CN216950720U - Tandem type large-displacement shield hydraulic pump - Google Patents
Tandem type large-displacement shield hydraulic pump Download PDFInfo
- Publication number
- CN216950720U CN216950720U CN202220638854.2U CN202220638854U CN216950720U CN 216950720 U CN216950720 U CN 216950720U CN 202220638854 U CN202220638854 U CN 202220638854U CN 216950720 U CN216950720 U CN 216950720U
- Authority
- CN
- China
- Prior art keywords
- axial
- plunger pump
- axial plunger
- pump unit
- displacement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a tandem type large-displacement shield hydraulic pump, which solves the problems of inconvenience in hydraulic pump installation, difficulty in oil port arrangement and large overall size in the prior art. The axial plunger pump unit A and the axial plunger pump unit B are arranged back to back, a connecting body is arranged between the axial plunger pump unit A and the axial plunger pump unit B, a low-pressure port and a high-pressure port which are communicated with the axial plunger pump unit A and the axial plunger pump unit B are arranged on the connecting body along the circumferential direction, and the axial plunger pump unit A and the axial plunger pump unit B share one driving through shaft. The large-displacement and small-displacement swash plate type axial plunger pump unit is integrated in the shell, and the design of a driving through shaft is shared, so that the tandem type large-displacement shield hydraulic pump is simple and compact in structure, small in size and reduced in manufacturing cost; meanwhile, the installation is convenient, and the use cost is reduced.
Description
Technical Field
The utility model relates to the technical field of shield hydraulic pumps, in particular to a tandem type large-displacement shield hydraulic pump.
Background
With the increasing development of national infrastructure, the shield is widely applied to various geological engineering, the working condition of the shield is complex and changeable in the tunneling process, so the requirement of the shield large-displacement hydraulic pump is gradually increased, in the actual engineering application, an equipment manufacturer often directly connects two independent axial plunger pumps in series to form a double-pump series structure, or connects two independent plunger pumps and a gear pump in series, the structure is complex, the whole size is large, a large amount of equipment installation space is occupied, the number of components is large, faults such as eccentric wear, disc burning and the like are easy to occur, and the maintenance cost is high.
In the prior art, if a swash plate type plunger pump with application number 201720878329.7 is connected with a gear pump duplex hydraulic pump in series, the rear end of a shell of the swash plate type plunger pump is connected with the front end of the shell of the gear pump into a whole through a connecting disc, and a plunger pump shaft of the swash plate type plunger pump is connected with a gear pump shaft of the gear pump into a whole through a coupling, but the structure is complex, and the whole size is large.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the background technology, the utility model provides a tandem type large-displacement shield hydraulic pump, which solves the problems of inconvenience in hydraulic pump installation, difficulty in oil port arrangement and large overall size in the prior art.
The technical scheme of the utility model is realized as follows: the utility model provides a serial-type large discharge shield constructs hydraulic pump, includes axial plunger pump unit A and axial plunger pump unit B that back to back set up, is equipped with the connector between axial plunger pump unit A and the axial plunger pump unit B, is equipped with low pressure mouth and the high-pressure port that is linked together with axial plunger pump unit A and axial plunger pump unit B along circumference on the connector, and axial plunger pump unit A and axial plunger pump unit B share a drive through-shaft.
Further, the axial plunger pump unit A is a large-displacement swash plate type axial plunger pump, the axial plunger pump unit B is a small-displacement swash plate type axial plunger pump, and the large-displacement swash plate type axial plunger pump and the small-displacement swash plate type axial plunger pump are correspondingly arranged on two sides of the connecting body. Preferably, a cylinder body I of the large-displacement swash plate type axial plunger pump is opposite to a cylinder body II of the small-displacement swash plate type axial plunger pump.
Further, the axial plunger pump unit A comprises a shell I and a pump body I, wherein the pump body I is positioned in a cavity in the shell I, and the shell I is connected with the connecting body in a sealing mode; the pump body I comprises a cylinder body I and a swash plate I, the cylinder body I is fixedly connected to the drive through shaft through a spline, a valve plate I is arranged between the cylinder body I and the connecting body, and the valve plate I is fixed on the connecting body; be equipped with a plurality of axial cavity in the cylinder body I, the axial cavity slides and is equipped with plunger I, and plunger I is connected with sloping cam plate I through ball pivot mechanism, and I cover of sloping cam plate is established and is passed through epaxially and fix in casing I in the drive.
The ball hinge mechanism comprises a ball part and a sliding shoe I, wherein the ball part and the sliding shoe I are arranged at the outer end of the plunger I, the sliding shoe I is hinged to the ball part through a spherical surface, and the sliding shoe I is connected with the swash plate I through a return plate I. The flow distribution hole in the flow distribution plate I is respectively communicated with the high-pressure port and the axial cavity; a lubricating fine hole is formed in the ball part at the outer end of the plunger I and is communicated with the axial cavity in the plunger I; the drive through shaft is rotatably arranged in the shell I through a first bearing assembly and is sealed through a front cover.
Further, the axial plunger pump unit B comprises a shell II and a pump body II, the pump body II is positioned in a cavity inside the shell II, and the shell II is hermetically connected with the connecting body; the pump body II comprises a cylinder body II and a swash plate II, the cylinder body II is fixedly connected to the drive through shaft through a spline, a valve plate II is arranged between the cylinder body II and the connecting body, and the valve plate II is fixed on the connecting body; a plurality of axial cavities are arranged in the cylinder body II, plungers II are arranged in the axial cavities in a sliding mode, the plungers II are connected with a swash plate II through a spherical hinge mechanism, and the swash plate II is sleeved on a driving through shaft and fixed in a shell II.
The spherical hinge mechanism comprises a ball part and a sliding shoe II which are arranged at the outer end of the plunger II, the sliding shoe II is hinged with the spherical surface of the ball part, and the sliding shoe II is connected with the swash plate II through a return plate II. The distributing hole on the distributing plate II is respectively communicated with the high-pressure port and the axial cavity; a lubricating fine hole is formed in the ball part at the outer end of the plunger II and is communicated with the axial cavity in the plunger II; the driving through shaft is rotatably arranged in the shell II through a second bearing assembly and is sealed through a rear cover.
Further, all be equipped with the low pressure passageway in casing I and the casing II, the low pressure passageway all communicates with the low pressure mouth for inject low pressure fluid into in casing I and the casing II, provide lubricated environment.
The large-displacement and small-displacement swash plate type axial plunger pump unit is integrated in the shell and shares the design of a driving through shaft, so that the tandem type large-displacement shield hydraulic pump has a simple and compact structure and a smaller volume, and the manufacturing cost is reduced; meanwhile, the installation is convenient, and the use cost is reduced. The two axial plunger pump units share the inlet and the oil outlet in the connector, the universality is good, the axial plunger pumps with different flow outputs can be adopted for combination, and the multiple large-flow outputs are easy to realize.
Drawings
In order to illustrate the embodiments of the utility model more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is an overall internal sectional view of the present invention.
Fig. 2 is a partial schematic view of a connection state of the axial plunger pump unit a and the axial plunger pump unit B.
In the figure: the hydraulic oil cylinder comprises a drive through shaft 1, a front cover 2, a shell I3, a swash plate I4, a return disc I5, a plunger I6, a cylinder body I7, a port disc I8, a connecting body 9, a port disc II 10, a cylinder body II 11, a shell II 12, a plunger II 13, a return disc II 14, a swash plate II 15, a rear cover 16, a low-pressure port 17, a high-pressure port 18, a large-displacement swash plate type axial plunger pump 19, a small-displacement swash plate type axial plunger pump 20, a slipper I21, a slipper II 22, a first bearing assembly 23, a second bearing assembly 24 and a low-pressure channel 25.
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 2, in embodiment 1, a tandem type large-displacement shield hydraulic pump includes an axial plunger pump unit a and an axial plunger pump unit B that are arranged back to back, and a connecting body 9 is arranged between the axial plunger pump unit a and the axial plunger pump unit B, that is, a cylinder body of the axial plunger pump unit a and a cylinder body of the axial plunger pump unit B are connected to the connecting body 9 in a symmetrical manner. The connecting body is used as an intermediate connecting piece to connect the axial plunger pump unit A and the axial plunger pump unit B in series. The connecting body 9 is circumferentially provided with a low pressure port 17 and a high pressure port 18 which are communicated with the axial plunger pump unit A and the axial plunger pump unit B, and the low pressure port 17 can be provided with one for injecting low pressure oil into the axial plunger pump unit A and the axial plunger pump unit B to provide a lubricating environment for the axial plunger pump unit A and the axial plunger pump unit B. The number of the high pressure ports 18 may be set to be plural as required for sucking and discharging oil. The axial plunger pump unit A and the axial plunger pump unit B share one drive through shaft 1; the driving through shaft penetrates through the axial plunger pump unit A and the axial plunger pump unit B along the axial direction, and under the action of the driving device, the driving through shaft provides the rotating power of the axial plunger pump unit A and the axial plunger pump unit B. In this embodiment, the axial plunger pump unit a and the axial plunger pump unit B may adopt the same displacement axial plunger pump unit, and also adopt different displacement axial plunger pump units. The serial structure design realizes the output of the large displacement of the hydraulic pump, and the hydraulic pump has the advantages of compact structure, smaller volume and low cost.
Preferably, in this embodiment, the axial plunger pump unit a is a large-displacement swash plate type axial plunger pump 19, the axial plunger pump unit B is a small-displacement swash plate type axial plunger pump 20, and the large-displacement swash plate type axial plunger pump 19 and the small-displacement swash plate type axial plunger pump 20 are correspondingly arranged on two sides of the connecting body 9. Wherein, the cylinder body I7 of the large-displacement swash plate type axial plunger pump 19 is arranged opposite to the cylinder body II 11 of the small-displacement swash plate type axial plunger pump 20, namely, the back surfaces (surfaces without plungers) of the cylinder bodies are arranged oppositely to form a back-to-back structure, the sealing performance is good, and the structure is more compact.
As shown in fig. 1, in embodiment 2, a tandem type large displacement shield hydraulic pump is based on embodiment 1, the axial plunger pump unit a includes a housing i 3 and a pump body i, the pump body i is located in a cavity inside the housing i 3, the housing i 3 is hermetically connected with a connector 9, and a sealed chamber for accommodating the pump body i is formed. The pump body I includes cylinder body I7 and sloping cam plate I4, and cylinder body I7 leads to epaxial 1 through spline fixed connection in the drive, and cylinder body I7 can lead to the synchronous rotation of axle along with the drive. Be equipped with valve plate I8 between cylinder body I7 and the connector 9, valve plate I8 is fixed on connector 9, and valve plate I8 does not rotate along with the drive through-shaft, realizes that I7 of cylinder body rotates relative valve plate I8 for reposition of redundant personnel and suction oil. A plurality of axial cavities are arranged in the cylinder body I7, plungers I6 are arranged in the axial cavities in a sliding mode, the plungers I6 are connected with a swash plate I4 through a spherical hinge mechanism, and the swash plate I4 is sleeved on the driving through shaft 1 and fixed in the shell I3; during operation, the drive through shaft drives the cylinder body I to rotate, and the plunger I6 reciprocates in the axial cavity under the action of the swash plate I4 to realize oil suction and discharge. Be equipped with low pressure passageway 25 in the casing I3, the one end and the low pressure mouth 17 intercommunication of low pressure passageway 25, the other end communicate to the inside cavity of casing I3 in for inject low pressure oil into the inside cavity of casing I3, provide lubricated environment for the pump body I.
Furthermore, the ball pivot mechanism includes ball portion and the boots I21 that set up in I6 outer ends of plunger, and boots I21 and ball portion sphere are articulated, satisfy the rotatory production of I6 rotations of plunger along with cylinder body I. Slipper I21 is connected with swash plate I4 through return stroke dish I5, specifically is: return stroke dish I and swash plate I cooperation provide the slide of circumferential motion for slipper I21, and the motion of relative swash plate is realized through slipper I21 to plunger I6. Further, the distributing hole in the distributing plate I8 is respectively communicated with the high-pressure port 18 and the axial cavity. The plunger I6 moves in the axial cavity, and hydraulic oil in the cavity is sucked and discharged through the distributing hole. Be equipped with lubricated pore in the bulb portion of I6 outer end of plunger, lubricated pore communicates with the axial cavity in the I6 plunger. The diameter of the lubricating fine hole in the embodiment is far smaller than that of the axial cavity in the plunger I6, and the lubricating fine hole is only used for providing a little oil for the spherical hinge mechanism to lubricate, so that abrasion is reduced. The driving through shaft 1 is rotatably arranged in the shell I3 through a first bearing assembly 23 and is sealed through the front cover 2; the first bearing assembly 23 in this embodiment may employ a radial ball bearing.
Furthermore, the spherical hinge mechanism comprises a ball part and a sliding shoe II 22 which are arranged at the outer end of the plunger II 13, and the sliding shoe II 22 is hinged with the spherical surface of the ball part, so that the rotation of the plunger II 13 along with the rotation of the cylinder body II is met. The sliding shoe II 22 is connected with the swash plate II 15 through the return plate II 14. The method specifically comprises the following steps: and the return disc II is matched with the swash plate II to provide a slideway for the slipper II to move in the circumferential direction, and the plunger II realizes the movement relative to the swash plate through the slipper II.
Further, the distributing hole on the distributing plate II 10 is respectively communicated with the high-pressure port 18 and the axial cavity; the plunger I6 moves in the axial cavity, and hydraulic oil in the cavity is sucked and discharged through the distributing hole. A lubricating fine hole is formed in the ball part at the outer end of the plunger II 13 and is communicated with the axial cavity in the plunger II 13; the diameter of the lubricating fine hole in the embodiment is far smaller than that of the axial cavity in the plunger II, and the lubricating fine hole is only used for providing a little oil for spherical surface hinging and is used for lubricating a spherical hinge mechanism, so that the abrasion is reduced. In addition, the drive through shaft 1 is rotatably arranged in the shell II 12 through the second bearing assembly 23 and is sealed through the rear cover 16, and the overall sealing performance is improved. In this embodiment, axial plunger pump unit A and axial plunger pump unit B establish ties, have realized the simultaneous drive of big discharge capacity and little discharge capacity axial plunger pump unit, realize multiple large-traffic output, accord with the discharge capacity demand of shield structure machine under the multiple operating mode.
The other structure is the same as embodiment 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a serial-type large discharge capacity shield constructs hydraulic pump which characterized in that: including axial plunger pump unit A and the axial plunger pump unit B that back to back set up, be equipped with connector (9) between axial plunger pump unit A and the axial plunger pump unit B, be equipped with along circumference on connector (9) and be linked together with axial plunger pump unit A and axial plunger pump unit B low pressure mouth (17) and high-pressure port (18), axial plunger pump unit A and axial plunger pump unit B share one drive logical axle (1).
2. The tandem type large-displacement shield hydraulic pump according to claim 1, characterized in that: the axial plunger pump unit A is a large-displacement inclined disc type axial plunger pump (19), the axial plunger pump unit B is a small-displacement inclined disc type axial plunger pump (20), and the large-displacement inclined disc type axial plunger pump (19) and the small-displacement inclined disc type axial plunger pump (20) are correspondingly arranged on two sides of the connecting body (9).
3. The tandem type large-displacement shield hydraulic pump according to claim 2, characterized in that: and a cylinder body I (7) of the large-displacement swash plate type axial plunger pump (19) is arranged opposite to a cylinder body II (11) of the small-displacement swash plate type axial plunger pump (20).
4. The tandem type large displacement shield hydraulic pump according to claim 1, 2 or 3, characterized in that: the axial plunger pump unit A comprises a shell I (3) and a pump body I, the pump body I is positioned in a cavity in the shell I (3), and the shell I (3) is connected with a connector (9) in a sealing mode; the pump body I comprises a cylinder body I (7) and a swash plate I (4), the cylinder body I (7) is fixedly connected to the drive through shaft (1) through a spline, a valve plate I (8) is arranged between the cylinder body I (7) and the connecting body (9), and the valve plate I (8) is fixed on the connecting body (9); be equipped with a plurality of axial cavity in cylinder body I (7), the axial cavity slides and is equipped with plunger I (6), and plunger I (6) are connected with sloping cam plate I (4) through ball pivot mechanism, and I (4) cover of sloping cam plate is established and is passed through on axle (1) and fix in casing I (3).
5. The tandem type large-displacement shield hydraulic pump according to claim 4, characterized in that: the ball hinge mechanism is including setting up ball portion and the I (21) of boots in plunger I (6) outer end, and I (21) of boots are articulated with the ball sphere, and I (21) of boots are connected with I (4) of swash plate through return stroke dish I (5).
6. The tandem type large-displacement shield hydraulic pump according to claim 5, characterized in that: the distributing hole on the distributing plate I (8) is respectively communicated with the high-pressure port (18) and the axial cavity; a lubricating fine hole is formed in the ball part at the outer end of the plunger I (6), and the lubricating fine hole is communicated with an axial cavity in the plunger I (6); the driving through shaft (1) is rotatably arranged in the shell I (3) through a first bearing assembly (23) and is sealed through the front cover (2).
7. The tandem type large-displacement shield hydraulic pump according to claim 5 or 6, characterized in that: the axial plunger pump unit B comprises a shell II (12) and a pump body II, the pump body II is positioned in a cavity inside the shell II (12), and the shell II (12) is connected with the connecting body (9) in a sealing mode; the pump body II comprises a cylinder body II (11) and a swash plate II (15), the cylinder body II (11) is fixedly connected to the drive through shaft (1) through a spline, a valve plate II (10) is arranged between the cylinder body II (11) and the connecting body (9), and the valve plate II (10) is fixed on the connecting body (9); a plurality of axial cavities are arranged in the cylinder body II (11), plungers II (13) are arranged in the axial cavities in a sliding mode, the plungers II (13) are connected with a swash plate II (15) through a spherical hinge mechanism, and the swash plate II (15) is sleeved on the driving through shaft (1) and fixed in the shell II (12).
8. The tandem type large-displacement shield hydraulic pump according to claim 7, characterized in that: the spherical hinge mechanism comprises a ball part and a sliding shoe II (22) which are arranged at the outer end of the plunger II (13), the sliding shoe II (22) is hinged with the spherical surface of the ball part, and the sliding shoe II (22) is connected with the swash plate II (15) through a return plate II (14).
9. The tandem type large-displacement shield hydraulic pump according to claim 8, characterized in that: the distributing hole on the distributing plate II (10) is respectively communicated with the high-pressure port (18) and the axial cavity; a lubricating fine hole is formed in the ball part at the outer end of the plunger II (13) and is communicated with the axial cavity in the plunger II (13); the drive through shaft (1) is rotatably arranged in the shell II (12) through a second bearing assembly (24) and is sealed through a rear cover (16).
10. The tandem type large-displacement shield hydraulic pump according to claim 8 or 9, characterized in that: and low-pressure channels (25) are arranged in the shell I (3) and the shell II (12), and the low-pressure channels (25) are communicated with the low-pressure port (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220638854.2U CN216950720U (en) | 2022-03-23 | 2022-03-23 | Tandem type large-displacement shield hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220638854.2U CN216950720U (en) | 2022-03-23 | 2022-03-23 | Tandem type large-displacement shield hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216950720U true CN216950720U (en) | 2022-07-12 |
Family
ID=82297747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220638854.2U Active CN216950720U (en) | 2022-03-23 | 2022-03-23 | Tandem type large-displacement shield hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216950720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733712A (en) * | 2023-07-18 | 2023-09-12 | 江苏津润液压股份有限公司 | Impeller supercharging sloping cam type axial plunger double pump |
-
2022
- 2022-03-23 CN CN202220638854.2U patent/CN216950720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733712A (en) * | 2023-07-18 | 2023-09-12 | 江苏津润液压股份有限公司 | Impeller supercharging sloping cam type axial plunger double pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7635255B2 (en) | Long piston hydraulic machines | |
| CN110230583B (en) | Plunger pump and plunger motor | |
| CN101418784A (en) | Positive and negative rotating axial plunger pump | |
| CN108301999B (en) | A kind of two-dimentional plunger pump of space cam transmission | |
| CN216950720U (en) | Tandem type large-displacement shield hydraulic pump | |
| CN110630461B (en) | Variable radial plunger pump | |
| CN110985325A (en) | Axial plunger pump motor and engineering machinery | |
| CN109798231A (en) | A kind of inclined disc type Small Plunger Pump | |
| CN113374665A (en) | Variable mechanism of through-shaft type swash plate plunger pump and motor | |
| CN209761643U (en) | Flow distribution sliding disc pair and plunger pump or motor comprising same | |
| CN101979867A (en) | Swash plate axial plunger type oil motor and assembly thereof | |
| CN201292923Y (en) | Positive and negative rotating axial plunger pump | |
| CN110500270B (en) | Bidirectional high-speed miniature plunger pump with inserted oil port | |
| CN212360691U (en) | Steering and walking integrated hydrostatic stepless speed change device | |
| CN209855979U (en) | Axial plunger pump or motor | |
| CN201236799Y (en) | Translational rotating compression device | |
| CN110131093A (en) | Runner piston synchronous cyclotron mechanism | |
| CN220452124U (en) | Impeller supercharging sloping cam type axial plunger double pump | |
| CN216842076U (en) | Bidirectional high-pressure high-speed axial plunger pump | |
| CN215486417U (en) | Variable mechanism of through-shaft type swash plate plunger pump and motor | |
| CN220622083U (en) | Miniature plunger pump suitable for batch production | |
| CN219081766U (en) | Crankshaft type radial plunger motor | |
| CN220828312U (en) | Integrated circulation liquid seal compressor | |
| CN211144718U (en) | Plunger pump integrated on automobile transmission shaft | |
| CN112177874B (en) | Swash plate driving and flow distribution integrated plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |