CN114562494B

CN114562494B - Durable hydraulic equipment capable of preventing multidirectional bearing

Info

Publication number: CN114562494B
Application number: CN202210454728.6A
Authority: CN
Inventors: 章焕红; 楼杰; 孙刚; 史杰波; 徐永健
Original assignee: Nantong Youshen Hydraulic Co ltd
Current assignee: Nantong Youshen Hydraulic Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-07-12
Anticipated expiration: 2042-04-24
Also published as: CN114562494A

Abstract

The invention belongs to the technical field of hydraulic pressure, in particular to a durable multi-direction bearing-proof hydraulic device, which comprises a hydraulic rod and a spherical hinge mechanism, wherein when the hydraulic rod is subjected to lateral force, when the lateral force exceeds the allowable release range of the spherical hinge mechanisms at two ends, a hydraulic inner rod can swing relative to a hydraulic outer sleeve under the action of a hinge ball and an inner spherical surface of the hydraulic outer sleeve, at the moment, an arc-shaped pressing plate at the corresponding side extrudes a first spring, a pull rope which is arranged between a connecting ring and the inner wall surface of the hydraulic outer sleeve and is pulled can pull the connecting ring to move downwards, the connecting ring moves to enable an upper limiting block and a lower limiting block to slide, the corresponding limiting block in the sliding process slides and extrudes the hydraulic inner rod towards one side of the hydraulic inner rod under the matching of an upper inclined surface and a first installation groove inclined surface to limit the hydraulic inner rod, namely, the hydraulic rod is limited to be prohibited from stretching and cannot be used continuously, so that a user can maintain the driven device, and no loss is caused by continuous use.

Description

Durable hydraulic equipment capable of preventing multidirectional bearing

Technical Field

The invention belongs to the technical field of hydraulic pressure, and particularly relates to durable multidirectional-bearing-resistant hydraulic equipment.

Background

Hydraulic levers are very important actuators in hydraulic system devices.

The hydraulic rod works mainly by the pressure of engine oil, the clearance between the tappet body and the seat hole, the clearance between the valve rod and the tappet and the inner check ball valve of the tappet. When the hydraulic tappet starts to work, because no oil pressure exists in the cavity, the tappet plunger is positioned at the bottommost part, the clearance between the tappet and the valve is large, and the valve generates short-time abnormal sound. Along with the operation of the engine, under the action of the engine oil pressure, oil is filled in a plunger cavity in the tappet, the plunger moves downwards, the effective working length of the tappet is increased, and the valve clearance is reduced. Because the force generated by the plunger in the tappet is small and cannot generate the force for compressing the valve spring, when the clearance between the tappet and the valve is small, the tappet does not move any more. Meanwhile, due to the action of the check ball valve in the tappet, the oil pressure in the plunger cavity of the tappet cannot be rapidly discharged, so that the plunger is kept in the original position and keeps the original length to form rigidity, and the valve is pushed to be opened. The valve clearance maintains a certain clearance as the engine operates.

The hydraulic rod bears axial force in work, and when the driven equipment deforms or the hinged part looses, lateral force is generated, so that the hydraulic rod is damaged; the existing method is to replace the hinges at the two ends of the hydraulic rod with spherical hinges, so that small-amplitude lateral displacement can be allowed at a certain lateral angle, and when the driven equipment is loosened and exceeds the lateral amplitude of the spherical hinges or the spherical hinges are damaged, the hydraulic rod still can be subjected to lateral force, so that the hydraulic rod is damaged; for the hydraulic rod driven along the axial direction, the hydraulic rod cannot bear the lateral force, so that the hydraulic rod is inevitably damaged when the hydraulic rod is not stopped in time when the hydraulic rod is subjected to the lateral force, and the damage is effectively reduced if the hydraulic rod is stopped in time after the hydraulic rod is subjected to the lateral force.

However, the existing hydraulic rod cannot be found in time after being subjected to lateral force, even if the hydraulic rod is found to be capable of being driven in a normally telescopic mode, the hydraulic rod can be maintained to eliminate the lateral force when the hydraulic rod is used for a period of time generally, but the hydraulic rod is inevitably damaged when the hydraulic rod is used continuously under the lateral force, and loss is caused.

The invention designs a hydraulic rod used for hydraulic equipment, which loses the telescopic driving capability temporarily when lateral force occurs, so that a user is forced to maintain the driven equipment, and the telescopic capability is automatically recovered after maintenance to solve the problems.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a durable hydraulic equipment that prevents multidirectional bearing, it includes hydraulic stem, ball pivot mechanism, slidable mounting has the hinge ball on the hydraulic stem's the hydraulic pressure pole, and the hydraulic jacket of hydraulic stem does not install the one end of ball pivot mechanism and has interior sphere, and the cooperation of the interior sphere on hinge ball and the hydraulic jacket.

A piston inner cavity is formed in a piston at the lower end of the hydraulic inner rod, a swinging ball panel is fixedly mounted at the lower end of the hydraulic inner rod, the swinging ball panel at the lower end of the hydraulic inner rod is slidably mounted in the piston inner cavity, and an upper elastic pad and a lower elastic pad are mounted between the swinging ball panel and the upper wall surface and the lower wall surface of the piston inner cavity.

As a preferable scheme, a plurality of first mounting grooves which are distributed up and down and provided with inclined planes are uniformly formed in the circumferential direction on the inner circular surface at the lower end of the hinge ball, and two limiting blocks are slidably mounted in each first mounting groove up and down; the limiting block is provided with an inclined surface, and the inclined surface on the limiting block is in contact fit with the inclined surface in the first mounting groove; the limiting block is matched with the hydraulic inner rod.

As an optimal scheme, a transmission connecting mechanism composed of a toothed plate, a gear and a pull rope is arranged between the two limiting blocks in the same group and the inner wall surface of the hydraulic outer sleeve, and when the hydraulic inner rod swings relative to the hydraulic outer sleeve under the action of a spherical hinge formed by a hinge ball and an inner spherical surface, the transmission connecting mechanism transmits the movement of the two limiting blocks relative to the hinge ball and clamps and limits the hydraulic inner rod under the action of the cooperation of inclined planes.

Preferably, the ball joints at both ends of the hydraulic rod are respectively provided with a fixing plate for fixing the hydraulic rod on the driving device.

Preferably, a second mounting groove is formed in the inner side of the first mounting groove formed in the hinge ball, a third mounting groove is formed in the upper side of the second mounting groove, and a through hole penetrating through the hinge ball is formed in the lower side of the second mounting groove.

The transmission connecting mechanism arranged between the two limiting blocks in the same group and the inner wall surface of the hydraulic jacket comprises a toothed plate, a gear and a second spring, wherein the limiting blocks are provided with sliding grooves; two toothed plates are installed in the second installation groove, and one ends of the two toothed plates are slidably installed in sliding grooves of the two corresponding limiting blocks; a gear is rotatably arranged in the second mounting groove and meshed with the two corresponding toothed plates; a second spring is installed in the third installation groove and is an extension spring; one end of the second spring is fixedly installed on the inner end face of the third installation groove, and the other end of the second spring is fixedly installed on the toothed plate on one corresponding side.

One of the two toothed plates in every group toothed plate of the multiunit toothed plate installed in the hinge ball is worn out the through-hole and is located the hinge ball outside, and go-between fixed mounting is at the downside of the toothed plate of wearing out the hinge ball outside, and the even fixed mounting in circumference has a plurality of stay cords between the internal face of go-between and hydraulic pressure overcoat.

As a preferred scheme, a sealing ring is arranged between the hinge ball and the inner spherical surface of the hydraulic jacket; and a sliding sealing mechanism is arranged between the hydraulic inner rod and the inner circular surface of the hinge ball.

As a preferred scheme, three threaded sleeves are uniformly arranged on the outer circular surface of the upper end of the hydraulic outer sleeve in the circumferential direction; three arc-shaped pressing plates are uniformly arranged on the outer circular surface of the hydraulic inner rod in the circumferential direction, three sliding pressing blocks are slidably arranged in the three threaded sleeves, three first springs are arranged between the three sliding pressing blocks and the three arc-shaped pressing plates, and the first springs are compression springs; and each thread bush is internally provided with a bolt in a thread fit manner, and the inner end of the bolt is in extrusion press fit with the corresponding sliding pressure block.

As a preferred scheme, the inner wall surface of the hydraulic jacket is provided with an avoiding connecting ring and an inner concave ring groove extending out of the toothed plate at the outer side of the hinge ball.

Compared with the prior art, the invention has the advantages that:

1. when the hydraulic rod is subjected to lateral force, when the lateral force exceeds the allowable release range of the spherical hinge mechanisms at the two ends, the hydraulic inner rod swings relative to the hydraulic outer sleeve under the action of the hinge ball and the inner spherical surface of the hydraulic outer sleeve, the arc-shaped pressing plate at the corresponding side extrudes the first spring, the pull rope pulled between the connecting ring and the inner wall surface of the hydraulic outer sleeve pulls the connecting ring to move downwards, the connecting ring moves to drive all toothed plates connected with the connecting ring to move, the toothed plates move to drive other corresponding toothed plates to move through gear transmission, the two toothed plates move to drive the upper limiting block and the lower limiting block to slide, the corresponding limiting blocks slide towards one side of the hydraulic inner rod under the matching of the upper inclined surface and the inclined surface of the first mounting groove in the sliding process to extrude the hydraulic inner rod to limit, namely, the hydraulic rod is limited to be prevented from extending and cannot be used continuously, and a user is forced to maintain the driven equipment, no loss due to continuous use.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic illustration of a hinge ball mounting.

FIG. 3 is a schematic view of a sliding compact installation.

FIG. 4 is a schematic view of an arcuate platen installation.

Fig. 5 is a schematic diagram of a hydraulic jacket structure.

Fig. 6 is a schematic view of the piston structure.

Fig. 7 is a schematic view of the installation of the limiting block.

Figure 8 is a schematic view of the attachment ring installation.

Fig. 9 is a schematic view of a hinge ball structure.

Fig. 10 is a schematic view of stopper distribution.

Number designation in the figure: 1. a hydraulic lever; 2. a spherical hinge mechanism; 3. a fixing plate; 4. a hydraulic inner rod; 5. hinging the ball; 6. a hydraulic jacket; 7. a piston; 8. a sliding seal mechanism; 9. a seal ring; 10. a first spring; 11. an arc-shaped pressing plate; 12. sliding a pressing block; 13. a bolt; 14. an inner concave ring groove; 15. a threaded sleeve; 16. an upper elastic pad; 17. a piston inner cavity; 18. swinging the ball panel; 19. a lower elastic pad; 20. a second spring; 21. a connecting ring; 22. pulling a rope; 23. a limiting block; 24. a first mounting groove; 25. a second mounting groove; 26. a through hole; 27. a third mounting groove; 28. a chute; 29. a bevel; 30. a gear; 31. a toothed plate.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must be of a particular length, orientation, configuration and operation in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art by referring to the drawings as appropriate.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the hydraulic rod comprises a hydraulic rod 1 and a spherical hinge mechanism 2, as shown in fig. 3, a hinge ball 5 is slidably mounted on a hydraulic inner rod 4 of the hydraulic rod 1, as shown in fig. 5, one end of a hydraulic outer sleeve 6 of the hydraulic rod 1, at which the spherical hinge mechanism 2 is not mounted, has an inner spherical surface, as shown in fig. 3, and the hinge ball 5 is matched with the inner spherical surface on the hydraulic outer sleeve 6.

As shown in fig. 6, a piston cavity 17 is formed in the piston 7 at the lower end of the hydraulic inner rod 4, a swing ball panel 18 is fixedly mounted at the lower end of the hydraulic inner rod 4, the swing ball panel 18 at the lower end of the hydraulic inner rod 4 is slidably mounted in the piston cavity 17, and an upper elastic pad 16 and a lower elastic pad 19 are mounted between the swing ball panel 18 and the upper and lower wall surfaces of the piston cavity 17.

As shown in fig. 9, a plurality of first installation grooves 24 with inclined surfaces 29 are uniformly distributed in the circumferential direction on the inner circumferential surface of the lower end of the hinge ball 5, and as shown in fig. 8, two limit blocks 23 are slidably installed in each first installation groove 24 up and down; the limiting block 23 is provided with an inclined surface 29, and the inclined surface 29 on the limiting block 23 is in contact fit with the inclined surface 29 in the first mounting groove 24; as shown in fig. 7, the stopper 23 is engaged with the hydraulic inner rod 4.

As shown in fig. 10, a transmission connection mechanism composed of a toothed plate 31, a gear 30 and a pull rope 22 is installed between the two limit blocks 23 in the same group and the inner wall surface of the hydraulic jacket 6, and when the hydraulic inner rod 4 swings relative to the hydraulic jacket 6 under the action of a spherical hinge formed by the hinge ball 5 and the inner spherical surface, the transmission connection mechanism transmits the movement of the two limit blocks 23 relative to the hinge ball 5 and clamps and limits the hydraulic inner rod 4 under the action of the cooperation of the inclined surface 29.

As shown in fig. 1, a fixing plate 3 for fixing the hydraulic rod 1 to a driving device is mounted on the spherical hinges at both ends of the hydraulic rod 1.

As shown in fig. 9, the inner sides of the first mounting grooves 24 opened by the hinge ball 5 are respectively provided with a second mounting groove 25, the upper side of the second mounting groove 25 is provided with a third mounting groove 27, and the lower side of the second mounting groove 25 is provided with a through hole 26 penetrating through the hinge ball 5.

As shown in fig. 10, the transmission connecting mechanism installed between the two limiting blocks 23 in the same group and the inner wall surface of the hydraulic jacket 6 includes a toothed plate 31, a gear 30, and a second spring 20, wherein the limiting blocks 23 have sliding grooves 28; two toothed plates 31 are installed in the second installation groove 25, and one ends of the two toothed plates 31 are slidably installed in the sliding grooves 28 of the two corresponding limiting blocks 23; as shown in fig. 8, a gear 30 is rotatably mounted in the second mounting groove 25, and the gear 30 is engaged with two corresponding toothed plates 31; a second spring 20 is installed in the third installation groove 27, and the second spring 20 is an extension spring; one end of the second spring 20 is fixedly installed on the inner end surface of the third installation groove 27, and the other end of the second spring 20 is fixedly installed on the tooth plate 31 on the corresponding side.

As shown in fig. 8 and 10, one toothed plate 31 of two toothed plates 31 in each set of toothed plates 31 of the multiple sets of toothed plates 31 installed in the hinge ball 5 penetrates through the through hole 26 and is located outside the hinge ball 5, the connecting ring 21 is fixedly installed at the lower side of the toothed plate 31 penetrating outside the hinge ball 5, and a plurality of pull ropes 22 are circumferentially and uniformly fixedly installed between the connecting ring 21 and the inner wall surface of the hydraulic jacket 6.

In the invention, when the hydraulic rod 1 is subjected to lateral force and the lateral force exceeds the allowable release range of the spherical hinge mechanisms 2 at two ends, when the hydraulic inner rod 4 swings relative to the hydraulic jacket 6 under the action of the spherical hinge 5 and the spherical surface in the hydraulic jacket 6, the swing ball panel 18 at the lower end of the hydraulic inner rod 4 swings in the piston inner cavity 17, because the telescopic lengths of the hydraulic rod 1 during working are different, namely the swing radiuses of the hydraulic inner rod 4 relative to the hydraulic jacket 6 during swinging relative to the hydraulic jacket 6 under the action of the spherical hinge 5 and the spherical surface in the hydraulic jacket 6 are different, in order to prevent the swing ball panel 18 from swinging and interfering with the piston inner cavity 17, the upper elastic pad 16 and the lower elastic pad 19 are arranged between the swing spherical plate 18 and the upper wall surface and the lower wall surface of the piston inner cavity 17, and in normal condition, the swing ball panel 18 and the piston inner cavity 17 are ensured to be maintained in a stable state through the upper elastic pad 16 and the lower elastic pad 19, namely, the piston 7 is basically kept in an integrated state, and when a large lateral force is applied to the swinging ball panel 18 to swing relative to the piston inner cavity 17, the upper elastic pad 16 and the lower elastic pad 19 deform to adapt to the swinging of the swinging ball panel 18 and the piston inner cavity 17; so that the hydraulic inner rod 4 can swing relative to the hydraulic outer sleeve 6 no matter the hydraulic rod 1 is in any length, and the hydraulic rod 1 is locked.

In the invention, after the pull rope 22 is pulled, the two upper and lower limiting blocks 23 in the same group slide towards one side of the hydraulic inner rod 4 to press the hydraulic inner rod 4 under the action of the inner inclined surface 29 of the first mounting groove 24 and the upper inclined surface 29 of the limiting block 23. If the back of exerting pressure, when hydraulic stem 1 is being shortened by the drive, the stopper 23 of upside has the motion trend that can be driven to the direction of compressing tightly by pole 4 in the hydraulic pressure, and upside stopper 23 can stretch out and draw back interior pole and compress tightly under this trend, strengthens its spacing ability, and stopper 23 of downside has the direction motion trend of relaxing under the drive of pole 4 in the hydraulic pressure simultaneously, but two stopper 23 are by synchronous opposite directions motion of pinion rack 31 and gear 30 about nevertheless, so downside stopper 23 plays supplementary pressure ability. If exert pressure the back, when hydraulic stem 1 is being driven when extension, downside stopper 23 has the motion trend that can be driven to the direction of compressing tightly by interior pole 4 of hydraulic pressure in the same group, downside stopper 23 can stretch out and draw back interior pole and compress tightly under this trend, strengthens its spacing ability, and the stopper 23 of upside has the direction motion trend to relaxing under the drive of interior pole 4 of hydraulic pressure simultaneously, but two stopper 23 are by the synchronous relative motion of pinion rack 31 and gear 30 from top to bottom, so upside stopper 23 plays supplementary pressure ability.

As shown in fig. 2, a sealing ring 9 is arranged between the hinge ball 5 and the inner spherical surface of the hydraulic jacket 6; and a sliding sealing mechanism 8 is arranged between the hydraulic inner rod 4 and the inner circular surface of the hinge ball 5. The sealing ring 9 is used for sealing the hinge ball 5 and the inner spherical surface, the sliding sealing mechanism 8 is used for sealing the hydraulic inner rod 4 and the hinge ball 5, and the sliding sealing mechanism 8 is in the prior art.

As shown in fig. 2, 3 and 4, three thread sleeves 15 are circumferentially and uniformly arranged on the outer circular surface of the upper end of the hydraulic outer sleeve 6; three arc-shaped pressing plates 11 are uniformly arranged on the outer circular surface of the hydraulic inner rod 4 in the circumferential direction, three sliding pressing blocks 12 are slidably arranged in three threaded sleeves 15, three first springs 10 are arranged between the three sliding pressing blocks 12 and the three arc-shaped pressing plates 11, and the first springs 10 are compression springs and have certain pre-pressure; a bolt 13 is installed in each threaded sleeve 15 in a threaded fit mode, and the inner end of each bolt 13 is in extrusion fit with the corresponding sliding pressing block 12. In the invention, at the beginning, the three arc-shaped pressing plates 11 play a certain limiting role in the swinging of the hydraulic inner rod 4 relative to the hydraulic outer sleeve 6, when the lateral force greatly exceeds the allowable release range of the spherical hinge mechanisms 2 at the two ends, the arc-shaped pressing plate 11 at the corresponding side can extrude the first spring 10, so that the first spring 10 is compressed, and the hydraulic inner rod 4 swings relative to the hydraulic outer sleeve 6 under the action of the spherical hinge 5 relative to the hydraulic outer sleeve 6 and the inner spherical surface of the hydraulic outer sleeve 6.

As shown in fig. 5, the inner wall surface of the hydraulic jacket 6 is provided with an avoidance connecting ring 21 and an inner concave ring groove 14 extending out of the toothed plate 31 outside the hinge ball 5.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

The implementation mode is as follows: when the device designed by the invention is used, when the hydraulic rod 1 is subjected to lateral force and the lateral force exceeds the allowable release range of the spherical hinge mechanisms 2 at the two ends, the hydraulic inner rod 4 can swing relative to the hydraulic outer sleeve 6 under the action of the spherical hinge balls 5 and the inner spherical surfaces of the hydraulic outer sleeve 6, at the moment, the arc-shaped pressing plate 11 at the corresponding side extrudes the first spring 10, the pull rope 22 which is arranged between the connecting ring 21 and the inner wall surface of the hydraulic outer sleeve 6 and is pulled to pull the connecting ring 21 to move downwards, the connecting ring 21 moves to drive all the toothed plates 31 connected with the connecting ring to move, the toothed plates 31 move to drive other corresponding toothed plates 31 to move through the transmission of the gear 30, the two toothed plates 31 move to drive the upper and lower limiting blocks 23 to slide, the corresponding limiting blocks 23 slide towards one side of the hydraulic inner rod 4 under the matching of the inclined surfaces 29 of the upper limiting blocks and the inclined surfaces 29 of the first mounting grooves 24 in the sliding process to extrude the hydraulic inner rod 4 to limit the hydraulic inner rod 4, namely, the hydraulic rod 1 is limited and prevented from extending and retracting and can not be used continuously, so that a user is forced to maintain the driven equipment, and the loss caused by continuous use can be avoided. After the driving device and the spherical hinge causing the lateral force are maintained, the limiting block 23 is restored to the original state, and the hydraulic rod 1 is further restored to the normal telescopic function.

Claims

1. The utility model provides a durable hydraulic equipment that multidirectional was born, it includes hydraulic stem, ball pivot mechanism, its characterized in that: a hydraulic inner rod of the hydraulic rod is slidably provided with a hinge ball, one end of a hydraulic outer sleeve of the hydraulic rod, which is not provided with the spherical hinge mechanism, is provided with an inner spherical surface, and the hinge ball is matched with the inner spherical surface on the hydraulic outer sleeve;

a piston inner cavity is formed in a piston at the lower end of the hydraulic inner rod, a swinging ball panel is fixedly mounted at the lower end of the hydraulic inner rod, the swinging ball panel at the lower end of the hydraulic inner rod is slidably mounted in the piston inner cavity, and an upper elastic pad and a lower elastic pad are mounted between the swinging ball panel and the upper wall surface and the lower wall surface of the piston inner cavity;

a second mounting groove is formed in the inner side of each first mounting groove formed in the hinge ball, a third mounting groove is formed in the upper side of each second mounting groove, and a through hole penetrating through the hinge ball is formed in the lower side of each second mounting groove;

the transmission connecting mechanism arranged between the two limiting blocks in the same group and the inner wall surface of the hydraulic jacket comprises a toothed plate, a gear and a second spring, wherein the limiting blocks are provided with sliding grooves; two toothed plates are installed in the second installation groove, and one ends of the two toothed plates are slidably installed in sliding grooves of the two corresponding limiting blocks; a gear is rotatably arranged in the second mounting groove and meshed with the two corresponding toothed plates; a second spring is installed in the third installation groove and is an extension spring; one end of the second spring is fixedly arranged on the inner end surface of the third mounting groove, and the other end of the second spring is fixedly arranged on the toothed plate on the corresponding side;

2. A durable multi-directional load-resistant hydraulic apparatus as claimed in claim 1, wherein: a plurality of first mounting grooves with inclined planes are uniformly distributed in the circumferential direction on the inner circular surface at the lower end of the hinge ball, and two limiting blocks are slidably mounted in each first mounting groove up and down; the limiting block is provided with an inclined surface, and the inclined surface on the limiting block is in contact fit with the inclined surface in the first mounting groove; the limiting block is matched with the hydraulic inner rod.

3. A durable multi-directional load-resistant hydraulic apparatus as claimed in claim 1, wherein: and a transmission connecting mechanism formed by a toothed plate, a gear and a pull rope is arranged between the two limiting blocks in the same group and the inner wall surface of the hydraulic jacket, and when the hydraulic inner rod swings relative to the hydraulic jacket under the action of a spherical hinge formed by the hinge ball and the inner spherical surface, the transmission connecting mechanism transmits the movement of the two limiting blocks relative to the hinge ball and clamps and limits the hydraulic inner rod under the action of the cooperation of the inclined planes.

4. A durable multi-directional load-resistant hydraulic apparatus as claimed in claim 1, wherein: and the spherical hinges at the two ends of the hydraulic rod are respectively provided with a fixing plate for fixing the hydraulic rod on the driving equipment.

5. A durable multi-directional load-resistant hydraulic apparatus as claimed in claim 1, wherein: a sealing ring is arranged between the hinged ball and the inner spherical surface of the hydraulic jacket; and a sliding sealing mechanism is arranged between the hydraulic inner rod and the inner circular surface of the hinge ball.

6. A durable multi-directional load-resistant hydraulic apparatus as claimed in claim 1, wherein: three thread sleeves are uniformly arranged on the outer circular surface of the upper end of the hydraulic outer sleeve in the circumferential direction; three arc-shaped pressing plates are uniformly arranged on the outer circular surface of the hydraulic inner rod in the circumferential direction, three sliding pressing blocks are slidably arranged in the three threaded sleeves, three first springs are arranged between the three sliding pressing blocks and the three arc-shaped pressing plates, and the first springs are compression springs; and each thread bush is internally provided with a bolt in a thread fit manner, and the inner end of the bolt is in extrusion press fit with the corresponding sliding pressure block.

7. A durable multi-directional load-resistant hydraulic apparatus as claimed in claim 1, wherein: the inner wall surface of the hydraulic jacket is provided with an avoidance connecting ring and an inner concave ring groove extending out of the toothed plate at the outer side of the hinge ball.