Shifting fork for hydraulic plunger pump

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By designing the structure of the moving barrel and connecting seat in the hydraulic plunger pump fork, the problem of insufficient strength in the contact position of the fork is solved, stable connection and simple repair of the fork are achieved, and the service life of the equipment is extended.

CN222276909UActive Publication Date: 2024-12-31WUXI LINGCHANG MASCH MFG CO LTD

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Patent Information

Application Number: CN202421016509.0
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-10
Publication Date: 2024-12-31
Estimated Expiration: 2034-05-10

AI Technical Summary

Technical Problem

The existing hydraulic plunger pumps have insufficient strength at the contact position between the pull-out fork and the feedback pin, which is prone to material cracking, and there is a lack of replacement conditions after the pull-out fork cracking, which affects the service life and maintenance difficulty.

Method used

A fork structure including a fork pulling body, a moving barrel, a ball head post and a connecting seat is designed. The fork stability is increased and the fork is broken by close contact and screw fixation between the moving barrel and the fork pulling body. Afterwards, simple repair and reconnection are achieved through the design of the projecting ring and the annular groove.

Benefits of technology

It improves the connection stability between the pull-out fork and the connecting seat, facilitates the repair and reuse of the pull-out fork, avoids the necessity of replacing the pull-out fork, and extends the service life of the equipment.

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Abstract

The shifting fork for the hydraulic plunger pump comprises a shifting fork body, a moving cylinder, a ball head column and a connecting base, the moving cylinder is arranged on the shifting fork body, the moving cylinder is in close contact with the surface of the shifting fork body and can move up and down on the shifting fork body, second grooves are formed in the left side and the right side of the moving cylinder, and the ball head column is arranged in the second grooves. Wherein the second grooves are circular grooves, second fixing screws are arranged in the second grooves, the second fixing screws are in threaded connection with the moving cylinder, the second fixing screws penetrate through the moving cylinder, in addition, the moving cylinder can be fixed to the shifting fork body through the second fixing screws, a center hole is formed in the center of the moving cylinder, and the shifting fork body is arranged in the center hole. Wherein the shifting fork body penetrates through the center hole, the lower end of the moving cylinder is fixedly connected with a second protruding ring, the lower end of the second protruding ring is fixedly connected with a first protruding ring, a connecting base is arranged below the shifting fork body, an inserting groove is formed in the upper end of the connecting base, the lower end of the shifting fork body is inserted into the inserting groove, and a first annular groove is formed above the inserting groove.

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Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic devices, in particular to a shift fork for a hydraulic plunger pump. Background Art

[0002] The hydraulic piston pump or solid pump is driven by a hydraulic power pack. The hydraulic cylinder pushes the delivery cylinder to deliver the material in the delivery cylinder to the pipeline. It is generally divided into single plunger and double plunger. Typical representatives include 4 types of solid pumps from Putzmeister in Germany, namely: EKO single plunger pump, KOS, KOV, HSP three double plunger pumps. This pump is a positive displacement pump, especially suitable for long-distance pipeline transportation of high solid content and viscous materials. Its advantages are very stable and reliable operation, but it is noisy. The delivery pressure can be as high as 130Bar and the displacement can reach 0.5-500 cubic meters / hour. It is widely used in sewage treatment, solid waste treatment, mining and metallurgy, silt removal, dredging, petrochemical industry, power plants, cement industry and other fields.

[0003] Patent document with publication number CN215170677U discloses a shift for a hydraulic plunger pump, comprising a ball head, a shift fork body, a pin hole and a force-bearing section; the shift fork body is provided with a pin hole; one end of the shift fork body is provided with a ball head, and the other end is provided with a force-bearing section; the outer periphery of the force-bearing section is provided on the outer periphery of a virtual cylinder, and the diameter of the force-bearing section is larger than the outer diameter of the shift fork body. The utility model increases the strength of the contact position between the shift fork cross opening groove and the feedback pin by increasing the outer diameter of the cross opening groove, thereby avoiding the material cracking due to insufficient strength of the shift fork at the contact position, thereby extending the service life of the plunger pump.

[0004] The prior art can reduce the phenomenon of fork cracking by increasing the outer diameter of the cross opening groove, but the contact position between the fork and the feedback pin is still likely to crack, and the fork may not be replaced after cracking, such as there is no suitable replacement fork. Therefore, those skilled in the art provide a fork for a hydraulic piston pump to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the utility model is to provide a shift fork for a hydraulic plunger pump to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A shift fork for a hydraulic plunger pump comprises a shift fork body, a moving cylinder, a ball stud and a connecting seat, wherein the shift fork body is provided with a moving cylinder, wherein the moving cylinder is in close contact with the surface of the shift fork body, and the moving cylinder can move up and down on the shift fork body, second grooves are provided on both sides of the moving cylinder, wherein the second grooves are circular grooves, second fixing screws are provided in the second grooves, wherein the second fixing screws are threadedly connected to the moving cylinder, and the second fixing screws pass through the moving cylinder, and in addition, the second fixing screws can fix the moving cylinder to the shift fork body, a center hole is provided in the center of the moving cylinder, wherein the shift fork body passes through the center hole, a second protruding ring is fixedly connected to the lower end of the moving cylinder, and a first protruding ring is fixedly connected to the lower end of the second protruding ring, and a connecting seat is provided below the shift fork body.

[0008] As a further solution of the utility model: a slot is provided at the upper end of the connecting seat, wherein the lower end of the fork body is inserted into the slot, a first annular groove is provided above the slot, wherein the first annular groove is provided on the connecting seat, and the first protruding ring is clamped in the first annular groove.

[0009] As a further solution of the utility model: a second annular groove is arranged above the first annular groove, wherein the second annular groove is arranged on the connecting seat, and the second protruding ring is clamped in the second annular groove, and first grooves are arranged on both sides of the connecting seat, wherein the first groove is a circular groove.

[0010] As a further solution of the utility model: the first grooves are each provided with a first fixing screw, wherein the first fixing screw is threadedly connected to the connecting seat, and the first fixing screw passes through the connecting seat, the first fixing screw is located between the first annular groove and the second annular groove, and in addition, the first fixing screw can fix the first protruding ring or the lower end of the fork body to the connecting seat.

[0011] As a further solution of the utility model: a fixing pin hole is provided on one side of the upper end of the fork body, a fixing groove is provided on the upper surface of the fork body, a ball head column is provided above the fork body, wherein the lower end of the ball head column is inserted into the fixing groove for fixation, a top ball head is provided on the upper end of the ball head column, and a feedback pin hole is provided on one side of the lower end of the connecting seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. First, the lower end of the fork body can be inserted into the slot for preliminary connection and fixation, and then the fork body can be further fixed to the connecting seat by the first fixing screw, so that the connection between the fork body and the connecting seat is more stable.

[0014] 2. After the connection between the fork body and the connecting seat is broken, the broken lower end of the fork body can be taken out of the slot, and the moving cylinder is moved toward the connecting seat, wherein the first protruding ring is inserted into the first annular groove, and the second protruding ring is inserted into the second annular groove, so that the moving cylinder is preliminarily connected to the connecting seat, and then the first protruding ring is fixed to the connecting seat by the first fixing screw, so that the moving cylinder is further fixed to the connecting seat, and finally the moving cylinder is fixed to the fork body by the second fixing screw. At this time, the fork body will be connected to the connecting seat again, so that the fork body is simple and convenient to repair, and it is convenient for the user to continue to use it when there is no condition for replacing the fork body after it is broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a structural schematic diagram of a shift fork for a hydraulic plunger pump.

[0016] Figure 2 The present invention is a structural schematic diagram of a fixed pin hole and a fork body in a fork for a hydraulic plunger pump.

[0017] Figure 3 The present invention is a structural schematic diagram of a first fixing screw and a feedback pin hole in a shift fork for a hydraulic plunger pump.

[0018] Figure 4 The present invention is a structural schematic diagram of a second fixing screw and a first protruding ring in a shift fork for a hydraulic plunger pump.

[0019] In the figure: 1-fork body, 2-moving cylinder, 3-connecting seat, 4-fixing pin hole, 5-ball head column, 6-top ball head, 7-first groove, 8-first fixing screw, 9-feedback pin hole, 10-slot, 11-first annular groove, 12-second annular groove, 13-fixing groove, 14-second groove, 15-second fixing screw, 16-second protruding ring, 17-first protruding ring, 18-center hole. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with the specific implementation methods. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the 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 of the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] See also Figures 1 to 4In the embodiment of the utility model, a hydraulic piston pump fork includes a fork body 1, a moving cylinder 2, a ball stud 5 and a connecting seat 3, wherein the fork body 1 is provided with a moving cylinder 2, wherein the moving cylinder 2 is in close contact with the surface of the fork body 1, and the moving cylinder 2 can move up and down on the fork body 1, and the moving cylinder 2 is provided with a second groove 14 on both sides of the left and right sides, wherein the second groove 14 is a circular groove, and a second fixing screw 15 is provided in each of the second grooves 14, wherein the second fixing screw 15 is threadedly connected to the moving cylinder 2, and The second fixing screw 15 passes through the moving cylinder 2. In addition, the second fixing screw 15 can fix the moving cylinder 2 on the fork body 1. A center hole 18 is set in the center of the moving cylinder 2, wherein the fork body 1 passes through the center hole 18, the lower end of the moving cylinder 2 is fixedly connected with a second protruding ring 16, and the lower end of the second protruding ring 16 is fixedly connected with a first protruding ring 17. A connecting seat 3 is set below the fork body 1, and a slot 10 is set at the upper end of the connecting seat 3, wherein the lower end of the fork body 1 is inserted into the slot 10, and a first annular groove 11 is set above the slot 10. , wherein the first annular groove 11 is arranged on the connecting seat 3, and the first protruding ring 17 is clamped in the first annular groove 11, a second annular groove 12 is arranged above the first annular groove 11, wherein the second annular groove 12 is arranged on the connecting seat 3, and the second protruding ring 16 is clamped in the second annular groove 12, the connecting seat 3 is provided with first grooves 7 on both sides, wherein the first grooves 7 are circular grooves, and the first grooves 7 are provided with first fixing screws 8, wherein the first fixing screws 8 are threadedly connected to the connecting seat 3, and the first fixing screws 8 It runs through the connecting seat 3, and the first fixing screw 8 is located between the first annular groove 11 and the second annular groove 12. In addition, the first fixing screw 8 can fix the first protruding ring 17 or the lower end of the fork body 1 on the connecting seat 3. A fixing pin hole 4 is provided on one side of the upper end of the fork body 1, and a fixing groove 13 is provided on the upper surface of the fork body 1. A ball head column 5 is provided above the fork body 1, wherein the lower end of the ball head column 5 is inserted into the fixing groove 13 for fixing, and a top ball head 6 is provided on the upper end of the ball head column 5. A feedback pin hole 9 is provided on one side of the lower end of the connecting seat 3.

[0022] The working principle of the utility model is as follows: first, the lower end of the fork body 1 can be inserted into the slot 10 for preliminary connection and fixation, and then the fork body 1 is further fixed to the connecting seat 3 by the first fixing screw 8. Then, after the connection between the fork body 1 and the connecting seat 3 is broken, the broken lower end of the fork body 1 can be taken out from the slot 10, and the moving cylinder 2 is moved toward the connecting seat 3, wherein the first protruding ring 17 will be inserted into the first annular groove 11, and the second protruding ring 16 will be inserted into the second annular groove 12, thereby making the moving cylinder 2 and the connecting seat 3 preliminarily connected. Then, the first protruding ring 17 is fixed to the connecting seat 3 by the first fixing screw 8, thereby making the moving cylinder 2 further fixed to the connecting seat 3, and finally, the moving cylinder 2 is fixed to the fork body 1 by the second fixing screw 15. At this time, the fork body 1 will be connected to the connecting seat 3 again, so that the fork body 1 is simple and convenient to repair, and it is convenient for the user to continue to use it when there is no condition for replacing the fork body 1 after it is broken.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fork for a hydraulic piston pump, comprising a fork body (1), a moving cylinder (2), a ball stud (5) and a connecting seat (3), characterized in that: The fork body (1) is provided with a moving cylinder (2), wherein the moving cylinder (2) is in close contact with the surface of the fork body (1), and second grooves (14) are provided on both sides of the moving cylinder (2), wherein the second grooves (14) are circular grooves, and second fixing screws (15) are provided in the second grooves (14). The lower end of the moving cylinder (2) is fixedly connected with a second protruding ring (16), and the lower end of the second protruding ring (16) is fixedly connected with a first protruding ring (17). A connecting seat (3) is provided below the fork body (1), and the upper end of the connecting seat (3) is A slot (10) is provided, wherein the lower end of the fork body (1) is inserted into the slot (10), a first annular groove (11) is provided above the slot (10), a second annular groove (12) is provided above the first annular groove (11), wherein the second annular groove (12) is provided on the connecting seat (3), and a second protruding ring (16) is clamped in the second annular groove (12), and first grooves (7) are provided on both left and right sides of the connecting seat (3), wherein the first grooves (7) are circular grooves, and the first grooves (7) are provided with first fixing screws (8).

2. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: The moving cylinder (2) is provided with a central hole (18) at its center, wherein the shift fork body (1) passes through the central hole (18).

3. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: The first annular groove (11) is arranged on the connecting seat (3), and the first protruding ring (17) is clamped in the first annular groove (11).

4. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: The second fixing screw (15) is threadedly connected to the moving cylinder (2), and the second fixing screw (15) passes through the moving cylinder (2).

5. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: The first fixing screw (8) is threadedly connected to the connecting seat (3), and the first fixing screw (8) passes through the connecting seat (3). The first fixing screw (8) is located between the first annular groove (11) and the second annular groove (12).

6. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: A fixing pin hole (4) is provided on one side of the upper end of the fork body (1).

7. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: The upper surface of the fork body (1) is provided with a fixing groove (13).

8. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: A ball stud (5) is arranged above the fork body (1), wherein the lower end of the ball stud (5) is inserted into the fixing groove (13).

9. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: A top ball head (6) is arranged at the upper end of the ball head column (5).

10. A shift fork for a hydraulic piston pump according to claim 1, characterized in that: A feedback pin hole (9) is provided on one side of the lower end of the connection seat (3).