Boosting oil cylinder

Abstract

The boosting oil cylinder comprises a cylinder bottom, a cylinder barrel, a guide sleeve, a piston rod, a rodless cavity oil port and a rod cavity oil port which are connected, the front end of the piston rod penetrates through the guide sleeve in a sliding mode, the piston rod is provided with a piston and an inner hole, and the front end of the piston rod is fixedly connected with a sealing plate; the front section of a power-assisted rod is arranged in the inner hole, the front end of the power-assisted rod is fixedly connected with an inner piston matched with the inner hole, and the rear end of the inner hole of the piston rod is fixedly connected with an inner guide sleeve matched with the power-assisted rod; a radial oil passing hole communicated with the inner circle and the outer circle of the piston rod is formed in the piston and the piston rod in front of the inner guide sleeve, the rear end of the power-assisted rod is fixedly connected with the cylinder bottom, a blind hole is formed in the front section of the power-assisted rod, and a radial hole communicated with an inner cavity of the cylinder barrel behind the piston and the blind hole is formed in the power-assisted rod; according to the utility model, the thrust can quickly reach a rated value, the timely boosting effect is realized, and the requirements of working conditions are met.

Description

Technical Field

[0001] The utility model relates to a booster oil cylinder. Background Art

[0002] Existing booster cylinders such as Figure 1 As shown, it includes a connected cylinder bottom 21, a cylinder barrel 22, a guide sleeve 23, a piston rod 24, a rodless chamber oil port 25 and a rod chamber oil port 26. The piston rod 24 is provided with a piston 27 and an inner hole 28. The front end of the piston rod 24 is fixedly connected with a sealing plate 29. The inner hole of the piston rod 24 is fixedly provided with an inner guide sleeve 30. A booster rod 31 slides through the inner guide sleeve 30. The front end of the booster rod 31 is fixedly connected with an inner piston 32. The booster rod 31 and the inner piston 32 are provided with a connected center hole 33. The rear end of the booster rod 31 is provided with a radial oil groove 34. When in use, as shown in FIG. Figure 2 As shown, oil enters the rodless chamber oil port 25, pushing the piston rod 24 to extend outward, and at the same time, hydraulic oil enters the piston rod inner cavity in front of the inner piston 32 to increase the thrust and achieve the power-assisting effect. However, in this process, the inner piston 32 and the power-assisting rod 31 need to be recovered until the rear end of the power-assisting rod 31 contacts the cylinder bottom 21, and the thrust in the inner cavity of the piston rod 24 fully reaches the rated value. The power-assisting effect is delayed, which is difficult to meet the needs of working conditions. Summary of the invention

[0003] The purpose of the utility model is to provide a booster oil cylinder in view of the above-mentioned deficiencies in the prior art, whose thrust can quickly reach the rated value, achieve timely boosting effect, and meet the needs of working conditions.

[0004] To achieve the above-mentioned purpose, the utility model provides a power-assisted oil cylinder, comprising a connected cylinder bottom, a cylinder barrel, a guide sleeve, a piston rod, a rodless chamber oil port and a rod chamber oil port, the front end of the piston rod slides through the guide sleeve, the piston rod is provided with a piston and an inner hole, and the front end of the piston rod is fixedly connected with a sealing plate; it is characterized in that a front section of a power-assisted rod is placed in the inner hole, the front end of the power-assisted rod is fixedly connected with an inner piston matching with the inner hole, and the rear end of the inner hole of the piston rod is fixedly connected with an inner guide sleeve matching with the power-assisted rod; a radial oil hole connecting the inner and outer circles of the piston rod is provided in the piston rod in front of the piston and the inner guide sleeve, the rear end of the power-assisted rod is fixedly connected to the cylinder bottom, a blind hole is provided in the front section of the power-assisted rod, and a radial hole connecting the cylinder barrel cavity behind the piston and its blind hole is provided in the power-assisted rod.

[0005] When in use, oil enters the rodless cavity oil port to push the piston rod outward, and at the same time, the hydraulic oil enters the piston rod cavity through the radial hole and the blind hole. Since the booster rod is firmly connected to the cylinder bottom and does not move axially, the thrust in the piston rod cavity can quickly reach the rated value, which can achieve timely boosting effect and meet the needs of working conditions;

[0006] As a further improvement of the utility model, sealing components are provided on the outer circle of the inner piston and the inner circle of the inner guide sleeve; the sealing effect in the piston rod can be improved to ensure that the thrust reaches the rated value;

[0007] As a further improvement of the utility model, the rear end of the booster rod is connected to the wire ring through a thread and a plurality of set screws, and the wire ring is fixedly connected to the cylinder bottom through an external thread; this facilitates the fixed connection between the booster rod and the cylinder bottom;

[0008] In summary, the thrust of the utility model can quickly reach the rated value, achieve timely power-assisting effect, and meet the needs of working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Front view of the existing power cylinder.

[0010] Figure 2 for Figure 1 Front view when extended.

[0011] Figure 3 It is the front view of the embodiment of the utility model.

[0012] Figure 4 for Figure 3 Front view when extended DETAILED DESCRIPTION

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0014] like Figure 3 As shown, a booster oil cylinder of this embodiment includes a connected cylinder bottom 1, a cylinder barrel 2, a guide sleeve 3, a piston rod 4, a rodless chamber oil port 5 and a rod chamber oil port 6. The front end of the piston rod 4 slides through the guide sleeve 3. The piston rod 4 is provided with a piston 7 and an inner hole 8. The front end of the piston rod 4 is welded and fixedly connected with a sealing plate 9; the front section of a booster rod 10 is placed in the inner hole 8, the front end of the booster rod 10 is fixedly connected with an inner piston 11 that matches the inner hole 8, and the inner guide that matches the booster rod 10 is fixedly connected with a thread at the rear end of the inner hole 8 of the piston rod 4. A sleeve 12 is provided, a sealing assembly 13 is provided on the outer circle of the inner piston 11, and a sealing assembly 14 is provided on the inner circle of the inner guide sleeve 12; a radial oil hole 15 is provided in the piston rod 4 in front of the piston 7 and the inner guide sleeve 12, which communicates with the inner and outer circles thereof; the rear end of the booster rod 10 is connected to the wire ring 17 through a thread and several set screws 16, and the wire ring 17 is fixedly connected to the cylinder bottom 1 through an external thread; a blind hole 18 is provided in the front section of the booster rod 10, and a radial hole 19 is provided in the booster rod 10, which communicates with the inner cavity of the cylinder behind the piston and its blind hole 18.

[0015] When using, Figure 4As shown, oil enters the rodless cavity oil port 5, pushing the piston rod 4 to extend outward, and at the same time, the hydraulic oil enters the inner cavity of the piston rod 4 through the radial hole 19 and the blind hole 18. Since the booster rod 10 is fixedly connected to the cylinder bottom 1 and does not move axially, the thrust in the inner cavity of the piston rod 4 plus the thrust in the cylinder barrel can quickly reach the rated value, which can achieve a timely boosting effect and meet the needs of the working conditions; the radial oil hole 15 can ensure the timely recovery of the piston rod 4;

[0016] The sealing assembly 13 and the sealing assembly 14 can improve the sealing effect in the piston rod 4 and ensure that the thrust reaches the rated value.

Claims

1. A booster oil cylinder, comprising a connected cylinder bottom, a cylinder barrel, a guide sleeve, a piston rod, a rodless chamber oil port and a rod chamber oil port, the front end of the piston rod slides through the guide sleeve, the piston rod is provided with a piston and an inner hole, and the front end of the piston rod is fixedly connected with a sealing plate; characterized in that The front section of a booster rod is placed in the inner hole, the front end of the booster rod is fixedly connected to an inner piston matching the inner hole, and the rear end of the inner hole of the piston rod is fixedly connected to an inner guide sleeve matching the booster rod; a radial oil hole connecting the inner and outer circles of the piston rod is provided in the piston rod in front of the piston and the inner guide sleeve, the rear end of the booster rod is fixedly connected to the bottom of the cylinder, a blind hole is provided in the front section of the booster rod, and a radial hole connecting the inner cavity of the cylinder behind the piston and its blind hole is provided in the booster rod.

2. A booster cylinder as claimed in claim 1, characterized in that Sealing components are arranged on the outer circle of the inner piston and the inner circle of the inner guide sleeve.

3. A booster cylinder as claimed in claim 1 or 2, characterized in that The rear end of the booster rod is connected to the wire ring through a thread and a plurality of set screws, and the wire ring is fixedly connected to the cylinder bottom through an external thread.

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