CN215854832U

CN215854832U - Hydraulic support jack with supporting legs

Info

Publication number: CN215854832U
Application number: CN202121872658.3U
Authority: CN
Inventors: 张皖皖; 王荣; 张勇
Original assignee: SHANGHAI AVIATION MACHINERY CO Ltd
Current assignee: SHANGHAI AVIATION MACHINERY CO Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-18
Anticipated expiration: 2031-08-11

Abstract

The utility model belongs to the technical field of jacks, and particularly relates to a hydraulic support jack with support legs, which comprises a hydraulic jack, wherein at least three groups of support legs are arranged on the outer wall of the hydraulic jack, the support legs support the hydraulic jack to lift off, the support legs at the bottoms of the support legs comprise bottom plates, and the bottom plates can be flatly attached to the ground or ship clamping plates and can stably support the hydraulic jack; the supporting legs can compensate the jacking height of the hydraulic jack, and after the supporting legs are detached, the independent hydraulic jack can be used in a relatively narrow space and is flexible to use, so that the hydraulic support jack with the supporting legs has both stability and flexibility; the first handle is arranged on the outer side of the upper portion of the upper supporting rod, the second handle is arranged on the outer wall of the hydraulic jack, and the idler wheels are mounted on the two supporting legs, so that the hydraulic supporting jack with the supporting legs is more convenient to move.

Description

Hydraulic support jack with supporting legs

Technical Field

The utility model belongs to the technical field of jacks, and particularly relates to a hydraulic support jack with support legs.

Background

Helicopter maintenance work is a very complicated system engineering, not only has high requirements on professional ability and literacy of maintenance personnel, but also has special requirements on some maintenance tools, for example, when the helicopter is in work such as maintenance, inspection, leveling, quick replacement of task load and system equipment, a jack is required to jack up a machine body to a certain height so as to meet the requirement on maintenance of the helicopter. In the prior art, chinese patent publication No. CN108706496A describes a multistage hydraulic jack piston one-way protection valve structure for an airplane, which is directly supported on the ground by a jack base and has poor stability; chinese patent publication No. CN211447770U describes a supporting device for a post-cast strip shaping template, in which a supporting rod is provided at the periphery of a jack, which is beneficial to improving the supporting stability, but has the following disadvantages: firstly, the supporting rod only plays a role of auxiliary support around the jack, and if the lifting height is required to be met, a jack with a larger size is required to be adopted, so that the supporting device is heavier; secondly, the supporting device is provided with movable wheels, but the supporting device can be used only by shaking and lifting, which is not convenient and flexible enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic support jack with support legs, and solves the technical problem that the jack in the prior art cannot give consideration to both stability and flexible use.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the hydraulic support jack with the support legs comprises a hydraulic jack, wherein at least three groups of support legs are arranged on the outer wall of the hydraulic jack, and each group of support legs comprises an upper support rod, a lower support rod and a support leg; the outer wall of the hydraulic jack is provided with at least three groups of hinged lug seats corresponding to the supporting legs, each group of hinged lug seat comprises an upper hinged lug seat and a lower hinged lug seat, the upper hinged lug seat is positioned at the upper part of the outer wall of the hydraulic jack, and the lower hinged lug seat is positioned at the lower part of the outer wall of the hydraulic jack; the supporting legs comprise bottom plates and connecting plates arranged on the bottom plates, the lower ends of the upper supporting rods and the lower supporting rods are hinged to the connecting plates, and the upper ends of the upper supporting rods and the lower supporting rods are respectively hinged to the upper hinge lug seats and the lower hinge lug seats; the supporting legs support the hydraulic jack to lift the hydraulic jack to the ground.

Preferably, a first handle is arranged on the outer side of the upper part of the upper supporting rod; a second handle is arranged on the outer wall of the hydraulic jack; and the same side of two supporting legs is provided with a roller wheel bracket, and the roller wheel bracket is provided with a roller wheel.

Preferably, the hydraulic jack comprises a base, an oil cylinder and a hydraulic telescopic assembly are arranged on the base, the hydraulic telescopic assembly comprises a guide sleeve, the oil cylinder is sleeved outside the guide sleeve, an oil storage cavity is formed in a space between the oil cylinder and the guide sleeve, and a vent plug is screwed on the oil cylinder; a piston sleeve is arranged in the guide sleeve in a matching manner, a piston rod is arranged in the piston sleeve in a matching manner, and the piston sleeve and the piston rod form a two-stage telescopic rod;

the base is provided with a hand pump, an oil hole and an embedded hydraulic device are arranged in the base, and the hand pump, the embedded hydraulic device and the oil storage cavity are communicated to drive a hydraulic system of the hydraulic telescopic assembly.

Preferably, the embedded hydraulic device includes reversing valve, oil strain, relief valve and oil return valve, oil strain one end and communicate the oil storage chamber, the other end communicates the reversing valve, the hand pump communicates through reversing valve, oil return valve the flexible subassembly of hydraulic pressure, just the flexible subassembly of hydraulic pressure is inside to communicate through the relief valve the oil storage chamber.

Preferably, trapezoidal threads are arranged on the outer walls of the piston rod and the piston sleeve, a first safety nut is correspondingly screwed on the piston rod, a second safety nut is correspondingly screwed on the piston sleeve, and a first blocking ring and a second blocking ring are respectively arranged at the tops of the outer walls of the piston rod and the piston sleeve.

Preferably, the top of the piston rod is provided with a top head for butting with a top point on an airplane; a large nut is arranged outside the guide sleeve, the upper hinge lug seat is arranged on the large nut, and the lower hinge lug seat is arranged on the base; still be equipped with the handle seat on one of them articulated ear seat, the handle seat is used for placing the handle of hand pump.

Preferably, the upper ends of the upper supporting rod and the lower supporting rod are respectively hinged to the upper hinge lug seat and the lower hinge lug seat through quick-release pins.

Compared with the prior art, the utility model has the beneficial effects that:

1. the hydraulic support jack with the support legs is provided with the support legs through the outer walls of the hydraulic jack, the support legs support the hydraulic jack to be lifted off, the support legs at the bottoms of the support legs comprise bottom plates, and the bottom plates can be flatly attached to the ground or ship clamping plates and can stably support the hydraulic jack; the supporting leg can compensate hydraulic jack's jacking height, and unloads the supporting leg after, solitary hydraulic jack can use in narrow and small space relatively, uses in a flexible way, consequently, this hydraulic support jack with supporting leg has compromise stationarity and flexibility.

2. The first handle is arranged on the outer side of the upper portion of the upper supporting rod, the second handle is arranged on the outer wall of the hydraulic jack, and the idler wheels are mounted on the two supporting legs, so that the hydraulic supporting jack with the supporting legs is more convenient to move.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic perspective view of an embodiment of a hydraulic support jack with support legs according to the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic perspective view of a hydraulic jack according to an embodiment of the present invention.

Fig. 4 is an enlarged view of a portion B of fig. 1.

Fig. 5 is a state diagram of the hydraulic jack in use according to an embodiment of the hydraulic support jack with the supporting leg of the present invention.

Fig. 6 is a hydraulic schematic diagram of a hydraulic jack according to an embodiment of the hydraulic support jack with a support leg of the present invention.

In the drawings, each reference numeral means: the hydraulic jack comprises a hydraulic jack 1, a base 11, a lower hinged lug seat 111, an oil cylinder 12, a guide sleeve 13, a large nut 14, an upper hinged lug seat 141, a pin 142, a spring 143, a clamping plate 144, a vent plug 15, a piston sleeve 16, a second safety nut 161, a second stop ring 162, a piston rod 17, a first safety nut 171, a first stop ring 172, a top 173, a hand pump 18, a reversing valve 181, an oil filter 182, a safety valve 183, an oil return valve 184, a handle seat 19, an upper support rod 2, a lower support rod 3, a support foot 4, a bottom plate 41, a connecting plate 42, a roller support 43, a roller 44 and a second handle 5.

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.

A hydraulic support jack with support legs, please refer to fig. 1-6.

As shown in figure 1, this hydraulic support jack with supporting leg includes hydraulic jack 1, hydraulic jack 1's outer wall is equipped with three groups of supporting legs, this three groups of supporting legs's structure is the same with the mounting means, wherein, use left a group of supporting leg as an example, it includes bracing piece 2, lower support rod 3 and supporting legs 4, wherein, be equipped with first handle 21 in 2 upper portion outsides of last bracing piece, be equipped with second handle 5 on hydraulic jack 1's outer wall, thereby make things convenient for this hydraulic support jack with supporting leg to move the position, it is convenient nimble more to use. The upper ends of the upper supporting rod 2 and the lower supporting rod 3 are respectively hinged on the hydraulic jack 1, the lower ends are hinged on the supporting legs 4, and the three groups of supporting legs support the hydraulic jack 1 to be lifted off the ground, so that the jacking height of the hydraulic jack 1 can be compensated.

Further, as shown in fig. 2, the supporting foot 4 includes a bottom plate 41 and a connecting plate 42 disposed on the bottom plate 41, the bottom plate 41 is disc-shaped, the connecting plate 42 is perpendicular to the bottom plate 41, two hinge holes are disposed on the connecting plate 42, and the lower ends of the upper supporting rod 2 and the lower supporting rod 3 are hinged on the connecting plate 42. When the hydraulic support jack with the support legs is placed on the ground, the bottom plate 41 can be stably supported on the ground in an attached mode. In addition, the same side of two supporting legs 4 is provided with a roller bracket 43, and a roller 44 is arranged on the roller bracket 43, so that the hydraulic supporting jack with the supporting legs can be conveniently pulled to move.

As shown in fig. 3, the hydraulic jack 1 includes a base 11, an oil cylinder 12 and a hydraulic telescopic component are disposed on the base 11, the hydraulic telescopic component is equivalent to a hydraulic cylinder and is telescopic under hydraulic driving, in this embodiment, the hydraulic telescopic component includes a guide sleeve 13, the oil cylinder 12 is sleeved outside the guide sleeve 13, the bottom of the oil cylinder 12 and the base 11 are hermetically disposed, a large nut 14 is disposed outside the guide sleeve 13, the large nut 14 seals the top of the oil cylinder 12, so that a space between the oil cylinder 12 and the guide sleeve 13 is an oil storage cavity, a vent plug 15 is screwed on the oil cylinder 12, the vent plug 15 can be used for filling hydraulic oil after being screwed off, and the oil storage cavity can be communicated with the outside atmosphere after being unscrewed.

The outer wall of hydraulic jack 1 is equipped with three sets of articulated ear seats that correspond to the supporting leg, each articulated ear seat of group includes articulated ear seat 141 and lower articulated ear seat 111, it sets up on big nut 14 to go up articulated ear seat 141, lower articulated ear seat 111 sets up on base 11, thus, it is located hydraulic jack 1's outer wall upper portion to go up articulated ear seat 141, lower articulated ear seat 111 is located hydraulic jack 1's outer wall lower part, make and go up bracing piece 2, the upper end of lower bracing piece 3 can stagger respectively and articulate on articulated ear seat 141 and lower articulated ear seat 111.

Further, the upper ends of the upper support rod 2 and the lower support rod 3 are respectively hinged to the upper hinge lug 141 and the lower hinge lug 111 through quick release pins, the quick release pins on the upper hinge lug 141 are taken as examples, as shown in fig. 4, the quick release pins include pin shafts 142, the upper support rod 2 and the second handle 5 are hinged to the upper hinge lug 141 through the pin shafts 142, springs 143 are arranged on one sides of the pin shafts 142, the pin shafts 142 are tightly pressed, clamping plates 144 are arranged on the other sides of the pin shafts 142, and the pin shafts 142 can be prevented from falling off by penetrating pins in the end portions of the pin shafts and the clamping plates 144.

The quick-release pin can be quickly detached, and the hydraulic jack 1 and the supporting leg are separated, so that the hydraulic jack 1 can be independently used.

As shown in fig. 5, a piston sleeve 16 is arranged in the guide sleeve 13 in a matching manner, a piston rod 17 is arranged in the piston sleeve 16 in a matching manner, in the state of fig. 5, the piston sleeve 16 extends out of the guide sleeve 13 by a certain distance, the piston rod 17 extends out of the piston sleeve 16 by a certain distance, a first piston is arranged at the bottom of the piston sleeve 16, a second piston is arranged at the bottom of the piston rod 17, a check valve is arranged on the first piston, a sealing ring is arranged between the outer wall of the bottom of the piston sleeve 16 and the inner wall of the guide sleeve 13, a sealing ring is also arranged between the outer wall of the bottom of the piston rod 17 and the inner wall of the piston sleeve 16, and the piston sleeve 16 and the piston rod 17 form a two-stage telescopic rod.

As shown in fig. 5, trapezoidal threads are respectively arranged on the outer walls of the piston rod 17 and the piston sleeve 16, a first safety nut 171 is correspondingly screwed on the piston rod 17, a second safety nut 161 is correspondingly screwed on the piston sleeve 16, when the piston rod 17 and the piston sleeve 16 extend out, the second safety nut 161 can be screwed downwards, when the piston rod 17 extends out, the first safety nut 171 can be screwed downwards, and because the trapezoidal threads are respectively arranged on the outer walls of the piston rod 17 and the piston sleeve 16, the first safety nut 171 and the second safety nut 161 can realize self-locking, thereby preventing the piston rod 17 and the piston sleeve 16 from suddenly descending to cause danger due to leakage of hydraulic oil at the bottoms of the piston rod 17 and the piston sleeve 16.

The piston rod 17 and the top of the outer wall of the piston sleeve 16 are respectively provided with a first stop ring 172 and a second stop ring 162, which can prevent the first safety nut 171 and the second safety nut 161 from falling off from the piston rod 17 and the piston sleeve 16.

Further, the top of the piston rod 17 is provided with a top 173 for docking with the top of the aircraft, and the top can be directly against the top of the aircraft in use. As shown in fig. 3, a handle seat 19 is further arranged on one of the upper hinged ear seats, the handle seat 19 is arranged at the root part of the upper hinged ear seat, the handle seat 19 is used for placing a handle of the hand pump 18, and the handle is taken down when in use.

The base 11 is provided with a hand pump 18, the base 11 is provided with an oil hole and an embedded hydraulic device, and the hand pump 18, the embedded hydraulic device and the oil storage cavity are communicated to form a hydraulic system for driving the hydraulic telescopic assembly. Specifically, as shown in fig. 6, in this embodiment, the embedded hydraulic device includes a reversing valve 181, an oil filter 182, a safety valve 183, and an oil return valve 184, one end of the oil filter 182 is communicated to the oil storage chamber, the other end is communicated to the reversing valve 181, the hand pump 18 is communicated to the hydraulic telescopic assembly through the reversing valve 181 and the oil return valve 184, and the interior of the hydraulic telescopic assembly is communicated to the oil storage chamber through the safety valve 183.

The hydraulic support jack with the support legs is used in the following mode: (1) rising: the reversing valve 181 is adjusted to the rising position, the hand pump 18 is shaken to suck hydraulic oil out of the oil storage cavity, the hydraulic oil is filtered by the oil filter 182 along the oil hole and then reaches the pump body of the hand pump 18, the hand pump 18 pumps the hydraulic oil out, the hydraulic oil passes through the one-way valve in the hand pump 18 and then reaches the hydraulic telescopic assembly, and the piston rod 17 and the piston sleeve 16 are sequentially lifted; during the lifting process, a safety valve 183 is arranged on the high-pressure oil way, and during the lifting, if the load reaches 105% -110% of the rated load, the hydraulic oil pumped by the hand pump 18 is unloaded to prevent accidents caused by overload of the hydraulic jack. (2) And (3) descending: when the oil return valve 184 is opened slowly, the hydraulic oil in the hydraulic telescopic assembly flows back to the oil storage cavity along the oil hole, the plug rod 17 and the piston sleeve 16 descend, and the descending speed is controlled by adjusting the opening degree of the oil return valve 184 in the descending process. (3) Forced descending: when the hydraulic jack 1 is in a no-load state, the reversing valve 181 is adjusted to a descending position, and the hand pump 18 is shaken to enable the hydraulic telescopic assembly to descend forcibly.

When the first and

second lock nuts

171, 161 are loosened during the lowering, the first and

second lock nuts

171, 161 are loosened by rotating the ratchet wrench, so that the first and

second lock nuts

171, 161 are raised to release the locked state.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic support jack with supporting leg which characterized in that: the hydraulic jack comprises a hydraulic jack, wherein at least three groups of supporting legs are arranged on the outer wall of the hydraulic jack, and each group of supporting legs comprises an upper supporting rod, a lower supporting rod and supporting legs; the outer wall of the hydraulic jack is provided with at least three groups of hinged lug seats corresponding to the supporting legs, each group of hinged lug seat comprises an upper hinged lug seat and a lower hinged lug seat, the upper hinged lug seat is positioned at the upper part of the outer wall of the hydraulic jack, and the lower hinged lug seat is positioned at the lower part of the outer wall of the hydraulic jack; the supporting legs comprise bottom plates and connecting plates arranged on the bottom plates, the lower ends of the upper supporting rods and the lower supporting rods are hinged to the connecting plates, and the upper ends of the upper supporting rods and the lower supporting rods are respectively hinged to the upper hinge lug seats and the lower hinge lug seats; the supporting legs support the hydraulic jack to lift the hydraulic jack to the ground.

2. The hydraulic support jack with support legs of claim 1, wherein: a first handle is arranged on the outer side of the upper part of the upper supporting rod; a second handle is arranged on the outer wall of the hydraulic jack; and the same side of two supporting legs is provided with a roller wheel bracket, and the roller wheel bracket is provided with a roller wheel.

3. The hydraulic support jack with support legs of claim 1, wherein: the hydraulic jack comprises a base, an oil cylinder and a hydraulic telescopic assembly are arranged on the base, the hydraulic telescopic assembly comprises a guide sleeve, the oil cylinder is sleeved outside the guide sleeve, a space between the oil cylinder and the guide sleeve is an oil storage cavity, and a vent plug is screwed on the oil cylinder; a piston sleeve is arranged in the guide sleeve in a matching manner, a piston rod is arranged in the piston sleeve in a matching manner, and the piston sleeve and the piston rod form a two-stage telescopic rod;

4. The hydraulic support jack with support legs of claim 3, wherein: the embedded hydraulic device comprises a reversing valve, an oil filter, a safety valve and an oil return valve, one end of the oil filter is communicated to the oil storage cavity, the other end of the oil filter is communicated to the reversing valve, the hand pump is communicated to the hydraulic telescopic assembly through the reversing valve and the oil return valve, and the inside of the hydraulic telescopic assembly is communicated to the oil storage cavity through the safety valve.

5. The hydraulic support jack with support legs of claim 3, wherein: the piston rod and the outer wall of the piston sleeve are respectively provided with trapezoidal threads, the piston rod is correspondingly screwed with a first safety nut, the piston sleeve is correspondingly screwed with a second safety nut, and the top of the piston rod and the top of the outer wall of the piston sleeve are respectively provided with a first stop ring and a second stop ring.

6. The hydraulic support jack with support legs of claim 3, wherein: the top of the piston rod is provided with a top head for butting with a top point on an airplane; a large nut is arranged outside the guide sleeve, the upper hinge lug seat is arranged on the large nut, and the lower hinge lug seat is arranged on the base; still be equipped with the handle seat on one of them articulated ear seat, the handle seat is used for placing the handle of hand pump.

7. The hydraulic support jack with support legs of claim 1, wherein: the upper ends of the upper supporting rod and the lower supporting rod are respectively hinged on the upper hinge lug seat and the lower hinge lug seat through quick-release pins.