High-stability hydraulic driving shaft device

Abstract

The utility model discloses a high-stability hydraulic drive shaft device, which relates to the technical field of hydraulic pumps and comprises a shaft body, a plurality of through holes are formed in the outer wall of the shaft body, and heat dissipation components are arranged on the inner walls of the through holes; the heat dissipation assembly comprises a sealing cylinder, an annular cover, a plurality of springs, a mounting plate, a connecting rod and a sealing cover, the sealing cylinder is fixedly installed on the inner wall of the through hole, the annular cover is fixedly installed at the top end of the sealing cylinder, the springs are fixedly installed at one end of the annular cover, and the mounting plate is fixedly installed at one end of the springs; the sealing cover is fixedly mounted at one end of the connecting rod; according to the technical scheme, the heat dissipation assembly is arranged, the heat dissipation holes can be sealed when the driving shaft does not rotate, when the driving shaft rotates, the heat dissipation assembly is opened through centrifugal force generated when the driving shaft rotates, heat in the driving shaft is dissipated, the heat dissipation effect is good, dust accumulated in the through holes can be reduced, and the service life of the driving shaft is prolonged. And the driving shaft is more stable when being used.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pumps, in particular to a high-stability hydraulic drive shaft device. Background Art

[0002] The hydraulic pump is a hydraulic system power element that is driven by an engine or an electric motor and converts mechanical energy into hydraulic energy. It is a power element of the hydraulic system and is driven by an engine or an electric motor. It sucks oil from the hydraulic oil tank, forms pressure oil and discharges it to the actuator. A drive shaft is provided on the hydraulic pump, and the drive shaft extends to the outside for connecting to the output shaft of the motor. The hydraulic drive shaft can be selected as a solid shaft or a hollow shaft according to the situation. The internal heat dissipation of the hollow shaft requires heat dissipation holes to be set on the outer wall. Dust is easily accumulated at the heat dissipation holes. Dust enters the center hole, which will affect the heat dissipation and working stability of the drive shaft. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a high-stability hydraulic drive shaft device, so as to solve the problem that the internal heat dissipation of the hollow shaft in the prior art requires the provision of heat dissipation holes on the outer wall, and dust is easily accumulated at the heat dissipation holes, which affects the heat dissipation and working stability of the drive shaft.

[0004] In view of this, the utility model provides a high-stability hydraulic drive shaft device, including a shaft body, wherein the outer wall of the shaft body is provided with a plurality of through holes, and the inner wall of the through hole is provided with a heat dissipation component;

[0005] The heat dissipation assembly includes a sealing cylinder, an annular cover, a plurality of springs, a mounting plate, a connecting rod and a sealing cover. The sealing cylinder is fixedly mounted on the inner wall of the through hole, the annular cover is fixedly mounted on the top of the sealing cylinder, a plurality of springs are fixedly mounted on one end of the annular cover, the mounting plate is fixedly mounted on one end of the spring, the connecting rod is fixedly mounted on one side of the mounting plate, and the sealing cover is fixedly mounted on one end of the connecting rod.

[0006] Optionally, one end of the connecting rod extends to the outside of one end of the sealing cylinder, the sealing cover is located on the outside side of the annular cover at one end of the sealing cylinder, and the sealing cover is engaged with the inner wall of the annular cover.

[0007] Optionally, a plurality of external splines are integrally formed on the outer wall of the shaft.

[0008] Optionally, a center hole is opened at one end of the shaft body, and the through hole is connected to the inside of the center hole.

[0009] Optionally, a groove is formed at the other end of the shaft.

[0010] Optionally, a reinforcement piece is welded to the outer wall of the central hole, a fixing ring is fixedly mounted on one side of the reinforcement piece, and a plurality of blades are fixedly mounted on the outer wall of the fixing ring.

[0011] Optionally, the heat dissipation assembly further includes one or more wear-resistant washers located on the contact surface between the sealing cover and the annular cover.

[0012] Optionally, the external splines precisely mesh with internal components of a connected hydraulic pump.

[0013] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0014] 1. The utility model provides a high-stability hydraulic drive shaft device. By setting a heat dissipation component, the heat dissipation holes can be sealed when the drive shaft is not rotating. When the drive shaft is rotating, the heat dissipation holes are opened by the centrifugal force when the drive shaft rotates, so that the heat inside the drive shaft can be dissipated. The heat dissipation effect is good, and dust accumulation in the through hole can be reduced, making the drive shaft more stable when in use.

[0015] 2. The utility model provides a high-stability hydraulic drive shaft device, which drives the fixed ring and the blades to rotate synchronously when the drive shaft rotates, thereby increasing the air flow in the center hole and allowing the heat inside the center hole to be discharged faster.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the shaft body of the utility model;

[0020] Figure 3 This is the installation diagram of the sealing cylinder of the utility model;

[0021] Figure 4 It is a cross-sectional view of the sealing cylinder of the utility model.

[0022] Explanation of the accompanying drawings: 1. shaft body; 2. external spline; 3. center hole; 4. through hole; 5. reinforcement; 6. fixing ring; 7. blade; 8. sealing cylinder; 9. annular cover; 10. spring; 11. mounting plate; 12. connecting rod; 13. sealing cover. DETAILED DESCRIPTION

[0023] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0024] A high-stability hydraulic drive shaft device according to an embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] For easier understanding, see Figures 1 to 4 The utility model provides an embodiment of a high-stability hydraulic drive shaft device, including a shaft body 1, a plurality of through holes 4 are opened on the outer wall of the shaft body 1, and a heat dissipation component is arranged on the inner wall of the through hole 4; the heat dissipation component includes a sealing cylinder 8, an annular cover 9, a plurality of springs 10, a mounting plate 11, a connecting rod 12 and a sealing cover 13, the sealing cylinder 8 is fixedly mounted on the inner wall of the through hole 4, the annular cover 9 is fixedly mounted on the top of the sealing cylinder 8, a plurality of springs 10 are fixedly mounted on one end of the annular cover 9, the mounting plate 11 is fixedly mounted on one end of the spring 10, the connecting rod 12 is fixedly mounted on one side of the mounting plate 11, and the sealing cover 13 is fixedly mounted on one end of the connecting rod 12. The heat dissipation component also includes one or more wear-resistant washers, which are located on the contact surface between the sealing cover 13 and the annular cover 9, and are used to reduce wear under high-speed rotation and extend the service life. The precise engagement of the external spline 2 with the internal components of the connected hydraulic pump ensures a firm connection through precise dimensional tolerance control, thereby reducing vibration and energy loss during transmission.

[0027] It should be noted that, by setting up a heat dissipation component, the heat dissipation hole can be sealed when the drive shaft is not rotating, and when it rotates, the centrifugal force of the drive shaft is used to open it, so that the heat inside the drive shaft can be dissipated, the heat dissipation effect is good, and the dust accumulation in the through hole 4 can be reduced, making the drive shaft more stable when in use; the through hole 4 can be sealed by setting up an annular cover 9 and a sealing cover 13, and the sealing cover 13 can be supported by the spring 10 to press on one side of the annular cover 9.

[0028] In some embodiments, Figure 4 As shown, one end of the connecting rod 12 extends to the outside of one end of the sealing cylinder 8, and the sealing cover 13 is located on the outside side of the annular cover 9 at one end of the sealing cylinder 8, and the sealing cover 13 is engaged with the inner wall of the annular cover 9.

[0029] It should be noted that when the drive shaft rotates, the mounting plate 11 is rectangular, and the mounting plate 11, the connecting rod 12 and the sealing cover 13 are subjected to the centrifugal force when the drive shaft rotates, so that the mounting plate 11, the connecting rod 12 and the sealing cover 13 move toward the outside of the outer wall of the shaft body 1, open the through hole 4, and dissipate the heat inside the shaft body 1.

[0030] In some embodiments, Figure 2 As shown, a plurality of external splines 2 are integrally formed on the outer wall of the shaft body 1, a center hole 3 is opened at one end of the shaft body 1, a through hole 4 is connected to the inside of the center hole 3, and a groove is opened at the other end of the shaft body 1.

[0031] It should be noted that the shaft body 1 can be connected to the gears and other parts inside the hydraulic pump through the external spline 2, and can be connected to the coupling by providing a groove.

[0032] In this example, part of the through hole 4 can be opened on the outer wall surface of the shaft body 1 exposed to the outside to increase the heat dissipation effect. By setting a reinforcement member 5, the reinforcement member 5 is cross-shaped and is installed in the center hole 3 by welding, the strength of the center hole 3 of the shaft body 1 can be increased.

[0033] In this example, the sealing tube 8 can be fixed to the inner wall of the through hole 4 by welding.

[0034] Example 2

[0035] In some embodiments, Figure 2 As shown, a reinforcement member 5 is welded to the outer wall of the central hole 3 , a fixing ring 6 is fixedly installed on one side of the reinforcement member 5 , and a plurality of blades 7 are fixedly installed on the outer wall of the fixing ring 6 .

[0036] It should be noted that by providing the fixing ring 6 and the blades 7, when the driving shaft rotates, the fixing ring 6 and the blades 7 are driven to rotate synchronously, which can increase the air flow in the center hole 3 and enable the heat inside the center hole 3 to be discharged faster.

[0037] Working principle: When the drive shaft does not rotate, the spring 10 can support the sealing cover 13 to press on one side of the annular cover 9. When the drive shaft rotates, the mounting plate 11 is rectangular, and the mounting plate 11, the connecting rod 12 and the sealing cover 13 are subjected to the centrifugal force when the drive shaft rotates, so that the mounting plate 11, the connecting rod 12 and the sealing cover 13 move toward the outside of the outer wall of the shaft body 1, open the through hole 4, and dissipate the heat inside the shaft body 1.

[0038] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high stability hydraulic drive shaft device, characterized in that: It comprises a shaft body (1), the outer wall of the shaft body (1) is provided with a plurality of through holes (4), and the inner wall of the through hole (4) is provided with a heat dissipation component; The heat dissipation assembly comprises a sealing cylinder (8), an annular cover (9), a plurality of springs (10), a mounting plate (11), a connecting rod (12) and a sealing cover (13); the sealing cylinder (8) is fixedly mounted on the inner wall of the through hole (4); the annular cover (9) is fixedly mounted on the top of the sealing cylinder (8); the plurality of springs (10) are fixedly mounted on one end of the annular cover (9); the mounting plate (11) is fixedly mounted on one end of the spring (10); the connecting rod (12) is fixedly mounted on one side of the mounting plate (11); and the sealing cover (13) is fixedly mounted on one end of the connecting rod (12).

2. A high stability hydraulic drive shaft device according to claim 1, characterized in that: One end of the connecting rod (12) extends to the outside of one end of the sealing cylinder (8), and the sealing cover (13) is located on the outside of the annular cover (9) at one end of the sealing cylinder (8), and the sealing cover (13) is engaged with the inner wall of the annular cover (9).

3. A high stability hydraulic drive shaft device according to claim 1, characterized in that: The outer wall of the shaft body (1) is integrally formed with a plurality of external splines (2).

4. A high stability hydraulic drive shaft device according to claim 1, characterized in that: A center hole (3) is formed at one end of the shaft body (1), and the through hole (4) is connected to the inside of the center hole (3).

5. A high stability hydraulic drive shaft device according to claim 1, characterized in that: The other end of the shaft body (1) is provided with a groove.

6. A high stability hydraulic drive shaft device according to claim 4, characterized in that: A reinforcing member (5) is welded to the outer wall of the central hole (3), a fixing ring (6) is fixedly mounted on one side of the reinforcing member (5), and a plurality of blades (7) are fixedly mounted on the outer wall of the fixing ring (6).

7. A high stability hydraulic drive shaft device according to claim 1, characterized in that: The heat dissipation assembly further comprises one or more wear-resistant washers, which are located on the contact surface between the sealing cover (13) and the annular cover (9).

8. The high stability hydraulic drive shaft device according to claim 3, characterized in that: The external splines (2) precisely mesh with the internal components of the connected hydraulic pump.

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