CN217735188U - Integral type hydraulic pressure hinge - Google Patents

Abstract

The utility model discloses an integrated hydraulic hinge, which comprises a first leaf plate, a second leaf plate and a damping oil cylinder, wherein the damping oil cylinder comprises a cylinder barrel, and a guide plug, a piston, a rotating shaft and a compression spring which are arranged in the cylinder barrel; the guide plug is positioned at the lower end of the cylinder barrel and is in sealing fit with the cylinder barrel; the upper end of the guide rod is provided with a guide cavity, the piston is in axial linear sliding fit with the guide cavity, the rotating shaft is in transmission with the piston screw rod, the upper end of the cylinder barrel is in sealing fit with the outer end of the rotating shaft, the upper end of the rotating shaft extends out of the cylinder barrel and is fixedly connected with the first page plate, and the compression spring is pressed at the upper end of the piston; the second leaf plate is fixedly connected with the cylinder barrel. This kind of integral type hydraulic pressure hinge's direction stopper has the function of shutoff cylinder and piston direction simultaneously, and direction stopper integrated processing, the processing production is easy, and the material loss is little, and is with low costs, and in addition, one step of installation targets in place during the installation, and assembly efficiency is higher.

Description

Integral type hydraulic pressure hinge

Technical Field

The utility model relates to a hydraulic pressure hinge, especially an integral type hydraulic pressure hinge.

Background

As shown in fig. 18, the conventional integrated hydraulic hinge includes a first leaf plate, a second leaf plate, and a damping cylinder 90, where the damping cylinder includes a cylinder barrel 1, a plug shaft 3, a guide sleeve 5, a piston 6, a rotating shaft 2, and a compression spring 4, the piston separates the inside of the cylinder barrel into an upper cavity and a lower cavity, the piston is further provided with a first oil passing hole and a second oil passing hole for communicating the upper cavity and the lower cavity, the second oil passing hole is provided with a check valve, the guide sleeve is fixedly disposed in the cylinder barrel, the inner wall of the guide sleeve is axially provided with a guide groove, the outer wall of the piston is provided with a guide rib, and the guide rib is in vertical linear sliding fit with the guide groove; the rotating shaft is in transmission with the piston screw rod, the upper end of the rotating shaft extends out of the upper end of the cylinder barrel, and the compression spring is pressed at the upper end of the piston; the first leaf plate and the second leaf plate are respectively and fixedly connected with the rotating shaft and the cylinder barrel. The plug shaft is arranged at the lower end of the cylinder barrel and is in sealing fit with the cylinder barrel. The uide bushing processes respectively with the stopper axle and installs in this structure, and the uide bushing all needs independent processing with the face that the stopper axle is relative, and the cost is higher, and in addition, the uide bushing needs to use the axle stopper to install as the benchmark, adorns the axle stopper earlier promptly, and the repacking uide bushing, its installation procedure is loaded down with trivial details, and assembly efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an integral type hydraulic hinge that simple structure is reasonable, simple to operate, processing cost are low.

The purpose of the utility model is realized like this:

the utility model provides an integral type hydraulic hinge, includes first page or leaf board, second page or leaf board and damping cylinder, its characterized in that: the damping oil cylinder comprises a cylinder barrel, a guide plug, a piston, a rotating shaft and a compression spring, wherein the guide plug, the piston, the rotating shaft and the compression spring are arranged in the cylinder barrel; the guide plug is positioned at the lower end of the cylinder barrel and is in sealing fit with the cylinder barrel; the upper end of the guide rod is provided with a guide cavity, the piston is in axial linear sliding fit with the guide cavity, the rotating shaft is in transmission with the piston screw rod, the upper end of the cylinder barrel is in sealing fit with the outer end of the rotating shaft, the upper end of the rotating shaft extends out of the cylinder barrel and is fixedly connected with the first page plate, and the compression spring is pressed at the upper end of the piston; the second leaf plate is fixedly connected with the cylinder barrel.

The purpose of the utility model can also adopt the following technical measures to solve:

as a more specific scheme, the upper end and the lower end of the periphery of the guide plug are respectively provided with an axial pit groove and a first annular groove, the axial pit groove is tightly matched with the cylinder barrel in a clamping manner, and the first annular groove is provided with a first sealing ring which is matched with the inner wall of the cylinder barrel in a sealing manner; the periphery of the guide plug is in spacing fit with the inner wall of the cylinder barrel through a spacing step.

As a further scheme, a guide groove is axially formed in the inner wall of the guide cavity, a guide convex rib is arranged on the outer wall of the piston, and the guide convex rib is in axial linear sliding fit with the guide groove.

As a further scheme, the piston divides the interior of the cylinder barrel into an upper cavity and a lower cavity, the upper end of the piston is provided with a containing cavity, the bottom of the containing cavity is provided with a bottom plate, the bottom plate is also provided with a first oil passing hole and a second oil passing hole which are used for communicating the upper cavity with the lower cavity, and the second oil passing hole is provided with a one-way valve; an O-shaped sealing ring is arranged between the periphery of the piston and the inner wall of the cylinder barrel; the side wall of the accommodating cavity is provided with a positioning hole, the lower end of the rotating shaft is provided with a spiral groove, a first ball is arranged in the positioning hole, and the first ball is embedded in the spiral groove. The first ball and the spiral groove are matched to form a ball screw to move, and the rotation is smoother.

As a further scheme, the top surface of the rotating shaft is provided with an upper screw hole along the axis direction of the rotating shaft, the rotating shaft is provided with a sliding chute corresponding to the upper cavity, the sliding chute is communicated with the upper screw hole and extends along the axis direction of the rotating shaft, a transverse pin is arranged in the sliding chute, and the upper end of the compression spring is abutted against the bottom of the transverse pin; a force adjusting screw is also arranged in the upper screw hole, and the lower end of the force adjusting screw is used for pressing and contacting the cross pin; and a second annular groove is formed in the periphery of the force adjusting screw, and a second sealing ring is arranged on the second annular groove and is in sealing fit with the upper screw hole. The transverse pin can be controlled to move downwards by rotating the force adjusting screw so as to change the compression state of the compression spring, namely, the elastic force of the spring.

As a further scheme, a plug shaft is integrally arranged at the lower end of the guide plug and extends out of the cylinder barrel; an upper sleeve and a lower sleeve are arranged on one side of the first leaf plate, the upper sleeve and the lower sleeve are separated, the upper end and the lower end of the upper sleeve are respectively sleeved outside the upper end of the rotating shaft and the cylinder barrel, the upper sleeve is matched with the rotating shaft through a tightening sleeve piece, the upper end of the cylinder barrel is arranged into a reducing section corresponding to the upper sleeve and is in clearance fit with the upper sleeve, and the lower sleeve is matched with the lower end of the plug shaft through a roller bearing; and a middle sleeve is arranged on one side of the second leaf plate and is positioned between the upper sleeve and the lower sleeve, the middle sleeve is sleeved outside the cylinder barrel and is fixedly matched with the cylinder barrel, an upper plane bearing is arranged between the middle sleeve and the upper sleeve, and a lower plane bearing is arranged between the middle sleeve and the lower sleeve.

As a further scheme, the upper plane bearing and the lower plane bearing are both plane ball bearings and comprise ball seats, ball covers and a plurality of second balls, the ball seats are annular, the upper surfaces of the ball seats are provided with lower annular arc grooves, the second balls are arranged on the lower annular arc grooves, the outer sides of the ball seats upwards extend to form surrounding plates, the inner sides of the ball seats downwards extend to form plug bushes, and the plug bushes are used for being matched with pipe orifices of the middle sleeves in a plug-in manner; the ball lid is the annular, and the bottom surface of ball lid is equipped with annular circular arc recess and the cooperation of second ball, and the upper end of bounding wall is equipped with the inside turn-ups, and the inside turn-ups is spacing with the periphery of ball lid, and the top surface protrusion of ball lid is outside the upper end of bounding wall.

As a further scheme, a lower screw hole is formed in the center of the plug shaft, a speed regulating screw is in threaded connection with the lower screw hole, a speed regulating valve needle is connected to the upper end of the speed regulating screw, a narrowing section is formed in the speed regulating valve needle, and the speed regulating valve needle is inserted into the first oil passing hole; the check valve is used for limiting or slowing the damping oil in the lower cavity from flowing to the upper cavity.

As a further scheme, the narrowing section of the speed regulating valve needle comprises an upper narrowing section and a lower narrowing section, and a gap between the upper narrowing section and the first oil passing hole is smaller than a gap between the lower narrowing section and the first oil passing hole; the upper end of the speed regulating screw is provided with a concave cavity, and the lower end of the speed regulating valve needle is wrapped in the concave cavity and is in running fit with the concave cavity.

As a further scheme, the tightening sleeve piece comprises a lock sleeve and a key, the cross sections of the inner side of the lock sleeve and the upper end of the rotating shaft are both in a D shape and are in sleeve joint transmission fit with each other, a key groove is further formed in the inner side of the lock sleeve, and the key is inserted into the key groove and is tightly pressed between the rotating shaft and the key groove; or, tight suit includes lock tube and holding screw, the inboard of lock tube with the upper end cross section of pivot all is the D type, and cup joint transmission fit each other, and the periphery of lock tube corresponds the lateral plane of pivot and is equipped with the screw, and the holding screw passes the lateral plane crimping of screw and pivot.

As a further scheme, a ball bearing and a Y-shaped sealing ring are sequentially arranged outside the outer end of the rotating shaft from top to bottom, the rotating shaft is further matched with the inner wall of the cylinder barrel through the ball bearing and the Y-shaped sealing ring, the ball bearing comprises an outer ring, an end cover and a plurality of steel balls, the steel balls are annularly distributed on the inner wall of the outer ring, the end cover is arranged at the upper ends of the outer ring and the steel balls, an annular groove is further formed in the upper end of the rotating shaft, and the steel balls are further matched with the annular groove; the inner side of the upper end of the cylinder barrel is provided with a limiting step, and the bottom surface of the outer ring of the ball bearing is connected to the limiting step.

The utility model has the advantages as follows:

this kind of integral type hydraulic pressure hinge's direction stopper has the function of shutoff cylinder and piston direction simultaneously, and direction stopper integrated processing, the processing production is easy, and the material loss is little, and is with low costs, and in addition, one step of installation targets in place during the installation, and assembly efficiency is higher.

Drawings

Fig. 1 is an exploded schematic view of an embodiment of the present invention.

Fig. 2 is the angle structure schematic diagram after the assembly of the utility model.

Fig. 3 is another angle structure diagram of the utility model after assembly.

Fig. 4 is an angle decomposition structure schematic diagram of the middle damping cylinder of the present invention.

Fig. 5 is another angle decomposition structure schematic diagram of the middle damping cylinder of the present invention.

Fig. 6 is a schematic side view of the present invention.

FIG. 7 isbase:Sub>A schematic sectional view A-A of FIG. 6.

Fig. 8 is an enlarged structural schematic diagram of the damping cylinder in fig. 7.

Fig. 9 is a structural schematic diagram of the energy storage state (opening state) of the damping cylinder in fig. 8.

Fig. 10 is a structural schematic diagram of a damping release state (front-section closed state) of the damping cylinder in fig. 8.

Fig. 11 is a schematic structural view of the damping cylinder in fig. 8 in a speed-up releasing state (a middle/rear-stage closing state).

Fig. 12 is an enlarged schematic view of fig. 11 at D.

Fig. 13 is a schematic view of a partial structure according to another embodiment of the present invention.

Fig. 14 is a schematic cross-sectional view of another embodiment of the present invention.

Fig. 15 is an enlarged schematic view of E in fig. 14.

Fig. 16 is a schematic cross-sectional view of a flat ball bearing according to another embodiment of the present invention.

Fig. 17 is an enlarged schematic view of G in fig. 16.

Fig. 18 is an exploded view of a damping cylinder in the prior art.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

referring to fig. 1 to 8, an integral type hydraulic hinge includes a first page 10, a second page 20 and a damping cylinder 90, and is characterized in that: the damping oil cylinder 90 comprises a cylinder barrel 1, a guide plug 3, a piston 6, a rotating shaft 2 and a compression spring 4, wherein the guide plug 3, the piston 6, the rotating shaft 2 and the compression spring are arranged in the cylinder barrel 1; the guide plug 3 is positioned at the lower end of the cylinder barrel 1, and the guide plug 3 is in sealing fit with the cylinder barrel 1; the upper end of the guide plug 3 is provided with a guide cavity 31, the piston 6 is in axial linear sliding fit with the guide cavity 31, the rotating shaft 2 is in screw transmission with the piston 6, the upper end of the cylinder barrel 1 is in sealing fit with the outer end of the rotating shaft 2, the upper end of the rotating shaft 2 extends out of the cylinder barrel 1 and is fixedly connected with the first leaf plate 10, and the compression spring 4 is pressed at the upper end of the piston 6; the second leaf plate 20 is fixedly connected with the cylinder barrel 1.

The upper end and the lower end of the periphery of the guide plug 3 are respectively provided with an axial pit 34 and a first annular groove, the axial pit 34 is tightly matched with the cylinder barrel 1, and the first annular groove is provided with a first sealing ring 32 which is matched with the inner wall of the cylinder barrel 1 in a sealing manner; the periphery of the guide plug 3 is in spacing fit with the inner wall of the cylinder barrel 1 through a spacing step.

The inner wall of the guide cavity 31 is axially provided with a guide groove 311, the outer wall of the piston 6 is provided with a guide convex rib 61, and the guide convex rib 61 is in axial linear sliding fit with the guide groove 311.

The piston 6 divides the interior of the cylinder barrel 1 into an upper cavity 13 and a lower cavity 14, the upper end of the piston 6 is provided with a containing cavity 64, the bottom of the containing cavity 64 is provided with a bottom plate 65, the bottom plate 65 is also provided with a first oil passing hole 66 and a second oil passing hole 67 which are used for communicating the upper cavity 13 with the lower cavity 14, and the second oil passing hole 67 is provided with a one-way valve 68; an O-shaped sealing ring 69 is arranged between the periphery of the piston 6 and the inner wall of the cylinder barrel 1; the side wall of the cavity 64 is provided with a positioning hole 62, the lower end of the rotating shaft 2 is provided with a spiral groove 22, a first ball 63 is arranged in the positioning hole 62, and the first ball 63 is embedded in the spiral groove 22. The spiral groove 22 may further be provided with a positioning concave portion corresponding to a position where the hinge is engaged with the first ball 63 in an opening and/or closing state, so as to achieve the functions of door opening and closing stopping.

Two (or more) first balls 63 may be provided, and a spiral groove 22 is provided at the lower end of the rotating shaft 2 corresponding to each first ball 63, so that the lower end of the rotating shaft 2 is more securely fitted.

An upper screw hole 27 is formed in the top surface of the rotating shaft 2 along the axis direction of the rotating shaft, a sliding groove 26 is formed in the rotating shaft 2 corresponding to the upper cavity 13, the sliding groove 26 is communicated with the upper screw hole 27 and extends along the axis direction of the rotating shaft 2, a transverse pin 21 is arranged in the sliding groove 26, and the upper end of the compression spring 4 abuts against the bottom of the transverse pin 21; a force adjusting screw 23 is also arranged in the upper screw hole 27, and the lower end of the force adjusting screw 23 is used for pressing and contacting the cross pin 21; the periphery of the force adjusting screw 23 is provided with a second annular groove 231, and the second annular groove 231 is provided with a second sealing ring 232 which is in sealing fit with the upper screw hole 27.

The outer end of the rotating shaft 2 is sequentially provided with a ball bearing 24 and a Y-shaped sealing ring 25 from top to bottom, the rotating shaft 2 is further matched with the inner wall of the cylinder barrel 1 through the ball bearing 24 and the Y-shaped sealing ring 25, the ball bearing 24 comprises an outer ring, an end cover and a plurality of steel balls, the steel balls are annularly distributed on the inner wall of the outer ring, the end cover is arranged at the upper ends of the outer ring and the steel balls, the upper end of the rotating shaft 2 is further provided with an annular groove, and the steel balls are further matched with the annular groove; the inner side of the upper end of the cylinder barrel 1 is provided with a limiting step, and the bottom surface of the outer ring of the ball bearing 24 is connected to the limiting step.

A plug shaft 33 is integrally arranged at the lower end of the guide plug 3, and the plug shaft 33 extends out of the cylinder barrel 1; an upper sleeve 101 and a lower sleeve 102 are arranged on one side of the first vane 10, the upper sleeve 101 and the lower sleeve 102 are separated, the upper end and the lower end of the upper sleeve 101 are respectively sleeved outside the upper end of the rotating shaft 2 and outside the cylinder barrel 1, the upper sleeve 101 is matched with the rotating shaft 2 through a tight sleeve, the upper end of the cylinder barrel 1 is arranged to be a reducing section 12 corresponding to the upper sleeve 101 and is in clearance fit with the upper sleeve 101, and the lower sleeve 102 is matched with the lower end of the plug shaft 33 through a roller bearing 60; a middle sleeve 201 is arranged on one side of the second leaf plate 20, the middle sleeve 201 is positioned between the upper sleeve 101 and the lower sleeve 102, the middle sleeve 201 is sleeved outside the cylinder barrel 1 and is fixedly matched with the cylinder barrel 1, an upper plane bearing 40 is arranged between the middle sleeve 201 and the upper sleeve 101, and a lower plane bearing 50 is arranged between the middle sleeve 201 and the lower sleeve 102. The cylinder barrel 1 is externally provided with a knurl 11 corresponding to the middle sleeve 201, the middle sleeve 201 is in interference fit with the knurl 11, and the middle sleeve 201 is fixedly matched with the cylinder barrel 1.

A lower screw hole 331 is formed in the center of the plug shaft 33, a speed regulating screw 71 is in threaded connection with the lower screw hole 331, the upper end of the speed regulating screw is connected with a speed regulating valve needle 7, a narrowing section is arranged on the speed regulating valve needle 7, and the speed regulating valve needle is inserted into the first oil passing hole 66; the check valve 68 is used for limiting or slowing the damping oil in the lower cavity 14 from flowing to the upper cavity 13. The inner side of the lower screw hole is also provided with an annular clamping groove, a clamping spring 332 is arranged in the annular clamping groove, and the clamping spring 332 prevents the speed adjusting screw 71 from being screwed out to leak oil.

The narrowing section of the speed regulating valve needle 7 comprises an upper narrowing section 72 and a lower narrowing section 73, and the clearance between the upper narrowing section 72 and the first oil passing hole 66 is smaller than the clearance between the lower narrowing section 73 and the first oil passing hole 66; the upper end of the speed regulating screw 71 is provided with a concave cavity 711, and the lower end of the speed regulating valve needle 7 is wrapped in the concave cavity 711 and is in rotating fit with the concave cavity 711.

Tight suit includes lock sleeve 30 and key 301, the inboard of lock sleeve 30 with the upper end cross section of pivot 2 all is the D type, and cup joints transmission fit each other, and the inboard of lock sleeve 30 still is equipped with the keyway, and key 301 inserts in the keyway, and compresses tightly between pivot 2 and keyway.

The lock sleeve 30 is also provided with an upper cover 302, the center of the upper cover 302 is provided with an opening, and the opening is provided with a dustproof cover 303; the lower end of the lower sleeve 102 is provided with a plug sleeve 70, the lower end of the plug sleeve 70 is exposed out of the lower sleeve 102 and is provided with a lower cover 80, and the lower cover 80 is provided with another opening.

The outer wall of the lock sleeve 30 is provided with insections, the lock sleeve 30 is in interference fit with the inner wall of the upper sleeve 101 of the first louver 10 through the insections, and the upper cover 302 is in tight fit with the outer wall of the lock sleeve 30. The periphery of the plug sleeve 70 is provided with a pre-tightening convex rib which is tightly matched with the inner wall of the lower sleeve 102 and the inner wall of the lower cover 80 respectively.

The first leaf 10 and the second leaf 20 are respectively used for connecting with a door frame and a door body.

The working principle is as follows: assuming that the first leaf 10 and the second leaf 20 are respectively connected with the door frame and the door body, as shown in fig. 8, the state of the damping oil cylinder when the hydraulic hinge is folded is shown; referring to fig. 9, when the door is opened, the first leaf 10 and the second leaf 20 are opened, the cylinder 1 and the rotating shaft 2 rotate relatively, the piston 6 performs a screw motion to press the compression spring 4 upwards (see arrow F), the compression spring 4 is compressed to store energy, meanwhile, when the piston 6 moves upwards, the check valve 68 is opened, most of the damping oil in the upper cavity 13 of the damping oil cylinder 90 enters the lower cavity 14 through the second oil passing hole 67, see arrow B in fig. 9, and thus resistance is reduced.

When the door is closed, the first leaf 10 and the second leaf 20 start to fold, the cylinder barrel 1 and the rotating shaft 2 rotate oppositely, the piston 6 performs lead screw motion and travels downwards (see arrow T in figures 10 and 11), and meanwhile, the compressed compression spring 4 starts to release energy; during the downward movement of the piston, the check valve 68 closes the second oil passing hole 67, and the damping oil of the lower chamber 14 can pass only through the gap between the speed adjusting needle 7 and the first oil passing hole 66, as indicated by the arrow C in fig. 10.

Since the speed regulating valve needle 7 is divided into an upper section, a middle section and a lower section, and the diameters of the sections are sequentially reduced, at the front section of closing the door, the gap between the speed regulating valve needle 7 and the first oil passing hole 66 is the smallest, the oil passing speed is the slowest, the door closing speed is the slowest, and at the middle section, the gap between the speed regulating valve needle 7 and the first oil passing hole 66 is increased, and the oil passing speed is slightly increased, as shown in fig. 11 and 12; finally, at the rear section of the door closing, the gap between the speed regulating valve needle 7 and the first oil passing hole 66 is at the maximum, and the door closing is accelerated.

The second embodiment is different from the first embodiment in that: as shown in fig. 13, the tightening member includes a locking sleeve 30 and a tightening screw 304, the inner side of the locking sleeve 30 and the cross section of the upper end of the rotating shaft 2 are both D-shaped and are in transmission fit with each other, a screw hole is formed in the periphery of the locking sleeve 30 corresponding to the side plane of the rotating shaft 2, and the tightening screw 304 penetrates through the screw hole and is in compression joint with the side plane of the rotating shaft 2.

The third embodiment is different from the first embodiment or the second embodiment in that: as shown in fig. 14 to 17, the upper flat bearing 40 and the lower flat bearing 50 are both flat ball bearings 8, each of which includes a ball seat 81, a ball cover 83 and a plurality of second balls 82, the ball seat 81 is annular, the upper surface of the ball seat 81 is provided with a lower annular arc groove 813, the second balls 82 are disposed on the lower annular arc groove 813, the outer side of the ball seat 81 extends upward to form a surrounding plate 811, the inner side of the ball seat 81 extends downward to form an insert 812, and the insert 812 is used for being inserted into and matched with the pipe orifice of the middle sleeve 201; ball lid 83 is the annular, and the bottom surface of ball lid 83 is equipped with annular circular arc recess 831 and the cooperation of second ball 82, and the upper end of bounding wall 811 is equipped with in-flanges 814, and the periphery of ball lid 83 is equipped with spacing step limit 832, and in-flanges 814 keeps off spacingly mutually with ball lid 83's spacing step limit 832, and ball lid 83's top surface protrusion is outside the upper end of bounding wall 811.

The ball seat 81, the ball cover 83 and the second balls 82 of the flat ball bearing 8 are assembled together, and the parts are not separated independently (in the first and second embodiments, the flat ball bearing is separated into a plurality of independent parts after being taken out of the hinge, so that the installation is inconvenient), and even if the parts of the hinge are separated, the flat ball bearing 8 cannot be separated, namely, the flat ball bearing 8 is suitable for being used on the detachable or non-detachable hinge.

Claims (10)

1. The utility model provides an integral type hydraulic hinge, includes first page or leaf board (10), second page or leaf board (20) and damping cylinder (90), its characterized in that: the damping oil cylinder (90) comprises a cylinder barrel (1), and a guide plug (3), a piston (6), a rotating shaft (2) and a compression spring (4) which are arranged in the cylinder barrel (1); the guide plug (3) is positioned at the lower end of the cylinder barrel (1), and the guide plug (3) is in sealing fit with the cylinder barrel (1); a guide cavity (31) is formed in the upper end of the guide plug (3), the piston (6) is in axial linear sliding fit with the guide cavity (31), the rotating shaft (2) is in screw transmission with the piston (6), the upper end of the cylinder barrel (1) is in sealing fit with the outer end of the rotating shaft (2), the upper end of the rotating shaft (2) extends out of the cylinder barrel (1) and is fixedly connected with the first leaf plate (10), and the compression spring (4) is pressed at the upper end of the piston (6); the second leaf plate (20) is fixedly connected with the cylinder barrel (1).

2. The integrated hydraulic hinge according to claim 1, wherein: the upper end and the lower end of the periphery of the guide plug (3) are respectively provided with an axial pit groove (34) and a first annular groove, the axial pit groove (34) is tightly matched with the cylinder barrel (1), and the first annular groove is provided with a first sealing ring (32) which is in sealing fit with the inner wall of the cylinder barrel (1); the periphery of the guide plug (3) is in spacing fit with the inner wall of the cylinder barrel (1) through a spacing step.

3. The integrated hydraulic hinge according to claim 1, wherein: the inner wall of the guide cavity (31) is axially provided with a guide groove (311), the outer wall of the piston (6) is provided with a guide convex rib (61), and the guide convex rib (61) is in axial linear sliding fit with the guide groove (311).

4. The integrated hydraulic hinge according to claim 1, wherein: the piston (6) divides the inside of the cylinder barrel (1) into an upper cavity (13) and a lower cavity (14), the upper end of the piston (6) is provided with a containing cavity (64), the bottom of the containing cavity (64) is provided with a bottom plate (65), the bottom plate (65) is also provided with a first oil passing hole (66) and a second oil passing hole (67) which are used for communicating the upper cavity (13) with the lower cavity (14), and the second oil passing hole (67) is provided with a one-way valve (68); an O-shaped sealing ring (69) is arranged between the periphery of the piston (6) and the inner wall of the cylinder barrel (1); the side wall of the accommodating cavity (64) is provided with a positioning hole (62), the lower end of the rotating shaft (2) is provided with a spiral groove (22), a first ball (63) is arranged in the positioning hole (62), and the first ball (63) is embedded in the spiral groove (22).

5. The integrated hydraulic hinge according to claim 4, characterized in that: an upper screw hole (27) is formed in the top surface of the rotating shaft (2) along the axis direction of the rotating shaft, a sliding groove (26) is formed in the rotating shaft (2) corresponding to the upper cavity (13), the sliding groove (26) is communicated with the upper screw hole (27) and extends along the axis direction of the rotating shaft (2), a transverse pin (21) is arranged in the sliding groove (26), and the upper end of the compression spring (4) abuts against the bottom of the transverse pin (21); a force adjusting screw (23) is also arranged in the upper screw hole (27), and the lower end of the force adjusting screw (23) is used for pressing and contacting the cross pin (21); the periphery of the force adjusting screw (23) is provided with a second annular groove (231), and a second sealing ring (232) is arranged on the second annular groove (231) and is in sealing fit with the upper screw hole (27).

6. The integrated hydraulic hinge according to claim 4, wherein: a plug shaft (33) is integrally arranged at the lower end of the guide plug (3), and the plug shaft (33) extends out of the cylinder barrel (1); an upper sleeve (101) and a lower sleeve (102) are arranged on one side of the first vane (10), the upper sleeve (101) and the lower sleeve (102) are separated, the upper end and the lower end of the upper sleeve (101) are respectively sleeved outside the upper end of the rotating shaft (2) and outside the cylinder barrel (1), the upper sleeve (101) is matched with the rotating shaft (2) through a tightening sleeve, the upper end of the cylinder barrel (1) is arranged to be a reducing section (12) corresponding to the upper sleeve (101) and is in clearance fit with the upper sleeve (101), and the lower sleeve (102) is matched with the lower end of the plug shaft (33) through a roller bearing (60); a middle sleeve (201) is arranged on one side of the second leaf plate (20), the middle sleeve (201) is located between the upper sleeve (101) and the lower sleeve (102), the middle sleeve (201) is sleeved outside the cylinder barrel (1) and fixedly matched with the cylinder barrel (1), an upper plane bearing (40) is arranged between the middle sleeve (201) and the upper sleeve (101), and a lower plane bearing (50) is arranged between the middle sleeve (201) and the lower sleeve (102).

7. The integrated hydraulic hinge according to claim 6, wherein: a lower screw hole (331) is formed in the center of the plug shaft (33), a speed regulation screw (71) is connected to the lower screw hole (331) in a threaded manner, a speed regulation valve needle (7) is connected to the upper end of the speed regulation screw, and a narrowing section is formed in the speed regulation valve needle (7) and inserted into the first oil passing hole (66); the check valve (68) is used for limiting or slowing the damping oil of the lower cavity (14) to flow to the upper cavity (13); the narrowing section of the speed regulating valve needle (7) comprises an upper narrowing section (72) and a lower narrowing section (73), and the clearance between the upper narrowing section (72) and the first oil passing hole (66) is smaller than the clearance between the lower narrowing section (73) and the first oil passing hole (66); the upper end of the speed regulating screw (71) is provided with a concave cavity (711), and the lower end of the speed regulating valve needle (7) is wrapped in the concave cavity (711) and is in running fit with the concave cavity (711).

8. The integrated hydraulic hinge according to claim 6, characterized in that: the upper plane bearing (40) and the lower plane bearing (50) are plane ball bearings (8) and comprise ball seats (81), ball covers (83) and a plurality of second balls (82), the ball seats (81) are annular, lower annular arc grooves (813) are formed in the upper surfaces of the ball seats (81), the second balls (82) are arranged on the lower annular arc grooves (813), enclosing plates (811) extend upwards from the outer sides of the ball seats (81), plug bushes (812) extend downwards from the inner sides of the ball seats (81), and the plug bushes (812) are used for being in plug-in fit with pipe orifices of the middle sleeve (201); the ball cover (83) is annular, the bottom surface of the ball cover (83) is provided with an upper annular arc groove (831) matched with the second ball (82), the upper end of the enclosing plate (811) is provided with an inward flange (814), the inward flange (814) is limited with the periphery of the ball cover (83), and the top surface of the ball cover (83) protrudes out of the upper end of the enclosing plate (811).

9. The integrated hydraulic hinge according to claim 6, wherein: the tightening sleeve piece comprises a lock sleeve (30) and a key (301), the cross sections of the inner side of the lock sleeve (30) and the upper end of the rotating shaft (2) are D-shaped and are in sleeved transmission fit with each other, a key groove is further formed in the inner side of the lock sleeve (30), and the key (301) is inserted into the key groove and is tightly pressed between the rotating shaft (2) and the key groove; or, tight suit includes lock sleeve (30) and holding screw (304), the inboard of lock sleeve (30) with the upper end cross section of pivot (2) all is the D type, and cup joints transmission cooperation each other, and the periphery of lock sleeve (30) corresponds the side plane of pivot (2) and is equipped with the screw, and holding screw (304) pass the side plane crimping of screw and pivot (2).

10. The integrated hydraulic hinge according to claim 1, characterized in that: the outer end of the rotating shaft (2) is sequentially provided with a ball bearing (24) and a Y-shaped sealing ring (25) from top to bottom, the rotating shaft (2) is matched with the inner wall of the cylinder barrel (1) through the ball bearing (24) and the Y-shaped sealing ring (25), the ball bearing (24) comprises an outer ring, an end cover and a plurality of steel balls, the steel balls are annularly distributed on the inner wall of the outer ring, the end cover is arranged at the upper ends of the outer ring and the steel balls, the upper end of the rotating shaft (2) is also provided with an annular groove, and the steel balls are also matched with the annular groove; the inner side of the upper end of the cylinder barrel (1) is provided with a limiting step, and the bottom surface of the outer ring of the ball bearing (24) is connected to the limiting step.

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