CN108425910B - Novel telescopic oil cylinder group - Google Patents
Novel telescopic oil cylinder group Download PDFInfo
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- CN108425910B CN108425910B CN201810422433.4A CN201810422433A CN108425910B CN 108425910 B CN108425910 B CN 108425910B CN 201810422433 A CN201810422433 A CN 201810422433A CN 108425910 B CN108425910 B CN 108425910B
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- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 171
- 238000000034 method Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
- F15B15/165—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type with synchronisation of sections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to the field of hydraulic systems, in particular to a novel telescopic cylinder group, which comprises more than three groups of telescopic cylinders which are arranged in parallel, wherein the three groups of telescopic cylinders are a main cylinder, a first auxiliary cylinder and a second auxiliary cylinder respectively, the first auxiliary cylinder and the second auxiliary cylinder both comprise an outer cylinder body and a piston rod, the piston rod is of a hollow structure to form an inner rod oil duct, the front cavity of the outer cylinder of the first auxiliary cylinder is communicated with the inner rod oil duct in the inner cavity of the outer cylinder of the first auxiliary cylinder, the front cavity of the outer cylinder of the first auxiliary cylinder and the front cavity of the outer cylinder of the second auxiliary cylinder are communicated with each other, the inner rod oil duct of the first auxiliary cylinder and the front cavity of the main cylinder are communicated with each other, and the rear cavity of the outer cylinder of the second auxiliary cylinder is communicated with the inner rod oil duct in the inner cavity of the outer cylinder of the second auxiliary cylinder. The invention has simple structure and convenient operation, effectively shortens the length of the oil cylinder and ensures that the oil cylinder is always kept in a pressure stabilizing state.
Description
Technical Field
The invention relates to the field of hydraulic systems, in particular to a novel telescopic cylinder group.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The hydraulic system has the advantages of simple structure, reliable operation, no transmission clearance and stable motion, and can be widely applied to hydraulic systems of various machines when being used for realizing reciprocating motion. The multi-stage hydraulic cylinder is widely applied in the field of modern hydraulic equipment due to the main advantage of space saving, the existing multi-stage hydraulic cylinder is formed by sleeving two or more stages of pistons (as shown in fig. 1), in order to finish cylinder classification, a sub-cylinder is mostly arranged in a piston rod of a main cylinder, the inner wall of the piston rod of the main cylinder is used as an outer cylinder of the sub-cylinder, deep hole drilling is needed on the cylinder wall of the main cylinder used as the outer cylinder to form a sub-cylinder oil duct so as to realize the integrated operation of the main cylinder and the sub-cylinder, but the multi-stage hydraulic cylinder has a plurality of limitations. The main aspects are as follows:
1. the thrust of the oil cylinder is determined by the diameter of the piston, the calculation formula is F=pi (D/2) 2 P, as can be seen from the design characteristics of the multistage hydraulic cylinder, the piston diameter of the sub-oil cylinder of the multistage hydraulic cylinder gradually decreases along with the increase of the stage number to form D1< D2< D3 (as shown in figure 1), the thrust of the multistage hydraulic cylinder decreases along with the increase of the stage number of the oil cylinder, the pressure decreases along with the expansion length of the oil cylinder, and the thrust of the single-piston-rod conventional hydraulic cylinder corresponding to the thrust cannot be always achieved (under the condition of the same inner diameter);
2. Because the oil duct of the sub-oil cylinder is required to be arranged in the steel wall of the sub-oil cylinder, a deep hole drilling process is required, and extremely high requirements are imposed on the material of the oil cylinder and the wall thickness of the oil cylinder, so that the oil cylinder can not be used often due to the processing process problem, and even the oil cylinder or oil pipe bursts and other phenomena occur in the use process, so that serious accidents occur;
3. Because the sub-cylinders are integrated in the main cylinder, the maintenance is difficult, taking the replacement of the oil seal as an example, the conventional oil cylinder is replaced by only taking the piston away from the cylinder body, and the sub-cylinders of the multi-stage oil cylinder are replaced by taking all the inner cylinders out to replace the oil seal, so other maintenance conditions are also complicated, and the maintenance difficulty is increased.
Disclosure of Invention
The invention aims to provide a novel telescopic oil cylinder group which has a simple structure, is convenient to operate and maintain, effectively shortens the length of an oil cylinder and enables the oil cylinder to be always kept in a pressure stabilizing state.
In order to achieve the above object, the technical scheme of the present invention is as follows:
The novel telescopic cylinder group comprises at least three telescopic cylinders which are arranged in parallel, wherein the three telescopic cylinders are a main cylinder, a first auxiliary cylinder and a second auxiliary cylinder respectively, the front ends of the three telescopic cylinders are connected through connecting pieces, the rear ends of the three telescopic cylinders are connected through tail plates, the first auxiliary cylinder and the second auxiliary cylinder both comprise an outer cylinder body and a piston rod arranged in an inner cavity of the outer cylinder body, the piston rod is of a hollow structure to form an inner rod oil passage, the front cavity of the outer cylinder body of the first auxiliary cylinder is communicated with the inner rod oil passage in the inner cavity of the outer cylinder body of the first auxiliary cylinder, the front cavities of the outer cylinder bodies of the first auxiliary cylinder and the second auxiliary cylinder are communicated with each other, the inner rod oil passage of the first auxiliary cylinder is communicated with the front cavity of the main cylinder, and the inner rod oil passage of the second auxiliary cylinder is communicated with the inner rod oil passage in the inner cavity of the outer cylinder body of the second auxiliary cylinder.
Further, an oil port A and an oil port G are arranged in the front cavity and the rear cavity of the main oil cylinder, an oil port C is arranged in the front cavity of the outer cylinder body of the first auxiliary oil cylinder, an oil port B and an oil port I are respectively arranged at the front end and the rear end of the front cavity of the inner rod oil duct of the first auxiliary oil cylinder, the oil port I enables the front cavity of the outer cylinder body of the first auxiliary oil cylinder to be communicated with the inner rod oil duct in the inner cavity of the outer cylinder body, an oil port B is communicated with the oil port A, an oil port E is arranged in the front cavity of the outer cylinder body of the second auxiliary oil cylinder, an oil port D is arranged in the front cavity of the inner rod oil duct of the second auxiliary oil cylinder, an oil port C is communicated with the oil port E, an oil port D is communicated with the oil port G, an oil port F is respectively arranged in the rear cavity of the outer cylinder body of the first auxiliary oil cylinder and the second auxiliary oil cylinder, an oil port F is communicated with the oil port H, and an oil port J is arranged in the rear cavity of the inner rod oil duct of the second auxiliary oil cylinder.
Further, piston rod lifting lugs are arranged at the front ends of piston rods of the first auxiliary oil cylinder and the second auxiliary oil cylinder, the piston rod lifting lugs are connected with the connecting piece, and pistons are arranged at the ends of the piston rods of the first auxiliary oil cylinder and the second auxiliary oil cylinder, which extend into the inner cavity of the outer cylinder body.
Further, cylinder sleeves are fixed on the outer walls of the outer cylinder bodies of the first auxiliary cylinder and the second auxiliary cylinder.
Further, the sum of the thrust forces of the first auxiliary cylinder and the second auxiliary cylinder is equal to the thrust force of the main cylinder.
Further, the connecting piece includes main fixing base, vice fixing base and base, main fixing base is the pipe shape, main hydro-cylinder's front end embeds in main fixing base, vice fixing base is two sets of, is located main fixing base's both sides respectively, and vice fixing base is platelike structure, and vice fixing base is connected with the piston rod lug of the piston rod front end of first vice hydro-cylinder, second vice hydro-cylinder, the base is platelike structure, is located main fixing base's bottom, the guide pulley has been laid to the lower part of base.
The hydraulic cylinder comprises a main cylinder channel, a first auxiliary cylinder connecting area and a second auxiliary cylinder connecting area, wherein the main cylinder channel is internally provided with a cylinder supporting device, and the cylinder supporting device is in contact with the outer wall of the main cylinder; the first auxiliary oil cylinder connecting area is connected with the first auxiliary oil cylinder, and the second auxiliary oil cylinder connecting area is connected with the second auxiliary oil cylinder.
Further, the cylinder supporting device comprises a supporting plate and a bracket, the supporting plate is vertically arranged at the bottom of the main cylinder channel, the bracket is fixed on the supporting plate and is arc-shaped, the bracket is bounded by the center, and friction groups are symmetrically distributed on the left side and the right side of the bracket.
The beneficial effects of the invention are as follows:
According to the invention, on the premise of saving space, the whole length of the oil cylinder is shortened, the oil cylinder is always in a pressure stabilizing state, and the multi-stage primary-secondary cylinder is not integrated for operation, so that a deep hole drilling process is not needed, the processing process difficulty is reduced, the molding utilization rate of the oil cylinder is improved, the oil cylinder or oil pipe is not easy to burst in the use process, serious accidents are not easy to occur, the safety and reliability of operation are effectively ensured, meanwhile, the oil cylinder is three groups of telescopic cylinder bodies which are arranged in parallel, the condition that the pressure decreases along with the telescopic length of the oil cylinder, and then the thrust decreases is avoided, and meanwhile, the maintenance can be carried out only by disassembling parts inside a single oil cylinder in the maintenance process, so that the maintenance difficulty is reduced, and the maintenance process is simple.
The front ends of the three groups of telescopic cylinders are connected through connecting pieces, the rear ends of the three groups of telescopic cylinders are connected through tail plates, the consistency of the first auxiliary oil cylinder and the second auxiliary oil cylinder is kept, and then the stability of the telescopic cylinders during operation is improved.
The hydraulic cylinder is characterized in that the hydraulic cylinder is positioned and fixed in equipment in advance through the cylinder support, the hydraulic cylinder is small in size and light in weight, easy to position and correct, the hydraulic cylinder support is convenient to operate, the hydraulic cylinder support supports the master cylinder, the stress of the master cylinder, the first auxiliary cylinder and the second auxiliary cylinder on the cylinder support is reduced, the bracket of the hydraulic cylinder support is arc-shaped, the contact area between the hydraulic cylinder support and the outer wall of the master cylinder is increased, the hydraulic cylinder support is convenient to cooperate with the outer wall of the master cylinder, the bearing capacity of the hydraulic cylinder support can be increased by the arrangement of guide wheels, the telescopic cylinder group is convenient to support, the friction group is arranged on the bracket, the hydraulic cylinder is convenient to adjust and correct, the hydraulic cylinder support is convenient to operate, and the hydraulic cylinder support is easy to popularize and implement.
Drawings
Fig. 1 is a schematic structural view of a conventional multistage cylinder.
Fig. 2 is a schematic structural diagram of the novel telescopic cylinder set of the present invention.
FIG. 3 is a second schematic view of the structure of the telescopic cylinder set of the present invention.
Fig. 4 is a schematic structural view of a connecting member of the novel telescopic cylinder group of the present invention.
Fig. 5 is a schematic side view of the telescopic cylinder set of fig. 4 according to the present invention.
Fig. 6 is a schematic structural view of the novel telescopic cylinder set of the present invention after the cylinder supporting device is installed.
Fig. 7 is a schematic diagram of the front view structure of fig. 6 of the novel telescopic cylinder group of the present invention.
Fig. 8 is a schematic rear view of the structure of fig. 6 of the novel telescopic cylinder group of the present invention.
Fig. 9 is a schematic structural view of a cylinder supporting device of the novel telescopic cylinder group.
Fig. 10 is a schematic view of the sectional structure of the telescopic cylinder group in the direction a in fig. 9 according to the present invention.
The reference numerals in the drawings are: 1 is a main oil cylinder, 2 is an outer cylinder body, 3 is a piston rod, 4 is a connecting piece, 4-1 is a main fixing seat, 4-2 is an auxiliary fixing seat, 4-3 is a base, 4-4 is a guide wheel, 5 is a piston rod lifting lug, 6 is an oil seal, 7 is a piston, 8 is an oil port B, 9 is an oil port C, 10 is an oil port G, 11 is an oil port F, 12 is an oil port H, 13 is an oil port I, 14 is an oil cylinder bracket, 14-1 is a main oil cylinder channel, 14-2 is a first auxiliary oil cylinder connecting area, 14-3 is a second auxiliary oil cylinder connecting area, 14-4 is a supporting plate, 14-5 is a bracket, 14-6 is a friction group, 15 is an oil port A, 16 is an oil port D, 17 is an oil port E, 18 is an oil port J, and 19 is a tail plate.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description:
example 1
As shown in fig. 2 to 5, the novel telescopic cylinder group comprises three groups of telescopic cylinders which are arranged in parallel, wherein the three groups of telescopic cylinders are a main cylinder 1, a first auxiliary cylinder and a second auxiliary cylinder respectively, the front ends of the three groups of telescopic cylinders are connected through a connecting piece 4, the rear ends of the three groups of telescopic cylinders are connected through a tail plate 19, the first auxiliary cylinder and the second auxiliary cylinder both comprise an outer cylinder 2 and a piston rod 3 arranged in an inner cavity of the outer cylinder 2, the piston rod 3 is of a hollow structure to form an inner rod oil duct, the front cavity of the outer cylinder 2 of the first auxiliary cylinder is communicated with the inner rod oil duct in the inner cavity of the outer cylinder, the front cavities of the outer cylinder 2 of the first auxiliary cylinder and the outer cylinder 2 of the second auxiliary cylinder are communicated with each other, the inner rod oil duct of the first auxiliary cylinder and the front cavity of the main cylinder 1 are communicated with each other, and the inner rod duct of the inner cavity of the outer cylinder 2 of the second auxiliary cylinder and the inner rod in the inner cavity of the main cylinder are communicated with each other.
The front cavity of the outer cylinder body 2 of the first auxiliary cylinder is provided with an A oil port 15, the rear cavity of the outer cylinder body 1 is provided with a G oil port 10, the front cavity of the outer cylinder body 2 of the first auxiliary cylinder is provided with a C oil port 9, the front and rear ends of the front cavity of the rod inner oil channel of the first auxiliary cylinder are provided with a B oil port 8 and an I oil port 13 respectively, the I oil port 13 enables the front cavity of the outer cylinder body 2 of the first auxiliary cylinder and the rod inner oil channel in the inner cavity of the outer cylinder body to be communicated, the B oil port 8 and the A oil port 15 are communicated, the front cavity of the outer cylinder body 2 of the second auxiliary cylinder is provided with an E oil port 17, the front cavity of the rod inner oil channel of the second auxiliary cylinder is provided with a D oil port 16, the C oil port 9 and the E oil port 17 are communicated, the D oil port 16 and the G oil port 10 are communicated, the rear cavities of the outer cylinder body 2 of the first auxiliary cylinder and the second auxiliary cylinder are provided with an F oil port 11 and an H port 12 respectively, and the rear cavity J18 of the rod inner oil channel of the second auxiliary cylinder is communicated through a J oil port 18.
As an implementation manner, external threads are uniformly distributed on the F oil port 11 and the H oil port 12 in the embodiment, and when the tail plate 19 is sleeved on the F oil port 11 and the H oil port 12, the tail plate 19 and the three groups of telescopic cylinders are fixed through threaded cooperation on the nut and the F oil port 11 and the H oil port 12, the B oil port 8 and the A oil port 15, the C oil port 9 and the E oil port 17, the D oil port 16 and the G oil port 10 and the F oil port 11 and the H oil port 12 are all communicated through hoses.
The front ends of the piston rods 3 of the first auxiliary oil cylinder and the second auxiliary oil cylinder are provided with piston rod lifting lugs 5, the piston rod lifting lugs 5 are connected with the connecting piece 4, and the ends of the piston rods 3 of the first auxiliary oil cylinder and the second auxiliary oil cylinder, which extend into the inner cavity of the outer cylinder body 2, are provided with pistons 7.
The cylinder sleeves are fixed on the outer walls of the outer cylinder bodies 2 of the first auxiliary cylinder and the second auxiliary cylinder, and the novel telescopic cylinder group is fixed on equipment to be used through the cooperation of the cylinder sleeves and the cylinder frame.
The sum of the thrust forces of the first auxiliary cylinder and the second auxiliary cylinder is equal to the thrust force of the main cylinder 1.
The connecting piece 4 comprises a main fixing seat 4-1, an auxiliary fixing seat 4-2 and a base 4-3, wherein the main fixing seat 4-1 is in a circular tube shape, the front end of the main oil cylinder 1 is arranged in the main fixing seat 4-1, the auxiliary fixing seats 4-2 are two groups and are respectively positioned at two sides of the main fixing seat 4-1, the auxiliary fixing seat 4-2 is in a plate-shaped structure, the auxiliary fixing seat 4-2 is connected with the front ends of piston rods 3 of the first auxiliary oil cylinder and the second auxiliary oil cylinder, the base 4-3 is in a plate-shaped structure and is positioned at the bottom of the main fixing seat 4-1, and guide wheels 4-4 are arranged at the lower part of the base 4-3; as an implementation manner, in this embodiment, the main fixing seat 4-1, the auxiliary fixing seat 4-2 and the base 4-3 are welded and fixed, two auxiliary fixing seats 4-2 of each group are respectively reserved, the two auxiliary fixing seats 4-2 are respectively fixed on the same side of the main fixing seat 4-1 at intervals, the piston rod lifting lugs 5 at the front ends of the piston rods 3 of the first auxiliary cylinder and the second auxiliary cylinder are respectively located between the two auxiliary fixing seats 4-2 and are connected through bolts, the base 4-3 is two straight plates, the bottoms of the main fixing seats 4-1 are respectively reserved at intervals left and right, and the guide wheels 4-4 are rotatably connected to the lower parts between the two straight plates.
It is worth to say that the piston rod 3, the piston 7, the oil seal 6, the sealing head and the sealing cover are arranged in the main oil cylinder 1, and the piston 7 is located at the tail end of the piston rod 3 and is attached to the cavity of the main oil cylinder 1.
The inner cavities of the first auxiliary oil cylinder and the second auxiliary oil cylinder are respectively provided with a piston 7, an oil seal 6, an end socket and a sealing cover, and the piston 7 is positioned at the tail end of the piston rod 3 and is attached to the cavity of the main oil cylinder 1.
The working process of the novel telescopic oil cylinder group comprises the following steps:
And (3) an oil cylinder advancing stage: the oil port F11 is communicated with the oil port H12, oil is supplied to the rear cavity of the outer cylinder body 2 of the first auxiliary oil cylinder and the second auxiliary oil cylinder, hydraulic oil flows into the piston rod 3 of the second auxiliary oil cylinder through the oil port J18, then is sent into the oil port G10 through the oil port D16 and enters the rear cavity of the main oil cylinder 1, and under the action of the hydraulic oil, the piston rod 3 in the main oil cylinder 1 is pushed to advance, so that the extension of the oil cylinder is completed.
And (3) a hydro-cylinder retreating stage: the oil port 9 and the oil port 17 are communicated, oil is supplied to the front cavity of the outer cylinder body 2 of the first auxiliary oil cylinder and the second auxiliary oil cylinder, hydraulic oil is fed into the oil port 13 through the oil port 9, then flows into the piston rod 3 of the first auxiliary oil cylinder, flows into the oil port 15 through the oil port 8, and pushes the piston rod 3 in the main oil cylinder 1 to retreat under the action of the hydraulic oil, so that the retreating of the oil cylinders is completed.
Example two
The first embodiment is basically the same as the first embodiment, and the details of the same are not repeated, but the differences are as follows:
As shown in fig. 6 to 10, the novel telescopic cylinder group further comprises a cylinder support 14 and a cylinder supporting device positioned in the cylinder support 14, wherein the cylinder support 14 is positioned at the front ends of the three groups of telescopic cylinders and positioned at the rear end of the connecting piece 4, the cylinder support 14 is of a frame structure and is divided into a main cylinder channel 14-1, a first auxiliary cylinder connecting area 14-2 and a second auxiliary cylinder connecting area 14-3, the cylinder supporting device is arranged in the main cylinder channel 14-1, and the cylinder supporting device is in contact with the outer wall of the main cylinder 1; the first auxiliary oil cylinder connecting area 14-2 is connected with the first auxiliary oil cylinder, and the second auxiliary oil cylinder connecting area 14-3 is connected with the second auxiliary oil cylinder; as an embodiment, the cylinder bracket 14 in this example is made of a plurality of steel plates welded.
The cylinder supporting device comprises a supporting plate 14-4 and a bracket 14-5, wherein the supporting plate 14-4 is vertically arranged at the bottom of a main cylinder channel 14-1, the bracket 14-5 is fixed on the supporting plate 14-4, the bracket 14-5 is arc-shaped, the bracket 14-5 is defined by the center, friction groups 14-6 are symmetrically distributed on the left side and the right side, as an implementation manner, the friction groups 14-6 in the embodiment are rollers which are embedded on the left side and the right side of the bracket 14-5, and the rollers are rotationally connected with the bracket 14-5.
The cylinder supporting device is additionally arranged on the cylinder support 14 to support the main cylinder 1, so that the stress brought to the cylinder support 14 by the main cylinder 1, the first auxiliary cylinder and the second auxiliary cylinder is reduced, and the stable operation of the novel telescopic cylinder group is ensured.
Example III
The first embodiment is basically the same as the first embodiment, and the details of the same are not repeated, but the differences are as follows:
The novel telescopic cylinder group comprises five groups of telescopic cylinders which are arranged in parallel, wherein the five groups of telescopic cylinders are a main cylinder 1, a first auxiliary cylinder, a second auxiliary cylinder, a third auxiliary cylinder and a fourth auxiliary cylinder respectively, the first auxiliary cylinder and the third auxiliary cylinder are positioned on the same side of the main cylinder 1, the second auxiliary cylinder and the fourth auxiliary cylinder are positioned on the same side of the main cylinder 1, namely, the first auxiliary cylinder and the third auxiliary cylinder are positioned on the opposite sides of the second auxiliary cylinder and the fourth auxiliary cylinder, the sum of thrust of the first auxiliary cylinder, the second auxiliary cylinder, the third auxiliary cylinder and the fourth auxiliary cylinder is equal to the thrust of the main cylinder 1, the third auxiliary cylinder, the first auxiliary cylinder, the fourth auxiliary cylinder and the second auxiliary cylinder are identical in structure, and the third auxiliary cylinder and the fourth auxiliary cylinder are identical in connection mode with the first auxiliary cylinder and the second auxiliary cylinder. It is worth emphasizing that the number of slave cylinders may be increased accordingly, as required, but the sum of the thrust forces of the slave cylinders is always equal to the thrust force of the master cylinder 1.
The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present invention.
Claims (5)
1. The novel telescopic cylinder group comprises at least three groups of telescopic cylinders which are arranged in parallel, and is characterized in that the three groups of telescopic cylinders are a main cylinder (1), a first auxiliary cylinder and a second auxiliary cylinder respectively, the front ends of the three groups of telescopic cylinders are connected through a connecting piece (4), the rear ends of the three groups of telescopic cylinders are connected through a tail plate (19), the first auxiliary cylinder and the second auxiliary cylinder both comprise an outer cylinder (2) and a piston rod (3) arranged in an inner cavity of the outer cylinder (2), the piston rod (3) is of a hollow structure to form an inner rod oil duct, a front cavity of the outer cylinder (2) of the first auxiliary cylinder is communicated with an inner rod oil duct in the inner cavity of the outer cylinder, a front cavity of the outer cylinder (2) of the first auxiliary cylinder and a front cavity of the outer cylinder (2) of the second auxiliary cylinder are communicated with each other, and the inner rod duct of the inner cavity of the second auxiliary cylinder (2) is communicated with the inner rod;
The front ends of piston rods (3) of the first auxiliary oil cylinder and the second auxiliary oil cylinder are provided with piston rod lifting lugs (5), the piston rod lifting lugs (5) are connected with connecting pieces (4), and pistons (7) are arranged at the ends of the piston rods (3) of the first auxiliary oil cylinder and the second auxiliary oil cylinder, which extend into the inner cavity of the outer cylinder body (2);
the connecting piece (4) comprises a main fixing seat (4-1), an auxiliary fixing seat (4-2) and a base (4-3), wherein the main fixing seat (4-1) is in a circular tube shape, the front end of the main oil cylinder (1) is arranged in the main fixing seat (4-1), the auxiliary fixing seats (4-2) are two groups and are respectively arranged on two sides of the main fixing seat (4-1), the auxiliary fixing seat (4-2) is in a plate-shaped structure, the auxiliary fixing seat (4-2) is connected with a piston rod lifting lug (5) at the front end of a piston rod (3) of the first auxiliary oil cylinder and the second auxiliary oil cylinder, the base (4-3) is in a plate-shaped structure and is arranged at the bottom of the main fixing seat (4-1), and guide wheels (4-4) are arranged at the lower part of the base (4-3).
2. The novel telescopic cylinder group according to claim 1, wherein an oil port (15) is arranged in a front cavity of the main cylinder (1), an oil port (10) is arranged in a rear cavity of the main cylinder (1), an oil port (9) is arranged in a front cavity of an outer cylinder body (2) of the first auxiliary cylinder, an oil port (8) and an oil port (13) are respectively arranged at the front end and the rear end of the front cavity of an inner cylinder body (2) of the first auxiliary cylinder, the oil port (13) enables the front cavity of the outer cylinder body (2) of the first auxiliary cylinder and the inner cylinder body in the inner cavity thereof to be communicated, an oil port (17) is arranged in the front cavity of an outer cylinder body (2) of the second auxiliary cylinder, an oil port (16) is arranged in the front cavity of the inner cylinder body of the second auxiliary cylinder, an oil port (9) is communicated with the oil port (17), an oil port (11) is respectively arranged in the rear cavity of the outer cylinder body (2) of the first auxiliary cylinder, an oil port (11) is respectively communicated with the oil port (12) in the inner cylinder body (2) of the inner cylinder, and an oil port (18) of the inner cylinder is communicated with the inner cavity (18) of the inner cylinder body (18).
3. The novel telescopic cylinder group according to claim 1 or 2, wherein cylinder liners are fixed on the outer walls of the outer cylinder bodies (2) of the first auxiliary cylinder and the second auxiliary cylinder.
4. The novel telescopic cylinder group according to claim 1, wherein the sum of the thrust forces of the first and second slave cylinders is equal to the thrust force of the master cylinder (1).
5. The novel telescopic cylinder group according to claim 1, further comprising a cylinder bracket (14) and a cylinder supporting device positioned in the cylinder bracket (14), wherein the cylinder bracket (14) is positioned at the front ends of the three groups of telescopic cylinders and positioned at the rear end of the connecting piece (4), the cylinder bracket (14) is of a frame structure and is divided into a main cylinder channel (14-1), a first auxiliary cylinder connecting area (14-2) and a second auxiliary cylinder connecting area (14-3), the cylinder supporting device is arranged in the main cylinder channel (14-1), and the cylinder supporting device is in contact with the outer wall of the main cylinder (1); the first auxiliary oil cylinder connecting area (14-2) is connected with the first auxiliary oil cylinder, and the second auxiliary oil cylinder connecting area (14-3) is connected with the second auxiliary oil cylinder;
The cylinder supporting device comprises a supporting plate (14-4) and a bracket (14-5), wherein the supporting plate (14-4) is vertically arranged at the bottom of a main cylinder channel (14-1), the bracket (14-5) is fixed on the supporting plate (14-4), the bracket (14-5) is arc-shaped, the bracket (14-5) is bounded by the center, and friction groups (14-6) are symmetrically distributed on the left side and the right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810422433.4A CN108425910B (en) | 2018-05-05 | 2018-05-05 | Novel telescopic oil cylinder group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109899339B (en) * | 2019-02-22 | 2024-01-02 | 中船重工中南装备有限责任公司 | Double-acting multistage hydraulic cylinder with built-in additional oil way |
| CN115259009A (en) * | 2022-07-21 | 2022-11-01 | 中国十七冶集团有限公司 | Jacking device suitable for old district transformation |
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| CN101092982A (en) * | 2007-07-27 | 2007-12-26 | 韩顺和 | Boosting oil cylinder |
| DE102008007892A1 (en) * | 2008-02-07 | 2009-08-13 | Festo Ag & Co. Kg | Fluid-operated multi-position cylinder, has fluid absorption device whose components are present at front drive unit and rear drive unit and cooperating during bringing of front drive unit at short absorption phase |
| CN104019081A (en) * | 2014-05-15 | 2014-09-03 | 周泓宇 | Double-acting multilevel hydraulic oil cylinder |
| WO2017097005A1 (en) * | 2015-12-09 | 2017-06-15 | 湖南金能自动化设备有限公司 | Device and method for transferring industrial emulsion explosive |
| CN107339281A (en) * | 2017-06-27 | 2017-11-10 | 徐州永佳液压设备有限公司 | The hydraulic means on hydraulic lifting dam |
| CN208252494U (en) * | 2018-05-05 | 2018-12-18 | 郑州协力建工设备有限公司 | A kind of novel telescopic oil cylinder group |
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| CA710614A (en) * | 1965-06-01 | N. Ganchar Leonard | Multiple stage telescopic cylinders | |
| JPH10213104A (en) * | 1997-01-31 | 1998-08-11 | Sugiyasu Kogyo Kk | Telescopic cylinder |
| CN101092982A (en) * | 2007-07-27 | 2007-12-26 | 韩顺和 | Boosting oil cylinder |
| DE102008007892A1 (en) * | 2008-02-07 | 2009-08-13 | Festo Ag & Co. Kg | Fluid-operated multi-position cylinder, has fluid absorption device whose components are present at front drive unit and rear drive unit and cooperating during bringing of front drive unit at short absorption phase |
| CN104019081A (en) * | 2014-05-15 | 2014-09-03 | 周泓宇 | Double-acting multilevel hydraulic oil cylinder |
| WO2017097005A1 (en) * | 2015-12-09 | 2017-06-15 | 湖南金能自动化设备有限公司 | Device and method for transferring industrial emulsion explosive |
| CN107339281A (en) * | 2017-06-27 | 2017-11-10 | 徐州永佳液压设备有限公司 | The hydraulic means on hydraulic lifting dam |
| CN208252494U (en) * | 2018-05-05 | 2018-12-18 | 郑州协力建工设备有限公司 | A kind of novel telescopic oil cylinder group |
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| CN108425910A (en) | 2018-08-21 |
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