Valve hydraulic actuator for fluid conveying

Abstract

The utility model discloses a valve hydraulic actuator for fluid conveying, and relates to the technical field of gear transmission devices. The valve hydraulic actuator for fluid conveying comprises a hydraulic actuator shell. The output assembly is arranged in the hydraulic actuator shell, the output assembly comprises a first output shaft, a first clamping groove, a groove, a second clamping groove, a second output shaft, a connecting piece, a clamping piece, two pushing pieces and two circular ring pieces, the second output shaft rotationally penetrates through the hydraulic actuator shell, the groove is formed between the second output shaft and the first output shaft, the connecting piece rotates in the groove, and the clamping piece rotates in the groove. By arranging a clamping piece in the output assembly, when transportation of adjustment fluid is not carried out, a pushing piece drives the clamping piece to move till the clamping piece does not make contact with a first clamping groove, when a gear rotates due to accidental touch, the gear cannot drive a second output shaft to rotate, and in other words, flowing of the controlled fluid cannot be affected when a hydraulic actuator is damaged; and normal circulation of the valve is not delayed to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the technical field of gear transmission devices, and particularly relates to a hydraulic actuator for a valve used in fluid transportation. Background Art

[0002] A hydraulic actuator is a mechanical device that uses hydraulic transmission as power. Its remarkable feature lies in its powerful driving force, but it is relatively bulky. Therefore, it is mainly applicable to specific occasions that require a large driving force, such as the ship valve in the Three Gorges Project, etc. The Chinese utility model patent, authorization announcement number "CN216590213U", discloses a hydraulic actuator for a valve used in fluid transportation, including a housing. An oil cavity is provided inside the housing. Pistons are connected to both sides inside the oil cavity. A rack is fixedly connected between the two pistons. A rotary actuator is rotatably connected inside the oil cavity. The rotary actuator includes a gear. The teeth of the gear mesh with the teeth of the rack. A first fixed disk is fixedly connected to the bottom of the gear. A second fixed disk is fixedly connected to the bottom of the first fixed disk. An output shaft is fixedly connected to the bottom of the second fixed disk. The bottom of the output shaft penetrates and extends to the bottom of the housing.

[0003] In the above technical solution, when hydraulic oil enters the oil cavity in the housing, the hydraulic oil will push the piston, causing the rack to drive the gear to rotate, and then the output shaft can be rotated, which is convenient for controlling the flow rate of fluid transportation in the valve and improves the use effect. It avoids accidental collision by using nuts, etc. to restrict the movement of the gear. However, when an accidental collision actually occurs, the rack has a tendency to drive the gear to move, and it is very easy for the rack to forcibly drive the gear to rotate, resulting in a change in the flow of the controlled fluid, that is, the fluid cannot operate normally under the premise of its own damage. Summary of the Utility Model

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art, and provide a hydraulic actuator for a valve used in fluid transportation, which can solve the problem that the rack has a tendency to drive the gear to move, and it is very easy for the rack to forcibly drive the gear to rotate, resulting in a change in the flow of the controlled fluid, that is, the fluid cannot operate normally under the premise of its own damage.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: A hydraulic actuator for a valve used in fluid transportation, including a hydraulic actuator housing;

[0006] The output assembly is arranged in the hydraulic actuator housing, and the output assembly includes output shaft 1, slot 1, groove, slot 2, output shaft 2, connecting piece, clamping piece, two pushing pieces and two circular ring pieces. Output shaft 2 rotates and passes through the hydraulic actuator housing. A groove is arranged between output shaft 2 and output shaft 1. The connecting piece rotates in the groove. Slot 2 is provided on output shaft 2, and the two pushing pieces are in contact with the groove on the connecting piece.

[0007] Preferably, the connecting piece is clamped inside the second clamping slot, and the first clamping slot is provided on the first output shaft.

[0008] Preferably, the clamping member slides along the groove on the connecting member, and the surface of the clamping member contacts the surface of the first clamping groove.

[0009] Preferably, the size of the connecting member is larger than the size of the output shaft 1.

[0010] Preferably, the two pushing members both slide through the hydraulic actuator housing, a sliding groove is provided inside the hydraulic actuator housing, and the left pushing member slides along the sliding groove.

[0011] Preferably, the two circular ring members are respectively welded to the corresponding pushing members, and the interior of the hydraulic actuator housing is rotatably connected with a knob shaft.

[0012] Preferably, a gear is sleeved on the surface of the knob shaft, and the other end of the gear is fixed to the output shaft.

[0013] Preferably, an oil tank is provided inside the hydraulic actuator housing, and an oil pipe 1 is installed on the surface of the hydraulic actuator housing, and the oil pipe 1 is connected to the oil tank.

[0014] Preferably, a second oil pipe is installed on the surface of the hydraulic actuator housing, and the second oil pipe is connected to the oil tank.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The hydraulic actuator for the fluid delivery valve has a clamping member in the output assembly. When the transport of the regulated fluid is not being performed, the clamping member is driven by the pusher to move until it is not in contact with the first clamping groove. When an accidental collision occurs and causes the gear to rotate, the gear cannot drive the output shaft 2 to rotate. That is, damage to the hydraulic actuator will not affect the flow of the controlled fluid, and the normal circulation of the valve will not be delayed to the greatest extent.

[0017] (2) For the hydraulic actuator of the valve for fluid transportation, by setting the output component, when a staff member accidentally touches it, the first oil pipe and the second oil pipe drive the gear to move first, and the gear cannot drive the second output shaft to move, that is, it is ensured that the flow rate will not change when there is an accidental touch, avoiding the need to re-adjust the second output shaft when it is found that there is an accidental touch later, and reducing the workload required for operation after accidentally touching the hydraulic actuator. Brief Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the external structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the inside of the hydraulic actuator housing of the present utility model;

[0021] Figure 3 It is a schematic diagram of the connection relationship between the rotary knob shaft and the gear of the present utility model;

[0022] Figure 4 It is a schematic diagram of the position relationship between the connecting piece and the clamping piece of the present utility model;

[0023] Figure 5 For the present utility model Figure 3 The enlarged schematic diagram at position A in it.

[0024] Reference numerals: 1, hydraulic actuator housing; 2, rotary knob shaft; 3, first oil pipe; 4, gear; 5, oil storage; 6, second oil pipe; 7, connecting piece; 8, clamping piece; 9, pushing piece; 10, ring piece; 11, sliding groove; 12, first output shaft; 13, first clamping groove; 14, groove; 15, second clamping groove; 16, second output shaft. Detailed Description of the Specific Embodiment

[0025] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0027] In the description of the present utility model, "greater than", "less than", "exceeding", etc. are understood not to include the number itself, while "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0028] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution: a valve hydraulic actuator for fluid transportation, including a hydraulic actuator housing 1;

[0030] The output assembly is arranged inside the hydraulic actuator housing 1. The output assembly includes a first output shaft 12, a first card slot 13, a groove 14, a second card slot 15, a second output shaft 16, a connecting piece 7, a clamping piece 8, two pushing pieces 9 and two ring pieces 10. The second output shaft 16 rotates through the hydraulic actuator housing 1. There is a groove 14 between the second output shaft 16 and the first output shaft 12. The connecting piece 7 rotates in the groove 14. The second card slot 15 is opened on the second output shaft 16. Both of the two pushing pieces 9 are in contact with the grooves on the connecting piece 7.

[0031] The connecting piece 7 is stuck inside the second card slot 15. The first card slot 13 is opened on the first output shaft 12.

[0032] The clamping piece 8 slides along the groove on the connecting piece 7. The surface of the clamping piece 8 is in contact with the surface of the first card slot 13.

[0033] The size of the connecting piece 7 is larger than the size of the first output shaft 12.

[0034] Both of the two pushing pieces 9 slide through the hydraulic actuator housing 1. There is a sliding groove 11 inside the hydraulic actuator housing 1. The left pushing piece 9 slides along the sliding groove 11.

[0035] The two ring pieces 10 are respectively welded on the corresponding pushing pieces 9. There is a knob shaft 2 rotatably connected inside the hydraulic actuator housing 1.

[0036] A gear 4 is sleeved on the surface of the knob shaft 2. The other end of the gear 4 is fixed together with the first output shaft 12.

[0037] There is an oil storage tank 5 inside the hydraulic actuator housing 1. A first oil pipe 3 is installed on the surface of the hydraulic actuator housing 1. The first oil pipe 3 is communicated with the oil storage tank 5.

[0038] The surface of the housing 1 of the hydraulic actuator is mounted with a second oil pipe 6, and the second oil pipe 6 is communicated with the oil sump 5.

[0039] When it is necessary to adjust the rotation of the second output shaft 16;

[0040] First, start the second oil pipe 6 and the first oil pipe 3 to drive the gear 4, and its movement mode is the same as that of the gear in the Chinese utility model patent "CN216590213U".

[0041] Secondly, the rotation of the gear 4 drives the first output shaft 12 to move, the movement of the first output shaft 12 drives the first card slot 13 to move, the movement of the first card slot 13 drives the card member 8 to move, the movement of the card member 8 drives the connecting member 7 to move, the movement of the connecting member 7 drives the second card slot 15 to move, and the movement of the second card slot 15 drives the second output shaft 16 to rotate to an appropriate angle.

[0042] After the adjustment is completed;

[0043] Push the ring member 10 to drive the pushing member 9 to move, the movement of the pushing member 9 drives the card member 8 to move. Since the size of the connecting member 7 is larger than that of the first output shaft 12, the pushing member 9 drives the card member 8 to move to a position not inside the first card slot 13 but in the groove on the connecting member 7. Then, drive the pushing member 9 not to contact the first card slot 13.

[0044] When there is a mis-touch to start the first oil pipe 3 and the second oil pipe 6, the rotation of the gear 4 drives the first output shaft 12 to rotate, the rotation of the first output shaft 12 drives the first card slot 13 to rotate, and the rotation of the first card slot 13 cannot drive the connecting member 7 to rotate, that is, it cannot drive the second output shaft 16 to rotate.

[0045] By setting the card member 8 in the output assembly, when the transportation of the fluid is not adjusted, the pushing member 9 drives the card member 8 to move to not contact the first card slot 13. When a mis-touch causes the gear 4 to rotate, the gear 4 cannot drive the second output shaft 16 to rotate, that is, the damage of the hydraulic actuator will not affect the flow of the controlled fluid, and the normal flow of the valve will not be delayed to the greatest extent.

[0046] By setting the output assembly, when the staff mis-touches, the first oil pipe 3 and the second oil pipe 6 first drive the gear 4 to move, and the gear 4 cannot drive the second output shaft 16 to move, that is, it is ensured that the flow rate will not change when there is a mis-touch, avoiding the need to re-adjust the second output shaft 16 when the mis-touch is found later, and reducing the workload required after mis-touching the hydraulic actuator.

[0047] Working principle:

[0048] When it is necessary to adjust the rotation of the second output shaft 16;

[0049] First, start the second oil pipe 6 and the first oil pipe 3 to drive the gear 4.

[0050] Secondly, the rotation of the gear 4 drives the first output shaft 12 to move. The movement of the first output shaft 12 drives the first card slot 13 to move. The movement of the first card slot 13 drives the card member 8 to move. The movement of the card member 8 drives the connecting member 7 to move. The movement of the connecting member 7 drives the second card slot 15 to move. The movement of the second card slot 15 drives the second output shaft 16 to rotate.

[0051] After the adjustment is completed;

[0052] Push the ring member 10 to drive the pushing member 9 to move. The movement of the pushing member 9 drives the card member 8 to move. Since the size of the connecting member 7 is larger than that of the first output shaft 12, the pushing member 9 drives the card member 8 to move.

[0053] When there is a mis-touch to start the first oil pipe 3 and the second oil pipe 6, the rotation of the gear 4 drives the first output shaft 12 to rotate. The rotation of the first output shaft 12 drives the first card slot 13 to rotate.

[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A hydraulic actuator for a valve used for fluid delivery, characterized in that: include: Hydraulic actuator housing (1); The output assembly is arranged in a hydraulic actuator housing (1), and comprises an output shaft 1 (12), a clamping groove 1 (13), a groove (14), a clamping groove 2 (15), an output shaft 2 (16), a connecting piece (7), a clamping piece (8), two pushers (9) and two annular pieces (10). The output shaft 2 (16) rotates and passes through the hydraulic actuator housing (1). A groove (14) is arranged between the output shaft 2 (16) and the output shaft 1 (12). The connecting piece (7) rotates in the groove (14). The clamping groove 2 (15) is arranged on the output shaft 2 (16), and the two pushers (9) are in contact with the groove on the connecting piece (7).

2. A fluid delivery valve hydraulic actuator according to claim 1, characterized in that: The connecting member (7) is clamped in the interior of the second clamping groove (15), and the first clamping groove (13) is provided on the output shaft (12).

3. A fluid delivery valve hydraulic actuator according to claim 1, characterized in that: The clamping member (8) slides along the groove on the connecting member (7), and the surface of the clamping member (8) contacts the surface of the clamping groove 1 (13).

4. A fluid delivery valve hydraulic actuator according to claim 1, characterized in that: The size of the connecting member (7) is larger than the size of the output shaft 1 (12).

5. A fluid delivery valve hydraulic actuator according to claim 1, characterized in that: The two pushing members (9) both slide through the hydraulic actuator housing (1), a sliding groove (11) is provided inside the hydraulic actuator housing (1), and the left pushing member (9) slides along the sliding groove (11).

6. A fluid delivery valve hydraulic actuator according to claim 1, characterized in that: The two circular ring members (10) are respectively welded to the corresponding push members (9), and the interior of the hydraulic actuator housing (1) is rotatably connected to a knob shaft (2).

7. A fluid delivery valve hydraulic actuator according to claim 6, characterized in that: A gear (4) is sleeved on the surface of the knob shaft (2), and the other end of the gear (4) is fixed to an output shaft (12).

8. A fluid delivery valve hydraulic actuator according to claim 1, characterized in that: The hydraulic actuator housing (1) has an oil tank (5) inside, and an oil pipe (3) is installed on the surface of the hydraulic actuator housing (1), and the oil pipe (3) is connected to the oil tank (5).

9. A fluid delivery valve hydraulic actuator according to claim 8, characterized in that: A second oil pipe (6) is installed on the surface of the hydraulic actuator housing (1), and the second oil pipe (6) is connected to the oil tank (5).

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