阅读说明：本技术 一种带内置线性位移传感器的近程保压高压重型液压缸 (Short-range pressure-maintaining high-pressure heavy hydraulic cylinder with built-in linear displacement sensor ) 是由 彭军 于 2020-12-09 设计创作，主要内容包括：本发明公开的属于液压缸技术领域,具体为一种带内置线性位移传感器的近程保压高压重型液压缸,包括缸体、缸头、上缸盖、缸底、下缸盖、活塞杆、线性位移传感器与控制阀块,所述缸头位于缸体内上方,所述缸头内纵向开设有活动槽一,所述活塞杆插设在活动槽一中,所述活塞杆底部连接有活塞,所述活塞杆与活塞内中部均纵向开设有活动槽二,所述缸体内底部纵向开设有螺槽一,所述缸底内纵向开设有与螺槽一相匹配的螺槽二,本发明将线性位移传感器的波导杆安装在内部,占用空间小,方便使用,保证了液压缸的工作精度的同时避免线性位移传感器受到环境的影响,结构简单,在需要对波导杆或磁环进行更换维修时,能够快速拆解,提高了维修效率。(The invention discloses a short-range pressure-maintaining high-pressure heavy hydraulic cylinder with a built-in linear displacement sensor, which belongs to the technical field of hydraulic cylinders and comprises a cylinder body, a cylinder head, an upper cylinder cover, a cylinder bottom, a lower cylinder cover, a piston rod, a linear displacement sensor and a control valve block, wherein the cylinder head is positioned above the cylinder body, a first movable groove is longitudinally formed in the cylinder head, the piston rod is inserted in the first movable groove, the bottom of the piston rod is connected with a piston, a second movable groove is longitudinally formed in the middle parts of the piston rod and the piston, a first screw groove is longitudinally formed in the bottom of the cylinder body, and a second screw groove matched with the first screw groove is longitudinally formed in the cylinder bottom. Simple structure when needs change the maintenance to waveguide pole or magnetic ring, can disassemble fast, has improved maintenance efficiency.)

1. The utility model provides a heavy pneumatic cylinder of short range pressurize high pressure of built-in linear displacement sensor in area, includes cylinder body (1), cylinder head (3), goes up cylinder cap (2), cylinder end (25), lower cylinder cap (14), piston rod (4), linear displacement sensor (15) and control valve piece (10), its characterized in that: the cylinder head (3) is positioned above the inner portion of the cylinder body (1), a first movable groove is longitudinally formed in the cylinder head (3), the piston rod (4) is inserted into the first movable groove, the bottom of the piston rod (4) is connected with a piston (12), a second movable groove (17) is longitudinally formed in the middle portions of the piston rod (4) and the piston (12), a first screw groove is longitudinally formed in the inner bottom of the cylinder body (1), a second screw groove matched with the first screw groove is longitudinally formed in the cylinder bottom (25), a bolt (24) is screwed in the second screw groove and the first screw groove, a mounting groove is longitudinally formed in the middle portion of the cylinder bottom (25), the linear displacement sensor (15) is mounted at the bottom of the cylinder bottom (25), a wave guide rod (16) is connected to the top of the linear displacement sensor (15), and the wave guide rod (16) longitudinally penetrates through the mounting groove and is inserted into the second movable groove (17), the bottom has transversely seted up the magnetic ring groove in activity groove two (17), install magnetic ring (18) in the magnetic ring groove, the outer wall at wave guide pole (16) is established in magnetic ring (18) cover, cylinder body (1) outer wall bottom all is equipped with screw thread one (26) with jar bottom (25) outer wall, cylinder cap (14) inner wall is seted up down with screw thread one (26) assorted spiral shell groove three, cylinder cap (14) spiro union is at the outer wall of cylinder body (1) bottom and jar bottom down.

2. The short-range pressure-maintaining high-pressure heavy hydraulic cylinder with the built-in linear displacement sensor according to claim 1, characterized in that: the utility model discloses a wave guide pole, including lower cylinder cap (14), linear displacement sensor (15) are equipped with the sealing ring, vertically seted up activity groove three in lower cylinder cap (14), linear displacement sensor (15) are located activity groove three, the inner wall of mounting groove is equipped with the sealing ring, the inner wall of sealing ring, outer wall laminate with wave guide pole (16) outer wall, mounting groove inner wall respectively.

3. The short-range pressure-maintaining high-pressure heavy hydraulic cylinder with the built-in linear displacement sensor according to claim 1, characterized in that: control valve block (10) are installed in cylinder body (1) right side wall, cylinder body (1) right side wall inside top and below are equipped with inlet (8), inlet two (11) respectively, control valve block (10) and inlet two (11) intercommunication, control valve block (10) and inlet one (8) are through pipeline (9) intercommunication.

4. The short-range pressure-maintaining high-pressure heavy hydraulic cylinder with the built-in linear displacement sensor according to claim 1, characterized in that: seal groove one has transversely been seted up to piston (12) outer wall, install sealing washer one (13) in the seal groove one, dust-proof groove, guide way and seal groove two have transversely been seted up by last to lower to an inner wall of movable groove, install dust ring (7), guide ring (6) and sealing washer two (5) in dust-proof groove, guide way and the seal groove two respectively.

5. The short-range pressure-maintaining high-pressure heavy hydraulic cylinder with the built-in linear displacement sensor according to claim 1, characterized in that: the cylinder body (1) top has vertically seted up the slot, activity groove four (22) have transversely been seted up at cylinder body (1) top, cylinder end (3) top left and right sides all is equipped with slot assorted inserted block, the inserted block is inserted and is established in the slot, activity groove five (19) have transversely been seted up in the inserted block, be equipped with slide (21) and spring (20) in activity groove five (19), slide (21) traversing activity groove five (19) joint is in activity groove four (22), the both ends of spring (20) respectively with slide (21), activity groove five (19) inner wall connection.

6. The short-range pressure-maintaining high-pressure heavy hydraulic cylinder with the built-in linear displacement sensor according to claim 1, characterized in that: the outer wall of the cylinder head (3) and the top of the outer wall of the cylinder body (1) are both provided with a second thread (23), the inner wall of the upper cylinder cover (2) is provided with a fourth thread groove matched with the second thread (23), and the upper cylinder cover (2) is in threaded connection with the outer wall of the cylinder head (3) and the top of the cylinder body (1).

Technical Field

The invention relates to the technical field of hydraulic cylinders, in particular to a short-range pressure-maintaining high-pressure heavy hydraulic cylinder with a built-in linear displacement sensor.

Background

The hydraulic cylinder is a device for converting hydraulic energy into mechanical energy to enable the machine to realize reciprocating linear motion or swing, and the hydraulic cylinder is stable in transmission work and high in reliability. Because the complexity of the actual working requirement is larger and larger, the requirement of the control precision of the hydraulic cylinder is higher and higher, the existing common hydraulic cylinder can not completely meet the production requirement, and the production efficiency is lower; and the safety protection function is not provided, and the safety is poor. In order to meet the actual requirements, a linear displacement sensor is usually mounted on a common hydraulic cylinder for monitoring the operating position and speed of a piston which reciprocates, so as to realize automatic control. Because linear displacement sensor sets up outside the pneumatic cylinder, not only takes up space, easily receives surrounding operational environment's influence moreover, when linear displacement sensor's waveguide pole goes wrong, needs disassemble the pneumatic cylinder, and current pneumatic cylinder structure is complicated, disassembles the trouble to it is not convenient enough to make the maintenance.

Disclosure of Invention

The invention aims to provide a short-range pressure-maintaining high-pressure heavy hydraulic cylinder with a built-in linear displacement sensor, and aims to solve the problems that the linear displacement sensor provided in the background technology is arranged outside the hydraulic cylinder, occupies space, is easily influenced by the surrounding working environment, has a complex structure, is troublesome to disassemble and is inconvenient to maintain.

In order to achieve the purpose, the invention provides the following technical scheme: a short-range pressure-maintaining high-pressure heavy hydraulic cylinder with a built-in linear displacement sensor comprises a cylinder body, a cylinder head, an upper cylinder cover, a cylinder bottom, a lower cylinder cover, a piston rod, the linear displacement sensor and a control valve block, wherein the cylinder head is positioned above the cylinder body, a first movable groove is longitudinally formed in the cylinder head, the piston rod is inserted in the first movable groove, the bottom of the piston rod is connected with a piston, a second movable groove is longitudinally formed in the middle parts of the piston rod and the piston, a first spiral groove is longitudinally formed in the bottom of the cylinder body, a second spiral groove matched with the first spiral groove is longitudinally formed in the cylinder bottom, a bolt is screwed in the second spiral groove and the first spiral groove, a mounting groove is longitudinally formed in the middle part of the cylinder bottom, the linear displacement sensor is mounted at the bottom of the cylinder bottom, the top of the linear displacement sensor is connected with a waveguide rod, the bottom transversely has seted up the magnetic ring groove in the activity groove two, install the magnetic ring in the magnetic ring groove, the outer wall at wave guide pole is established to the magnetic ring cover, cylinder body outer wall bottom all is equipped with screw thread one with the cylinder bottom outer wall, lower cylinder head inner wall is seted up with screw thread one assorted spiral shell groove three, lower cylinder head spiro union is at the outer wall of cylinder body bottom and cylinder bottom.

Preferably, a third movable groove is longitudinally formed in the lower cylinder cover, the linear displacement sensor is located in the third movable groove, a sealing ring is arranged on the inner wall of the mounting groove, and the inner wall and the outer wall of the sealing ring are respectively attached to the outer wall of the waveguide rod and the inner wall of the mounting groove.

Preferably, the control valve block is installed on the right side wall of the cylinder body, a first liquid inlet and a second liquid inlet are respectively arranged above and below the inner side wall of the right side wall of the cylinder body, the control valve block is communicated with the second liquid inlet, and the control valve block is communicated with the first liquid inlet through a pipeline.

Preferably, a first sealing groove is transversely formed in the outer wall of the piston, a first sealing ring is installed in the first sealing groove, a second dust-proof groove, a guide groove and a second sealing groove are transversely formed in the inner wall of the first movable groove from top to bottom, and a second dust-proof ring, a guide ring and a second sealing ring are respectively installed in the second dust-proof groove, the second guide groove and the second sealing groove.

Preferably, the cylinder body top has vertically seted up the slot, movable groove four has transversely been seted up at the cylinder body top, the cylinder head top left and right sides all is equipped with slot assorted inserted block, the inserted block is inserted and is established in the slot, movable groove five has transversely been seted up in the inserted block, be equipped with slide and spring in the movable groove five, the slide transversely passes movable groove five joint in movable groove four, the both ends of spring respectively with slide, five inner wall connections in movable groove.

Preferably, the second threads are arranged on the outer wall of the cylinder head and the top of the outer wall of the cylinder body, the fourth thread groove matched with the second threads is formed in the inner wall of the upper cylinder cover, and the upper cylinder cover is screwed on the top of the cylinder body and the outer wall of the cylinder head.

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

1) the waveguide rod of the linear displacement sensor is arranged inside the hydraulic cylinder, so that the hydraulic cylinder is small in occupied space and convenient to use, the working precision of the hydraulic cylinder is ensured, and the linear displacement sensor is prevented from being influenced by the environment.

2) The cylinder head is clamped with the top of the cylinder body, the cylinder bottom is in threaded connection with the bottom of the cylinder body, and meanwhile the upper cylinder cover and the lower cylinder cover respectively compress and seal the cylinder head and the cylinder bottom.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a magnetic ring structure according to the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 1;

fig. 4 is an enlarged schematic view of B in fig. 1.

In the figure: 1 cylinder body, 2 upper cylinder covers, 3 cylinder heads, 4 piston rods, 5 sealing rings II, 6 guide rings, 7 dust-proof rings, 8 liquid inlet I, 9 pipelines, 10 control valve blocks, 11 liquid inlet II, 12 pistons, 13 sealing rings I, 14 lower cylinder covers, 15 linear displacement sensors, 16 wave guide rods, 17 movable grooves II, 18 magnetic rings, 19 movable grooves V, 20 springs, 21 sliding seats, 22 movable grooves IV, 23 threads II, 24 bolts, 25 cylinder bottoms and 26 threads I.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-4, the present invention provides a technical solution: a short-range pressure-maintaining high-pressure heavy hydraulic cylinder with a built-in linear displacement sensor comprises a cylinder body 1, a cylinder head 3, an upper cylinder cover 2, a cylinder bottom 25, a lower cylinder cover 14, a piston rod 4, a linear displacement sensor 15 and a control valve block 10, wherein the cylinder head 3 is positioned above the inside of the cylinder body 1, a first movable groove is longitudinally formed in the cylinder head 3, the piston rod 4 is inserted in the first movable groove, the bottom of the piston rod 4 is connected with a piston 12, the middle parts of the piston rod 4 and the piston 12 are both longitudinally provided with a second movable groove 17, the bottom of the cylinder body 1 is longitudinally provided with a first spiral groove, the inside of the cylinder bottom 25 is longitudinally provided with a second spiral groove matched with the first spiral groove, the second spiral groove and the first spiral groove are in threaded connection with a bolt 24, the middle part of the inside of the cylinder bottom 25 is longitudinally provided with a mounting groove, the linear displacement sensor 15 is mounted, the wave guide rod 16 longitudinally penetrates through the installation groove to be inserted into the movable groove II 17, a magnetic ring groove is transversely formed in the bottom of the movable groove II 17, a magnetic ring 18 is installed in the magnetic ring groove, the magnetic ring 18 is sleeved on the outer wall of the wave guide rod 16, the piston 12 moves up and down under the action of hydraulic oil to drive the magnetic ring 18 to move on the wave guide rod 16, the linear displacement sensor 15 utilizes a strain pulse signal generated by intersection of two different magnetic fields to calculate the accurate position and the running speed of the motion of the piston rod 4, threads I26 are respectively arranged at the bottom of the outer wall of the cylinder body 1 and the outer wall of the cylinder bottom 25, a thread groove III matched with the threads I26 is formed in the inner wall of the lower cylinder cover 14, the lower cylinder cover 14 is screwed on the outer wall of the bottom of the cylinder body 1 and the outer wall of the cylinder bottom, the lower cylinder cover 14 is screwed anticlockwise, the lower, the cylinder bottom 25 can be separated from the bottom of the cylinder body 1, so that the waveguide rod 16 and the magnetic ring 18 can be repaired and replaced.

Wherein, vertically the activity groove three has been seted up in lower cylinder cap 14, linear displacement sensor 15 is arranged in the activity groove three, the inner wall of mounting groove is equipped with the sealing ring, inner wall, the outer wall of sealing ring laminate with 16 outer walls of wave guide pole, mounting groove inner wall respectively, prevent that the condition of revealing from appearing in hydraulic oil.

Control valve block 10 is installed at 1 right side wall of cylinder body, the top is equipped with inlet one 8, inlet two 11 respectively with the below in the 1 right side wall of cylinder body, control valve block 10 and two 11 intercommunications of inlet, control valve block 10 and inlet one 8 are through pipeline 9 intercommunication, and control valve block 10 can control the pressure that hydraulic oil got into inlet one 8, inlet two 11.

Seal groove one has transversely been seted up to 12 outer walls of piston, install sealing washer 13 in the seal groove one, dust-proof groove, guide way and seal groove two have transversely been seted up by last under to an inner wall of movable groove, install dust ring 7, guide ring 6 and sealing washer two 5 in dust-proof groove, guide way and the seal groove two respectively, dust ring 7 prevents the entering of dust, and guide ring 6 plays the effect of direction to piston rod 4, and sealing washer two 5 prevent that hydraulic oil from revealing, plays sealed effect.

The improved cylinder is characterized in that a slot is longitudinally formed in the top of the cylinder body 1, a movable groove four 22 is transversely formed in the top of the cylinder body 1, inserting blocks matched with the slot are arranged on the left side and the right side of the top of the cylinder head 3 respectively, the inserting blocks are inserted into the slot, a movable groove five 19 is transversely formed in each inserting block, a sliding seat 21 and a spring 20 are arranged in the movable groove five 19, the sliding seat 21 transversely penetrates through the movable groove five 19 and is clamped in the movable groove four 22, and two ends of the spring 20 are respectively connected with the inner walls of the sliding seat 21 and the movable groove five 19.

3 outer walls of cylinder head and 1 outer wall top of cylinder body all are equipped with two 23 of screw threads, 2 inner walls of upper cylinder cap offer with two 23 assorted thread grooves four of screw threads, 2 spiro unions of upper cylinder cap press slide 21 at 1 top of cylinder body and 3 outer walls of cylinder head for spring 20 contracts, and slide 21 shifts out movable groove four 22, can take out the inserted block of cylinder head 3 from the slot at 1 top of cylinder body, accomplishes disassembling to cylinder head 3.

The working principle is as follows: the control valve block 10 can control the pressure of hydraulic oil entering the liquid inlet I8 and the liquid inlet II 11, the piston 12 moves up and down under the action of the hydraulic oil to drive the magnetic ring 18 to move on the waveguide rod 16, the linear displacement sensor 15 calculates the accurate position and the operation speed of the movement of the piston rod 4 by using a strain pulse signal generated by the intersection of two different magnetic fields, the lower cylinder cover 14 is screwed anticlockwise, the lower cylinder cover 14 can be unscrewed from the bottom of the cylinder body 1 and the outer wall of the cylinder bottom 25, the bolt 24 is unscrewed, the cylinder bottom 25 can be separated from the bottom of the cylinder body 1, so that the waveguide rod 16 and the magnetic ring 18 can be maintained and replaced, the upper cylinder cover 2 is screwed anticlockwise, the upper cylinder cover 2 can be unscrewed from the top of the cylinder body 1 and the outer wall of the cylinder head 3, the slide base 21 is pressed to shrink the spring 20, the slide base 21 moves out of the movable groove IV 22, so that an insert, the disassembly of the cylinder head 3 is completed.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.