Two-dimensional plunger motor combined pump

Abstract

The utility model relates to the field of plunger pump equipment, in particular to a two-dimensional plunger motor combined pump, which comprises a driving part and a plunger part, the driving part comprises a motor body, a transmission shaft is arranged at the output end of the motor body, a switching shell used for connecting the plunger part is arranged outside the transmission shaft, and the plunger part is arranged in the switching shell. The plunger part comprises a cylinder body connected with the switching shell, a plunger is arranged in the cylinder body, a cross shaft and a straight shaft are arranged at the two ends of the plunger respectively, roller sets are arranged on the cross shaft and the straight shaft, driving guide rails used in cooperation with the roller sets are arranged at the two ends of the cylinder body, and the driving guide rails are connected with the driving guide rails. The plunger transversely reciprocates during rotation through cooperation of the roller set driving guide rail, connection of the driving part and the plunger part can be rapidly completed through the switching shell, the structure is simple, operation is convenient, and the whole equipment is compact in structure and smaller in occupied space.

Description

Technical Field

[0001] The utility model relates to the field of plunger pump equipment, in particular to a two-dimensional plunger motor combined pump. Background Art

[0002] Rotary one-way hydraulic pumps are primarily used in hydraulic systems with a certain amount of back pressure in the tank, providing high pressure and power. Hydraulic pumps play a critical role in hydraulic systems, with their performance directly impacting the control performance of the entire hydraulic system, and thus the overall quality and technical level of high-end manufacturing equipment. Hydraulic pumps are now widely used in numerous key engineering fields, such as large-scale CNC equipment and construction machinery; military and aerospace applications such as missiles, satellites, and ships; and automotive and mobile machinery, playing a vital role in the development of the national economy.

[0003] Due to different working conditions, traditional two-dimensional plunger pumps are often designed with different displacements, different sizes, and specifications for different working environments. Chinese patent CN117287364A discloses a two-dimensional pump that can achieve high-pressure and high-speed operation, but its disadvantages are that it is relatively heavy, relatively large in size, and has an increased sealing structure. This is because in the process of connecting it to the working valve block through the drive shaft, due to space limitations, it causes redundant processing parts, with additional connecting flanges, keys, and drive shafts, resulting in problems such as large space occupation and heavy weight. The drive shaft parts are manufactured with high precision and are easily damaged during operation due to strength issues, which in turn increases production and maintenance costs. Utility Model Content

[0004] In order to solve the above problems, an embodiment of the present utility model provides a two-dimensional plunger motor combination pump with a simple structure and smaller occupied space.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present utility model specifically adopts the following technical solutions: a two-dimensional plunger motor combination pump, including a driving part and a plunger part, the driving part includes a motor body, the output end of the motor body is provided with a transmission shaft, the outside of the transmission shaft is provided with a transfer shell for connecting the plunger part, the plunger part includes a cylinder body connected to the transfer shell, a plunger is provided in the cylinder body, a cross shaft and a straight shaft are respectively provided at both ends of the plunger, the cross shaft and the straight shaft are both provided with a roller group, and both ends of the cylinder body are provided with a drive guide rail used in conjunction with the roller group.

[0006] As a further improvement of the above technical solution:

[0007] A through hole for installing a plunger is provided in the middle of the cylinder body, and sealing sleeves are provided at both ends of the through hole.

[0008] The plunger comprises a penetration portion, and both ends of the penetration portion are provided with limiting bosses for mounting a cross shaft and a straight shaft, and the outer sides of the two limiting bosses are both provided with a pressing portion.

[0009] A high-pressure oil groove and a low-pressure right groove are provided on the side wall of the penetration portion, and a high-pressure oil hole and a low-pressure right hole corresponding to the positions of the high-pressure oil groove and the low-pressure right groove are provided on the side wall of the cylinder body.

[0010] A connecting sleeve is provided at one end of the cylinder body facing the driving part, and an extension plate connected to the driving part is provided at the end of the connecting sleeve.

[0011] The end of the adapter shell is provided with a flange connected to the connecting sleeve, and the side wall of the flange is provided with a avoidance groove corresponding to the position of the extension plate.

[0012] The roller assemblies on the cross shaft and the straight shaft each include two symmetrically distributed rollers, and there is a 90° phase difference between the two roller assemblies during installation.

[0013] The driving guide rail includes a mounting sleeve arranged at the end of the cylinder body, and a rolling curved surface is provided at one end of the mounting sleeve facing the roller assembly.

[0014] The beneficial effects of the embodiments of the present utility model are as follows: the two-dimensional plunger motor combination pump comprises a driving part and a plunger part, the driving part comprises a motor body, the output end of the motor body is provided with a transmission shaft, the outside of the transmission shaft is provided with a transfer shell for connecting the plunger part, the plunger part comprises a cylinder body connected to the transfer shell, a plunger is provided in the cylinder body, a cross shaft and a straight shaft are respectively provided at both ends of the plunger, the cross shaft and the straight shaft are both provided with a roller group, and a driving guide rail used in conjunction with the roller group is provided at both ends of the cylinder body, the cooperation of the roller group driving the guide rail is utilized to realize the lateral reciprocating motion of the plunger when rotating, the connection between the driving part and the plunger part can be quickly completed through the transfer shell, the structure is simple and easy to operate, and the entire device is compact in structure and occupies less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the cross shaft in the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the straight shaft in the utility model;

[0019] Figure 5This is a schematic structural diagram of the cylinder body in the utility model;

[0020] Figure 6 This is a schematic structural diagram of the plunger in the utility model;

[0021] Figure 7 This is a schematic structural diagram of the drive guide rail in the utility model;

[0022] Figure 8 It is a structural schematic diagram of the sealing sleeve in the utility model.

[0023] In the figure: 1. Motor body; 2. Drive shaft; 3. Adapter housing; 4. Cylinder body; 5. Plunger; 6. Cross shaft; 7. Slotted shaft; 8. Drive guide rail; 9. Through hole; 10. Sealing sleeve; 11. Penetration part; 12. Limiting boss; 13. Pressing part; 14. High-pressure oil groove; 15. Low-pressure right groove; 16. High-pressure oil hole; 17. Low-pressure right hole; 18. Extension plate; 19. Flange; 20. Avoidance groove; 21. Mounting sleeve; 22. Rolling surface; 23. Connecting sleeve; 24. Roller. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0025] like Figure 1 As shown, the two-dimensional plunger motor combination pump of this embodiment includes a drive unit and a plunger unit. The drive unit includes a motor body 1. The output end of the motor body 1 is provided with a transmission shaft 2. The outside of the transmission shaft 2 is provided with a transfer housing 3 for connecting the plunger unit. The plunger unit includes a cylinder body 4 connected to the transfer housing 3. A plunger 5 is provided in the cylinder body 4. A cross shaft 6 and a straight shaft 7 are provided at both ends of the plunger 5. A roller group is provided on each of the cross shaft 6 and the straight shaft 7. A drive guide rail 8 used in conjunction with the roller group is provided at both ends of the cylinder body 4. The motor body 1 The housing and the adapter housing 3 are integrally cast, and the transmission shaft 2 is connected to the cross shaft 6 to realize the synchronous rotation of the motor body 1 and the plunger 5. Then, the connection between the adapter housing 3 and the cylinder body 4 is utilized to realize the connection between the motor body 1 and the cylinder body 4. After the installation is completed, the plunger 5 is driven to rotate by the rotation of the motor body 1. During the rotation process, the roller group on the cross shaft 6 and the straight shaft 7 cooperates with the rolling surface 22 on the side wall of the drive guide rail 8 to realize the reciprocating displacement of the plunger 5 in the cylinder body 4, thereby realizing the oil suction and discharge operations of the entire plunger pump.

[0026] A through hole 9 for installing the plunger 5 is provided in the middle of the cylinder body 4, and sealing sleeves 10 are provided at both ends of the through hole 9. The inner side wall of the sealing sleeve 10 is matched with a small gap with the plunger 5, and the outer surface is matched with the gap of the cylinder body 4 to form a variable closed cavity with the plunger 5 and the cylinder body 4.

[0027] The plunger 5 includes a penetration portion 11, and both ends of the penetration portion 11 are provided with limiting bosses 12 for installing the cross shaft 6 and the straight shaft 7. The outer sides of the two limiting bosses 12 are provided with clamping portions 13, and the side walls of the clamping portions 13 are provided with threads, and the clamping portions 13 are provided with a tightening nut.

[0028] A high-pressure oil groove 14 and a low-pressure right groove 15 are provided on the side wall of the penetration portion 11, and a high-pressure oil hole 16 and a low-pressure right hole 17 corresponding to the positions of the high-pressure oil groove 14 and the low-pressure right groove 15 are marked on the side wall of the cylinder body 4 in red paper.

[0029] A connecting sleeve 23 is provided at one end of the cylinder body 4 facing the driving part. An extension plate 18 connected to the driving part is provided at the end of the connecting sleeve 23. The extension plate 18 is provided with a threaded hole. The connecting sleeve 23 and the adapter housing 3 are locked by screws.

[0030] A flange 19 connected to the connecting sleeve 23 is provided at the end of the adapter housing 3 , and a relief groove 20 corresponding to the position of the extension plate 18 is provided on the side wall of the flange 19 .

[0031] The roller assemblies on the cross shaft 6 and the straight shaft 7 each include two symmetrically distributed rollers 24 , and there is a 90° phase difference between the two roller assemblies during installation.

[0032] The driving guide rail 8 includes a mounting sleeve 21 located at the end of the cylinder body 4. A rolling surface 22 is provided at one end of the mounting sleeve 21 facing the roller group. The design of the rolling surface 22 enables the roller to drive the plunger 5 to move back and forth horizontally on the X-axis during rotation.

[0033] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.

[0036] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A two-dimensional plunger motor combination pump, comprising a drive unit and a plunger unit, characterized in that: The driving part comprises a motor body (1), an output end of the motor body (1) is provided with a transmission shaft (2), and an adapter housing (3) for connecting to a plunger part is provided on the outside of the transmission shaft (2); The plunger portion comprises a cylinder body (4) connected to a transfer housing (3), a plunger (5) is arranged in the cylinder body (4), a cross shaft (6) and a straight shaft (7) are respectively arranged at both ends of the plunger (5), a roller group is arranged on both the cross shaft (6) and the straight shaft (7), and a driving guide rail (8) used in conjunction with the roller group is arranged at both ends of the cylinder body (4).

2. The two-dimensional plunger motor combination pump according to claim 1, characterized in that: A through hole (9) for installing a plunger (5) is provided in the middle of the cylinder body (4), and sealing sleeves (10) are provided at both ends of the through hole (9).

3. The two-dimensional plunger motor combination pump according to claim 2, characterized in that: The plunger (5) comprises a penetration portion (11), and both ends of the penetration portion (11) are provided with limiting bosses (12) for mounting a cross shaft (6) and a straight shaft (7), and the outer sides of the two limiting bosses (12) are both provided with a pressing portion (13).

4. The two-dimensional plunger motor combination pump according to claim 3, characterized in that: A high-pressure oil groove (14) and a low-pressure right groove (15) are provided on the side wall of the penetration portion (11), and a high-pressure oil hole (16) and a low-pressure right hole (17) are provided on the side wall of the cylinder body (4) in red paper corresponding to the positions of the high-pressure oil groove (14) and the low-pressure right groove (15).

5. The two-dimensional plunger motor combination pump according to claim 1, characterized in that: A connecting sleeve (23) is provided at one end of the cylinder body (4) facing the driving part, and an extension plate (18) connected to the driving part is provided at the end of the connecting sleeve (23).

6. The two-dimensional plunger motor combination pump according to claim 5, characterized in that: The end of the adapter housing (3) is provided with a flange (19) connected to the connecting sleeve (23), and the side wall of the flange (19) is provided with a avoidance groove (20) corresponding to the position of the extension plate (18).

7. The two-dimensional plunger motor combination pump according to claim 1, characterized in that: The roller assemblies on the cross shaft (6) and the straight shaft (7) each include two symmetrically distributed rollers (24), and the two roller assemblies have a phase difference of 90° when installed.

8. The two-dimensional plunger motor combination pump according to claim 1, characterized in that: The driving guide rail (8) comprises a mounting sleeve (21) arranged at the end of the cylinder body (4); and a rolling curved surface (22) is provided at one end of the mounting sleeve (21) facing the roller assembly.

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