second constant speed cylinder 22, and the piston rod of the second constant speed cylinder 22 moves downward.
as the piston rod of the third constant speed oil cylinder 23 moves downwards, the pressure of the lower cavity of the third constant speed oil cylinder 23 rises, hydraulic oil is pressed into the upper cavity of the first constant speed oil cylinder 21 from the oil inlet of the third constant speed oil cylinder 23, and the piston rod of the first constant speed oil cylinder 21 moves downwards; meanwhile, as the piston rod of the second constant speed cylinder 22 moves downward, the pressure of the lower cavity of the second constant speed cylinder 22 rises, hydraulic oil is pressed into the upper cavity of the fourth constant speed cylinder 24 from the oil inlet of the second constant speed cylinder 22, and the piston rod of the fourth constant speed cylinder 24 moves downward.
And 3, hydraulic oil in the lower cavity of the first constant-speed oil cylinder 21 and the lower cavity of the fourth constant-speed oil cylinder 24 flows back to the oil tank, and the plug body 6 descends under the driving of the constant-speed oil cylinders:
along with the downward movement of the piston rod of the first constant-speed oil cylinder 21, hydraulic oil in the lower cavity of the first constant-speed oil cylinder 21 flows into an oil port A of the J-shaped three-position four-way electromagnetic directional valve 8 from an A1 branch through the first one-way speed regulating valve 11 and flows back to an oil tank through an oil port T, so that the synchronous descending movement of the first constant-speed oil cylinder 21 and the third constant-speed oil cylinder 23 is realized; meanwhile, as the piston rod of the fourth constant-speed cylinder 24 moves downward, hydraulic oil in the lower cavity of the fourth constant-speed cylinder 24 flows into the oil port a of the J-shaped three-position four-way electromagnetic directional valve 8 through the branch a2 and flows back to the oil tank through the oil port T, so that synchronous descending movement of the second constant-speed cylinder 22 and the fourth constant-speed cylinder 24 is realized. Therefore, the plug body 6 is driven by the first constant-speed oil cylinder 21, the third constant-speed oil cylinder 23, the second constant-speed oil cylinder 22 and the fourth constant-speed oil cylinder 24 to descend stably.
Further, in order to make things convenient for system debugging and the elimination that the device leads to two constant speed hydro-cylinder piston rod synchronous errors of series connection because the leakage of series circuit (for example, the constant speed hydro-cylinder leaks the circumstances such as), the embodiment of the utility model provides a be equipped with first Y type tribit four-way electromagnetic directional valve 9 and first liquid accuse check valve 13 in first series circuit, be equipped with second Y type tribit four-way electromagnetic directional valve 10 and second liquid accuse check valve 14 in the second series circuit, after a constant speed hydro-cylinder reaches the stroke end point in the return circuit, trigger travel switch for the coil of Y type tribit four-way electromagnetic directional valve is electrified, and pressure oil mends oil and arranges oil to the series circuit through Y type tribit four-way electromagnetic directional valve, and then realizes the preliminary filling of series circuit hydraulic oil and the elimination of series connection constant speed hydro-cylinder position error. Travel switches are arranged at the upper end point and the lower end point of the travel of the constant-speed oil cylinder and are used for controlling the power on and off of the first Y-shaped three-position four-way electromagnetic reversing valve 9 and the second Y-shaped three-position four-way electromagnetic reversing valve 10.
Specifically, taking the first serial circuit as an example (the second serial circuit is the same as the first serial circuit), when the plug body descends, if the third constant velocity oil cylinder 23 reaches the stroke end point first, the third lower stroke switch S-3 'is triggered, so that the coil 3Y of the first Y-shaped three-position four-way electromagnetic directional valve 9 is powered on, the pressure oil flows in through the P oil port of the first Y-shaped three-position four-way electromagnetic directional valve 9, the a oil port flows out, the first hydraulic control one-way valve 13 is communicated with the serial oil cavity under the action of the pressure oil, the pressure oil enters the upper cavity of the first constant velocity oil cylinder 21, so that the first constant velocity oil cylinder 21 continues to descend to the stroke end point, the first lower stroke switch S-1' is triggered, and the 3Y of the first Y-shaped three-position four-way electromagnetic directional valve 9 is powered off. If the first constant-speed oil cylinder 21 reaches the stroke end point first, the first lower stroke switch S-1 'is triggered, the coil 4Y of the first Y-shaped three-position four-way electromagnetic reversing valve 9 is electrified, the pressure oil is communicated with the control oil way of the first hydraulic control one-way valve 13, the first hydraulic control one-way valve 13 is conducted with the series oil cavity in the reverse direction, the hydraulic oil in the lower cavity of the third constant-speed oil cylinder 23 returns to the oil tank through the first hydraulic control one-way valve 13 and the first Y-shaped three-position four-way electromagnetic reversing valve 9, the third constant-speed oil cylinder 23 continues to descend to the stroke end point, the stroke switch S-3' is triggered, and the 4Y of the first Y-shaped three-position four-way electromagnetic reversing valve 9 is powered off, so that accumulated errors are eliminated.
To sum up, the embodiment of the utility model provides a pair of hot isostatic pressing machine cock body elevating gear, elevating gear adopt four constant velocity hydro-cylinders to promote the cock body in step, and cock body lift centering precision is high, is difficult for receiving the damage when cock body sealing washer business turn over barrel, extension sealing washer life effectively reduces to the barrel sealing area fish tail dangerous. The plug body is driven by four constant-speed oil cylinders to synchronously lift, and the plug body lifting device has good stress condition, stable operation and safe and reliable work.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A plug body lifting device of a hot isostatic pressing machine is characterized by comprising a constant-speed oil cylinder (2), a three-position four-way electromagnetic reversing valve, a one-way speed regulating valve and a hydraulic control one-way valve;
the cylinder body of the constant-speed oil cylinder (2) is fixedly connected with a frame (3) of the hot isostatic pressing machine, the lower end of a piston rod of the constant-speed oil cylinder (2) is connected with a plug body (6) of the hot isostatic pressing machine, and the constant-speed oil cylinders (2) are distributed along the circumferential direction of the plug body (6).
2. The plug body lifting device for hot isostatic pressing machines according to claim 1, wherein the constant velocity cylinders (2) comprise a first constant velocity cylinder (21), a second constant velocity cylinder (22), a third constant velocity cylinder (23) and a fourth constant velocity cylinder (24) distributed along the circumferential direction of the plug body (6).
3. The plug body lifting device of the hot isostatic press according to claim 2, wherein an oil outlet of the first constant velocity cylinder (21) is communicated with an oil inlet of a third constant velocity cylinder (23) to form a first series oil chamber; an oil outlet of the fourth constant-speed oil cylinder (24) is communicated with an oil inlet of the second constant-speed oil cylinder (22) to form a second serial oil chamber.
4. The plug body lifter device according to claim 1, wherein the three-position four-way electromagnetic directional valve comprises a J-type three-position four-way electromagnetic directional valve (8), a first Y-type three-position four-way electromagnetic directional valve (9) and a second Y-type three-position four-way electromagnetic directional valve (10).
5. The plug body lifting device for the hot isostatic pressing machine according to claim 4, wherein each of the J-shaped three-position four-way electromagnetic directional valve (8), the first Y-shaped three-position four-way electromagnetic directional valve (9) and the second Y-shaped three-position four-way electromagnetic directional valve (10) comprises P, T, A and B four oil ports, the P oil port represents an oil inlet, the T oil port represents an oil return port, and the A oil port and the B oil port represent working oil ports; and a P oil port of the J-shaped three-position four-way electromagnetic directional valve (8) is connected with a hydraulic pump, and a T oil port is connected with an oil tank.
6. The plug body lifting device for the hot isostatic pressing machine according to claim 5, wherein the oil path of the outlet of the oil port A is divided into branches A1 and A2, and the oil path of the outlet of the oil port B is divided into branches B1 and B2; the A1 branch is connected with an oil inlet of the first constant-speed oil cylinder (21), and the A2 branch is connected with an oil inlet of the fourth constant-speed oil cylinder (24); the branch B1 is connected with an oil outlet of a third constant speed oil cylinder (23), and the branch B2 is connected with an oil outlet of a second constant speed oil cylinder (22).
7. The plug lifting device according to claim 6, wherein the one-way speed valves comprise a first one-way speed valve (11) and a second one-way speed valve (12), the first one-way speed valve (11) being located on branch A1, and the second one-way speed valve (12) being located on branch B1.
8. The plug body lifter device according to claim 4, characterized in that the first Y-shaped three-position four-way solenoid directional valve (9) is located in a first series oil chamber and the second Y-shaped three-position four-way solenoid directional valve (10) is located in a second series oil chamber.
9. The plug lifting device according to claim 8, wherein the pilot operated check valve comprises a first pilot operated check valve (13) and a second pilot operated check valve (14).
10. The plug body lifting device according to claim 9, wherein the first pilot operated check valve (13) is located in a first series oil chamber and the second pilot operated check valve (14) is located in a second series oil chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022450450.4U CN214118614U (en) | 2020-10-29 | 2020-10-29 | Plug body lifting device of hot isostatic pressing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022450450.4U CN214118614U (en) | 2020-10-29 | 2020-10-29 | Plug body lifting device of hot isostatic pressing machine |
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| Publication Number | Publication Date |
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| CN214118614U true CN214118614U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022450450.4U Active CN214118614U (en) | 2020-10-29 | 2020-10-29 | Plug body lifting device of hot isostatic pressing machine |
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| Country | Link |
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| CN (1) | CN214118614U (en) |
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2020
- 2020-10-29 CN CN202022450450.4U patent/CN214118614U/en active Active
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