External combined hydraulic cylinder capable of fast advancing and retreating

Abstract

The other end of a main cylinder body is connected with one end of a prefill valve mounting seat in a sealed mode, a cover body is provided with a through hole, the through hole is communicated with the interior of the prefill valve mounting seat, a main cylinder plunger is arranged in the main cylinder body, and a main cylinder guide sleeve for sealing is arranged between the outer surface of the other end of the main cylinder plunger and the inner surface of an opening. The other end of the prefill valve mounting seat is hermetically connected with one end of a quick cylinder body through a quick cylinder guide sleeve, one side of the prefill valve mounting seat is hermetically connected with a prefill valve, a channel is arranged in the prefill valve mounting seat and communicated with the main cylinder body and the quick cylinder body, and one end of a quick cylinder plunger is arranged in the quick cylinder body. The hydraulic system has the advantages that the working efficiency is improved, the external rapid cylinder and the main cylinder are designed to be integrally combined, no-load stroke rapid feeding and low-speed working of the main cylinder during load are achieved, the working efficiency is improved, the cost for configuring the large-flow hydraulic system is saved, the hydraulic system can be simplified, and faults are reduced.

Description

Technical Field

[0001] This utility model patent relates to a combined hydraulic cylinder with an externally mounted fast forward and backward mechanism. Background Technology

[0002] In ordinary hydraulic cylinders, the inlet and outlet oil flow rates and the forward and retract speeds remain unchanged, resulting in low work efficiency. Utility Model Content

[0003] The purpose of this utility model is to solve the existing technical problems by proposing a combined hydraulic cylinder with an externally mounted fast forward and backward mechanism.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a combined hydraulic cylinder with externally mounted rapid advance and retreat, comprising a main cylinder body and a rapid cylinder body. One end of the main cylinder body has an opening, and the other end has a cover. The other end of the main cylinder body is sealed and connected to one end of a filling valve mounting seat. The cover has a through hole communicating with the interior of the filling valve mounting seat. A main cylinder plunger is located within the main cylinder body. A sealing main cylinder guide sleeve is provided between the outer surface of the other end of the main cylinder plunger and the inner surface of the opening. The other end of the filling valve mounting seat is sealed and connected to one end of the rapid cylinder body via the rapid cylinder guide sleeve. A filling valve is sealed and connected to one side of the filling valve mounting seat. A channel is provided within the filling valve mounting seat, connecting the main cylinder body and the rapid cylinder body. One end of a rapid cylinder plunger is located within the rapid cylinder body. The other end of the rapid cylinder plunger slides and seals through the rapid cylinder guide sleeve, moving within the filling valve mounting seat and the main cylinder body under driving force.

[0005] Furthermore, the outer diameter of one end of the quick-acting cylinder plunger is smaller than the inner diameter of the through hole and the inner diameter of the channel of the filling valve mounting seat.

[0006] Furthermore, the inner side of the main cylinder body is a first cylindrical inner cavity, which is connected to an opening. One end of the main cylinder plunger is provided with a first convex surface, which fits against the wall of the first cylindrical inner cavity. Several grooves are provided on the first convex surface, and sealing rings are provided in the grooves. The first convex surface and the wall of the first cylindrical inner cavity maintain a sliding seal.

[0007] Furthermore, the outer side of the master cylinder guide sleeve is engaged and sealed to the inner wall of the opening, and several sealing rings are provided on the inner side wall of the master cylinder guide sleeve to maintain a sliding seal with the other end of the master cylinder plunger.

[0008] Furthermore, the rapid cylinder body is provided with a second cylindrical inner cavity, and one end of the rapid cylinder plunger is provided with a second convex surface. Several grooves are provided on the second convex surface, and sealing rings are provided in the grooves. The second convex surface and the wall of the second cylindrical inner cavity maintain a sliding seal.

[0009] Furthermore, a second through hole is provided on the other end face of the rapid cylinder body, and the inner diameter of the second cylindrical inner cavity of the rapid cylinder body is smaller than the inner diameter of the first cylindrical inner cavity of the main cylinder body.

[0010] Furthermore, the filling valve mounting seat can be detachably fixed to one end of the quick-release cylinder.

[0011] Furthermore, a master cylinder guide sleeve pressure ring is provided on the outer side of the opening to fix the master cylinder guide sleeve.

[0012] The beneficial effects of this utility model are: improving work efficiency, the design of an external fast cylinder integrated with the main cylinder enables rapid feeding during no-load stroke, and slow operation of the main cylinder under load, which not only improves work efficiency, but also saves the cost of configuring a large-flow hydraulic system, and simplifies the hydraulic system to reduce failures. Attached Figure Description

[0013] Figure 1 For structural illustration Figure 1 .

[0014] Figure 2 For structural illustration Figure 2 .

[0015] Figure 3 cross section Figure 1 .

[0016] Figure 4 cross section Figure 2 .

[0017] Figure 5 Main view. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1 combined with appendix Figure 1-5 A combined hydraulic cylinder with externally mounted rapid advance and retreat includes a main cylinder body 1 and a rapid cylinder body 2. One end of the main cylinder body has an opening, and the other end of the main cylinder body has a cover. The other end of the main cylinder body is sealed and connected to one end of a filling valve mounting seat 4. The cover has a through hole 3, which communicates with the interior of the filling valve mounting seat. The main cylinder body contains a main cylinder plunger 5. A main cylinder guide sleeve 6 for sealing is provided between the outer surface of the other end of the main cylinder plunger and the inner surface of the opening. The other end of the filling valve mounting seat is sealed and connected to one end of the rapid cylinder body 2 through a rapid cylinder guide sleeve 10. One side of the filling valve mounting seat is sealed and connected to a filling valve 7. The filling valve mounting seat has a channel 8, which connects the main cylinder body and the rapid cylinder. The rapid cylinder body contains one end of a rapid cylinder plunger 9. The other end of the rapid cylinder plunger slides and seals through the rapid cylinder guide sleeve and moves in the filling valve mounting seat and the main cylinder body by driving force. The outer diameter of one end of the rapid cylinder plunger is smaller than the inner diameter of the through hole and the inner diameter of the channel of the filling valve mounting seat.

[0020] A combined hydraulic cylinder with externally mounted rapid forward and backward movement, wherein the inner side of the main cylinder body is a first cylindrical inner cavity 11, the inner cavity of the first cylindrical inner cavity is connected to an opening, one end of the main cylinder plunger is provided with a first external convex surface 51, the first external convex surface is in contact with the wall of the first cylindrical inner cavity, the first external convex surface is provided with several grooves, and a sealing ring is provided in the grooves, the first external convex surface and the wall of the first cylindrical inner cavity maintain a sliding seal.

[0021] A combined hydraulic cylinder with externally mounted rapid forward and backward movement, wherein the main cylinder body has a third through hole located near the opening side.

[0022] A combined hydraulic cylinder with an externally mounted, rapidly advancing and retracting mechanism, wherein the side of the filling valve mounting base is provided with several connection holes for connection channels.

[0023] A combined hydraulic cylinder with external rapid forward and backward movement, wherein the outer side of the main cylinder guide sleeve is engaged and sealed with the inner wall of the opening, and several sealing rings are provided on the inner side wall of the main cylinder guide sleeve to maintain a sliding seal with the other end of the main cylinder plunger.

[0024] A combined hydraulic cylinder with externally mounted rapid forward and backward movement has a second cylindrical inner cavity 21 inside the rapid cylinder body. One end of the rapid cylinder plunger has a second external convex surface 91. The second external convex surface has several grooves, and a sealing ring is provided in the grooves. The second external convex surface and the wall of the second cylindrical inner cavity maintain a sliding seal.

[0025] A combined hydraulic cylinder with externally mounted rapid forward and backward movement, wherein a second through hole 22 is provided on the other end face of the rapid cylinder body, and the inner diameter of the second cylindrical inner cavity of the rapid cylinder body is smaller than the inner diameter of the first cylindrical inner cavity of the main cylinder body.

[0026] A combined hydraulic cylinder with an externally mounted fast forward and backward mechanism, wherein the filling valve mounting seat is detachably fixed to one end of the fast cylinder body.

[0027] A combined hydraulic cylinder with externally mounted rapid forward and backward movement, wherein a main cylinder guide sleeve pressure ring 12 is provided on the outer side of the opening to fix the main cylinder guide sleeve.

[0028] A combined hydraulic cylinder with an externally mounted fast forward and backward mechanism improves work efficiency. The external fast cylinder is designed to be integrated with the main cylinder, enabling rapid feed during no-load strokes and slow operation of the main cylinder under load. This not only improves work efficiency but also saves on the cost of configuring a high-flow hydraulic system and simplifies the hydraulic system to reduce malfunctions.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A combined hydraulic cylinder with externally mounted rapid forward and backward movement, comprising a main cylinder body and a rapid-moving cylinder body, wherein one end of the main cylinder body has an opening and the other end of the main cylinder body has a cover, characterized in that: The other end of the main cylinder body is sealed and connected to one end of the filling valve mounting seat. The cover body has a through hole that communicates with the inside of the filling valve mounting seat. The main cylinder body contains a main cylinder plunger. A main cylinder guide sleeve for sealing is provided between the outer surface of the other end of the main cylinder plunger and the inner surface of the opening. The other end of the filling valve mounting seat is sealed and connected to one end of the quick cylinder body through the quick cylinder guide sleeve. One side of the filling valve mounting seat is sealed and connected to the filling valve. The filling valve mounting seat has a channel that connects the main cylinder body and the quick cylinder. One end of the quick cylinder plunger is provided in the quick cylinder body. The other end of the quick cylinder plunger slides and seals through the quick cylinder guide sleeve and moves in the filling valve mounting seat and the main cylinder body by driving force.

2. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 1, characterized in that: The outer diameter of one end of the quick-acting cylinder plunger is smaller than the inner diameter of the through hole and the inner diameter of the channel of the filling valve mounting seat.

3. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 2, characterized in that: The inner side of the main cylinder body is a first cylindrical inner cavity, which is connected to an opening. One end of the main cylinder plunger is provided with a first convex surface, which fits against the wall of the first cylindrical inner cavity. Several grooves are provided on the first convex surface, and sealing rings are provided in the grooves. The first convex surface and the wall of the first cylindrical inner cavity maintain a sliding seal.

4. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 3, characterized in that: The outer side of the master cylinder guide sleeve is engaged and sealed to the inner wall of the opening. Several sealing rings are provided on the inner side wall of the master cylinder guide sleeve, which maintain a sliding seal with the other end of the master cylinder plunger.

5. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 4, characterized in that: The rapid cylinder body has a second cylindrical inner cavity, and one end of the rapid cylinder plunger has a second convex surface. The second convex surface has several grooves, and a sealing ring is provided in the grooves. The second convex surface and the wall of the second cylindrical inner cavity maintain a sliding seal.

6. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 5, characterized in that: A second through hole is provided on the other end face of the rapid cylinder body, and the inner diameter of the second cylindrical inner cavity of the rapid cylinder body is smaller than the inner diameter of the first cylindrical inner cavity of the main cylinder body.

7. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 6, characterized in that: The filling valve mounting seat can be detachably fixed to one end of the quick-release cylinder.

8. A combined hydraulic cylinder with externally mounted rapid forward and backward movement according to claim 7, characterized in that: The outer side of the opening is equipped with a master cylinder guide sleeve pressure ring for fixing the master cylinder guide sleeve.

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