Cylinder body of hydraulic variable plunger pump

Abstract

The utility model relates to the technical field of plunger pumps, and discloses a hydraulic variable plunger pump cylinder which comprises a plunger pump, a storage bin is fixedly connected to the top of the outer surface of the plunger pump, a supporting plate is slidably connected to the inner surface of the storage bin, and a protection plate is connected to the outer surface of the supporting plate in a contact mode. The outer surface of the protection plate is slidably connected with the inner surface of the storage bin, and a telescopic assembly is arranged on the outer surface of the supporting plate. According to the transmission shaft protection device, the two sets of supporting plates and the two sets of protection plates are arranged, the transmission shaft can be comprehensively protected from the two sides, the top of the outer surface of one set of protection plates is rotationally connected with a connecting piece, and the right side of the outer surface of the connecting piece is fixedly connected with the top of the outer surface of the other set of protection plates through a bolt B; in this way, the two sets of protection plates can be firmly connected together to form a complete protection structure, and the transmission shaft is effectively prevented from being damaged by external factors in the transportation process.

Description

Technical Field

[0001] This utility model relates to the field of piston pump technology, and in particular to a hydraulic variable piston pump cylinder body. Background Technology

[0002] In some large industrial equipment such as injection molding machines and presses, in order to provide stable power output to the hydraulic system efficiently, a hydraulic variable displacement piston pump cylinder is used. Through the reciprocating motion of the piston in the cylinder, high-precision volume change can be achieved, thereby efficiently converting mechanical energy into hydraulic energy.

[0003] The cylinder block of a hydraulic variable displacement piston pump mainly consists of the cylinder body, pistons, distributor plate, swashplate, drive shaft, and bearings. The cylinder body serves as the basic structure, providing the piston's movement space and bearing pressure. The piston achieves oil suction and discharge through reciprocating motion. The distributor plate is responsible for oil distribution. The swashplate changes the piston stroke to regulate flow. The drive shaft transmits power. Bearings support rotating parts and reduce friction. Additionally, it may include auxiliary components such as seals and springs to ensure the cylinder block's sealing performance and functional integrity.

[0004] Considering that in practical applications, components such as the drive shaft on the plunger pump are easily affected by external factors during transportation, such as collisions and drops. These factors cause the drive shaft to come into contact with the outside world, such as the ground, which can damage the drive shaft and affect the normal operation of the plunger pump. Therefore, a hydraulic variable displacement plunger pump cylinder is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a hydraulic variable displacement piston pump cylinder body, which aims to solve the problem that in practical applications, the piston pump drive shaft is easily affected by external factors such as collision, wear, and foreign matter intrusion during operation, leading to damage to the drive shaft and thus affecting the normal operation of the piston pump.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic variable displacement piston pump cylinder body, including a piston pump, a storage compartment fixedly connected to the top of the outer surface of the piston pump, a support plate slidably connected to the inner surface of the storage compartment, a protective plate contacting the outer surface of the support plate, the outer surface of the protective plate slidably connected to the inner surface of the storage compartment, and a telescopic component provided on the outer surface of the support plate.

[0007] The telescopic assembly includes a hinge rod A, the right side of the outer surface of the hinge rod A is hinged and slidably connected to the inner surface of the support plate, the left side of the outer surface of the hinge rod A is hinged and slidably connected to the inner surface of the protective plate, and a hinge rod B is rotatably connected to the middle of the inner surface of the hinge rod A. The outer surface of the hinge rod B is hinged and slidably connected to the inner surfaces of both the support plate and the protective plate.

[0008] As a further description of the above technical solution:

[0009] Both the support plate and the protective plate are provided in two sets. One set of the protective plate has a connector rotatably connected to the top of the outer surface of the outer surface of the outer set of the protective plate. The right side of the outer surface of the connector is fixedly connected to the top of the outer surface of the other set of the protective plate by bolt B.

[0010] As a further description of the above technical solution:

[0011] The outer surface of the plunger pump is provided with an oil inlet and outlet assembly, which includes an oil pump port. The oil pump port is located at the top of the outer surface of the plunger pump, and an oil inlet is located at the bottom of the outer surface of the plunger pump.

[0012] As a further description of the above technical solution:

[0013] The top of the outer surface of the plunger pump is rotatably connected to a drive shaft, and the inner surface of the protective plate is slidably connected to the outer surface of the drive shaft.

[0014] As a further description of the above technical solution:

[0015] A lifting ring is fixedly connected to the front end of the outer surface of the plunger pump.

[0016] As a further description of the above technical solution:

[0017] The plunger pump has a groove on the top of its inner surface, and the bottom of the outer surface of the protective plate is slidably connected to the inner surface of the groove.

[0018] As a further description of the above technical solution:

[0019] The top of the outer surface of the storage compartment is threaded with a bolt A, and the rear end of the outer surface of the bolt A is threaded to the bottom of the outer surface of the support plate.

[0020] As a further description of the above technical solution:

[0021] The outer surface of the protective plate has a groove on the top, and the telescopic component has multiple sets.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by setting two sets of support plates and protective plates, the transmission shaft can be fully protected from both sides. A connector is rotatably connected to the top of the outer surface of one set of protective plates. The right side of the outer surface of the connector is fixedly connected to the top of the outer surface of the other set of protective plates by bolt B. In this way, the two sets of protective plates can be firmly connected together to form a complete protective structure, effectively preventing damage to the transmission shaft from external factors during transportation.

[0024] 2. In this utility model, a storage compartment is fixedly connected to the top of the outer surface of the plunger pump. The storage compartment is used to store the support plate and the protective plate. When the protection is not required, they can be stored in it, saving space and facilitating the overall layout and transportation of the equipment. When it is necessary to fix the position of the support plate in the storage compartment, it can be achieved by tightening bolt A, which ensures the stability of the storage state. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of a hydraulic variable displacement piston pump cylinder body proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the unfolded structure of the protective plate of the cylinder body of a hydraulic variable displacement piston pump proposed in this utility model;

[0027] Figure 3 This utility model proposes a hydraulic variable displacement piston pump cylinder body. Figure 1 Enlarged structural diagram at point A in the middle;

[0028] Figure 4 This utility model proposes a hydraulic variable displacement piston pump cylinder body. Figure 2 Enlarged structural diagram at point B.

[0029] Legend:

[0030] 1. Plunger pump; 2. Oil inlet / outlet assembly; 201. Pump port; 202. Oil inlet; 3. Lifting ring; 4. Drive shaft; 5. Storage compartment; 6. Support plate; 7. Protective plate; 8. Telescopic assembly; 801. Hinge rod A; 802. Hinge rod B; 9. Connector; 10. Bolt A; 11. Bolt B; 12. Slide groove; 13. Slot. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-2This utility model provides an embodiment of a hydraulic variable displacement piston pump cylinder body, including a piston pump 1. A storage compartment 5 is fixedly connected to the top of the outer surface of the piston pump 1. The storage compartment 5 is used to store and store a support plate 6 and a protective plate 7. When protection is not required, they can be stored in it, saving space and facilitating the overall layout and transportation of the equipment. The support plate 6 is slidably connected to the inner surface of the storage compartment 5. The support plate 6 slides within the storage compartment 5 and can extend or retract from the storage compartment 5 according to actual usage needs, providing a support base for the protective plate 7. The outer surface of the support plate 6 is in contact with the protective plate 7. The support plate 6 is in contact with the contact plate and can be moved to the position that needs protection under the support of the support plate 6, so as to protect the relevant components of the plunger pump 1. The outer surface of the protective plate 7 is slidably connected to the inner surface of the storage compartment 5. The protective plate 7 slides in the storage compartment 5, so that the protective plate 7 can be smoothly pulled out and retracted from the storage compartment 5, ensuring the convenience of the protective operation. The outer surface of the support plate 6 is provided with a telescopic component 8. The telescopic component 8 allows the protective plate 7 to move telescopically on the support plate 6, so that the position and coverage of the protective plate 7 can be flexibly adjusted according to the actual position of the drive shaft 4 and the protection requirements.

[0033] Reference Figures 1-2 The telescopic assembly 8 includes a hinge rod A801. The right side of the outer surface of the hinge rod A801 ​​is hinged and slidably connected to the inner surface of the support plate 6. This hinged and slidable connection allows the hinge rod A801 ​​to rotate and slide flexibly on the support plate 6, thereby driving the protective plate 7 to telescopically move. The left side of the outer surface of the hinge rod A801 ​​is hinged and slidably connected to the inner surface of the protective plate 7. This connection between the hinge rod A801 ​​and the protective plate 7 ensures that the protective plate 7 can telescopically move with the movement of the hinge rod A801. A hinge rod B802 is rotatably connected to the middle of the inner surface of hinge rod A801. The rotatable connection of hinge rod B802 allows hinge rods A801 ​​to cooperate and work together, further enhancing the stability and flexibility of the telescopic assembly 8. The outer surface of hinge rod B802 is hinged and slidably connected to the inner surface of support plate 6 and inner surface of protective plate 7. This connection method ensures that hinge rod B802 can transmit motion and force between support plate 6 and protective plate 7, enabling the telescopic assembly 8 to work smoothly and reliably.

[0034] Reference Figures 2-4Both the support plate 6 and the protective plate 7 are provided in two sets. The two sets of support plates 6 and protective plates 7 can provide comprehensive protection for the drive shaft 4 from both sides, improve the protection effect, and enhance the stability and reliability of the protection. The top of the outer surface of one set of protective plates 7 is rotatably connected to the connector 9. The rotatable connection of the connector 9 allows the one set of protective plates 7 to rotate around it, which is convenient for connecting and fixing with the other set of protective plates 7, thus achieving closed protection for the drive shaft 4. The right side of the outer surface of the connector 9 is fixedly connected to the top of the outer surface of the other set of protective plates 7 by bolt B11. Fixing the connector 9 and the other set of protective plates 7 by bolt B11 can firmly connect the two sets of protective plates 7 together to form a complete protective structure, effectively preventing damage to the drive shaft 4 from external factors.

[0035] Reference Figures 1-2 The outer surface of the plunger pump 1 is provided with an inlet / outlet assembly 2. The inlet / outlet assembly 2 is a key component for the plunger pump 1 to realize the hydraulic function. It is responsible for the input and output of liquid and ensures the normal operation of the hydraulic system. The inlet / outlet assembly 2 includes a pump port 201, which is used to output the hydraulic oil pressurized by the plunger pump 1 to other components of the hydraulic system to provide power to the system. The pump port 201 is opened at the top of the outer surface of the plunger pump 1. Setting the pump port 201 at the top of the outer surface of the plunger pump 1 facilitates the connection with the pipelines of other components in the hydraulic system, making the output of hydraulic oil smoother. An oil inlet 202 is opened at the bottom of the outer surface of the plunger pump 1. The oil inlet 202 is used to introduce external hydraulic oil into the interior of the plunger pump 1 to provide the required liquid medium for the operation of the plunger pump 1.

[0036] Reference Figures 1-2 A drive shaft 4 is rotatably connected to the top of the outer surface of the plunger pump 1. The drive shaft 4 transmits power to the plunger pump 1, enabling it to work normally and pressurize and deliver hydraulic oil. The inner surface of the protective plate 7 is slidably connected to the outer surface of the drive shaft 4. This slidable connection ensures that the protective plate 7 protects the drive shaft 4 without affecting its normal rotation. A lifting ring 3 is fixedly connected to the front end of the outer surface of the plunger pump 1. The lifting ring 3 facilitates the lifting and handling of the plunger pump 1, providing a convenient point of leverage during the installation, maintenance, and transportation of the equipment. A groove 12 is provided on the top of the inner surface of the plunger pump 1. The groove 12 provides guidance and support for the sliding of the protective plate 7, ensuring that the protective plate 7 remains stable during sliding and does not shift. The bottom of the outer surface of the protective plate 7 is slidably connected to the inner surface of the groove 12, allowing the protective plate 7 to move smoothly along the groove 12 and accurately reach the position requiring protection.

[0037] Reference Figures 1-3A bolt A10 is threaded through and connected to the top of the outer surface of the storage compartment 5. Bolt A10 is used to fix the position of the support plate 6 inside the storage compartment 5. When it is necessary to fix the support plate 6 inside the storage compartment 5 or to pull it out and fix it in a certain position, it is achieved by tightening or unscrewing the bolt A10. The rear end of the outer surface of the bolt A10 is threaded to the bottom of the outer surface of the support plate 6. This threaded connection method can provide a reliable fixing effect, ensuring that the support plate 6 will not loosen during operation and ensuring the stability of the protective structure. A groove 13 is opened on the top of the outer surface of the protective plate 7. The groove 13 is set so that the operator can easily move the protective plate 7, so that the protective plate 7 can be smoothly pulled out or retracted from the storage compartment 5, improving the convenience of operation. There are multiple sets of telescopic components 8. The multiple sets of telescopic components 8 can enhance the stability and reliability of the telescopic movement of the protective plate 7, so that the protective plate 7 is subjected to more even force during the telescopic process, avoiding deformation or jamming.

[0038] Working principle: When it is necessary to protect the drive shaft 4 on the plunger pump 1, first unscrew bolt A10 to release the fixation of the support plate 6, then move the slot 13 on the protective plate 7 to pull out one set of protective plates 7 and support plate 6 from the storage compartment 5, then screw bolt A10 back in to fix the support plate 6 in the extended state, then pull the protective plate 7 to move it directly above the drive shaft 4, and then repeat the above operation to pull out and fix the other set of support plate 6 and protective plate 7, then rotate the connector 9 on one set of protective plates 7 outward so that the fixing hole on the right side of the connector 9 is aligned with the top of the other set of protective plates 7, and then use bolt B11 to fix the two sets of protective plates 7 together through the connector 9, thereby achieving the effect of protecting the drive shaft 4 on the plunger pump 1 with the protective plates 7.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic variable-displacement piston pump block comprising a piston pump (1), characterized in that: The outer surface top of the plunger pump (1) is fixedly connected with a receiving bin (5), the inner surface of the receiving bin (5) is slidably connected with a supporting plate (6), the outer surface of the supporting plate (6) is contactingly connected with a protective plate (7), the outer surface of the protective plate (7) is slidably connected with the inner surface of the receiving bin (5), and the outer surface of the supporting plate (6) is provided with a telescopic assembly (8). The telescopic assembly (8) comprises a hinged rod A (801), the outer surface right side of the hinged rod A (801) is hingedly and slidably connected with the inner surface of the supporting plate (6), the outer surface left side of the hinged rod A (801) is hingedly and slidably connected with the inner surface of the protective plate (7), and the inner surface middle part of the hinged rod A (801) is rotatably connected with a hinged rod B (802), and the outer surfaces of the hinged rod B (802) are hingedly and slidably connected with the inner surfaces of the supporting plate (6) and the protective plate (7).

2. A hydraulic variable-displacement piston pump block according to claim 1, characterized in that: The supporting plate (6) and the protective plate (7) are both provided with two groups, the outer surface top of one group of the protective plate (7) is rotatably connected with a connecting piece (9), and the outer surface right side of the connecting piece (9) is fixedly connected with the outer surface top of another group of the protective plate (7) through bolts B (11).

3. A hydraulic variable-displacement piston pump block as claimed in claim 1, characterized in that: The outer surface of the plunger pump (1) is provided with an oil inlet and outlet assembly (2), the oil inlet and outlet assembly (2) comprises a pump oil port (201), the pump oil port (201) is formed in the outer surface top of the plunger pump (1), and the outer surface bottom of the plunger pump (1) is provided with an oil inlet port (202).

4. A hydraulic variable-displacement piston pump block as claimed in claim 1, characterized in that: The outer surface top of the plunger pump (1) is rotatably connected with a transmission shaft (4), and the inner surface of the protective plate (7) is slidably connected with the outer surface of the transmission shaft (4).

5. A hydraulic variable-displacement piston pump block as claimed in claim 1, characterized in that: The outer surface front end of the plunger pump (1) is fixedly connected with a lifting ring (3).

6. A hydraulic variable-displacement piston pump block as claimed in claim 1, characterized in that: The inner surface top of the plunger pump (1) is provided with a sliding groove (12), and the outer surface bottom of the protective plate (7) is slidably connected with the inner surface of the sliding groove (12).

7. A hydraulic variable-displacement piston pump block as claimed in claim 1, characterized in that: The outer surface top of the receiving bin (5) penetrates and is threadedly connected with a bolt A (10), and the outer surface rear end of the bolt A (10) is threadedly connected with the outer surface bottom of the supporting plate (6).

8. A hydraulic variable-displacement piston pump block as claimed in claim 1, characterized in that: The outer surface top of the protective plate (7) is provided with a pulling groove (13), and the telescopic assembly (8) is provided with a plurality of groups.

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