Manual pump type pressure oil cylinder

Abstract

The utility model belongs to the technical field of oil cylinders, and particularly relates to a manual pump type pressure oil cylinder. The oil cylinder comprises an oil cylinder body and a piston shaft, the piston shaft comprises a shaft part and a piston part; the piston part is assembled in the oil cylinder body; the manual pump type pressure oil cylinder is characterized in that the manual pump type pressure oil cylinder further comprises a manual pump mechanism; the manual pump mechanism comprises a pump body and a plunger; the pump body is assembled on the oil cylinder body, and the plunger is arranged in the pump body; and the plunger can be operated to enable the piston shaft to do telescopic motion. According to the manual pump type pressure oil cylinder, telescopic driving of the piston shaft can be achieved through the manual pump mechanism, and the pressure or the flow speed of hydraulic oil does not need to be adjusted with the help of an oil pump.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil cylinders, and particularly relates to a hand pump type pressure oil cylinder. BACKGROUND

[0002] The existing hydraulic oil cylinder generally adjusts the pressure or flow rate of hydraulic oil by using an oil pump to realize the operation of the oil cylinder. The existing hydraulic oil cylinder cannot meet the application requirement of manually driving the operation of the oil cylinder. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the application provides a hand pump type pressure oil cylinder to solve all or part of the technical problems described in the background.

[0004] The innovative idea of the application is: 1, a hand pump mechanism is arranged on the oil cylinder; 2, a fixed amount of hydraulic oil is stored in the oil cylinder; 3, a hydraulic oil circulation channel is formed between the oil cavity of the hand pump mechanism and the oil cavity of the oil cylinder; and 4, the hand pump is operated to realize the extension and retraction driving of the piston shaft of the oil cylinder.

[0005] The solution provided by the application to solve the technical problems is:

[0006] A hand pump type pressure oil cylinder comprises an oil cylinder body and a piston shaft, the piston shaft comprises a shaft part and a piston part, the piston part is assembled in the oil cylinder body, and the hand pump type pressure oil cylinder further comprises a hand pump mechanism, the hand pump mechanism comprises a pump body and a plunger, the pump body is assembled on the oil cylinder body, the plunger is arranged in the pump body, and the piston shaft is driven to perform extension and retraction by operating the plunger.

[0007] Preferably, the oil cylinder body comprises an outer cylinder body, an inner cylinder body and an upper cylinder body, the outer cylinder body is provided with an outer cylinder body inner cavity, the inner cylinder body is provided with a piston cavity, the inner cylinder body is arranged in the outer cylinder body inner cavity, the piston part is assembled in the piston cavity, the upper cylinder body is provided with a pump body hole, a circulation pipe and a communication hole, the upper cylinder body is arranged on the outer cylinder body, the pump body hole is connected to the outer cylinder body inner cavity through the circulation pipe, and the circulation pipe is located between the inner wall of the outer cylinder body inner cavity and the outer surface of the inner cylinder body, and the pump body hole is connected to the piston cavity through the communication hole.

[0008] Preferably, the outer cylinder body is further provided with an oil injection hole.

[0009] Preferably, the inner cylinder body is further provided with a circulation hole.

[0010] Preferably, the upper cylinder body is further provided with an inner cylinder body hole position, and one end of the inner cylinder body is arranged in the inner cylinder body hole position.

[0011] Preferably, the hand pump mechanism further comprises a handle part, a support part and a connecting part, the support part is arranged on the oil cylinder body, the connecting part is hinged to the support part, and the handle part is hinged to the shaft part of the piston shaft and the connecting part, respectively.

[0012] As preferred, the manual pump type pressure cylinder further comprises a pressure sensor; the pressure sensor is arranged on the cylinder body and is communicated with the oil cavity of the cylinder body.

[0013] As preferred, the manual pump type pressure cylinder further comprises a pressure relief valve; the pressure relief valve is arranged on the cylinder body and is communicated with the oil cavity of the cylinder body.

[0014] As preferred, the manual pump type pressure cylinder further comprises a ring-shaped protective cover; the ring-shaped protective cover is arranged on the cylinder body, and the manual pump mechanism is located in the ring of the ring-shaped protective cover.

[0015] As preferred, the manual pump type pressure cylinder further comprises a handle; the handle is arranged on the ring-shaped protective cover.

[0016] As preferred, the manual pump mechanism and the extending end of the piston shaft are respectively located at two ends of the cylinder body.

[0017] Beneficial technical effects:

[0018] The manual pump type pressure cylinder provided by the application can realize the extension and retraction driving of the piston shaft by operating the handle component, and the pressure or flow rate of the hydraulic oil does not need to be adjusted by means of external equipment such as a hydraulic pump during the extension and retraction movement of the piston shaft.

[0019] The technical scheme and technical effects of the application will be described in detail in combination with the drawings and specific embodiments in the specification. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 : Structure schematic view of manual pump type pressure cylinder;

[0021] Figure 2 : Structure exploded view of manual pump type pressure cylinder;

[0022] Figure 3 : Perspective view of upper cylinder body structure;

[0023] Figure 4 : Structure schematic view of ring-shaped protective cover.

[0024] FIGURE DESCRIPTION:

[0025] 1 - cylinder body, 2 - piston shaft, 3 - manual pump mechanism, 4 - pressure sensor, 5 - pressure relief valve, 6 - ring-shaped protective cover, 7 - handle;

[0026] 11 - outer cylinder body, 12 - inner cylinder body, 13 - upper cylinder body;

[0027] 111 - inner cavity of outer cylinder body, 112 - oil injection hole;

[0028] 121 - piston cavity, 122 - circulation hole;

[0029] 131 - pump body hole, 132 - circulation pipe, 133 - communication hole, 134 - inner cylinder hole position, 135 - sensor installation hole, 136 - valve installation hole;

[0030] 21 - shaft part, 22 - piston part;

[0031] 31 - pump body, 32 - plunger, 33 - handle part, 34 - support part, 35 - connecting part. DETAILED DESCRIPTION

[0032] Referring to Figures 1-4 The manual pump type pressure cylinder disclosed in the present application comprises a cylinder body 1, a piston shaft 2, and a manual pump mechanism 3.

[0033] The cylinder body 1 comprises an outer cylinder 11, an inner cylinder 12, and an upper cylinder 13.

[0034] The outer cylinder 11 is provided with an outer cylinder inner cavity 111 and an oil injection hole 112.

[0035] The inner cylinder 12 is provided with a piston cavity 121 and a circulation hole 122.

[0036] The upper cylinder 13 is provided with a pump body hole 131, a circulation pipe 132, a communication hole 133, and an inner cylinder hole position 134.

[0037] The inner cylinder 12 is arranged in the outer cylinder inner cavity 111 and a part of the inner cylinder 12 is accommodated in the inner cylinder hole position 134. The upper cylinder 13 is arranged on the outer cylinder 11; the pump body hole 131 is communicated to the outer cylinder inner cavity 111 through the circulation pipe 132 and the opening of the circulation pipe 132 is located between the inner wall of the outer cylinder inner cavity 111 and the outer surface of the inner cylinder 12; the pump body hole 131 is communicated to the piston cavity 121 of the inner cylinder 12 through the communication hole 133.

[0038] The piston shaft 2 comprises a shaft part 21 and a piston part 22; the piston part 22 is arranged at or integrally formed with one end of the shaft part 21. The piston part 22 is fitted in the piston cavity 121 of the inner cylinder 12 of the cylinder body 1, and the end of the shaft part 21, which is different from the piston part 22, extends out of the outer cylinder 11.

[0039] The manual pump mechanism 3 comprises a pump body 31, a plunger 32, a handle part 33, a support part 34, and a connecting part 35.

[0040] The pump body 31 is arranged in the pump body hole 131 on the upper cylinder body 13; the pump body 31 is provided with a pump body cavity, the plunger 32 is arranged in the pump body cavity, and the pump body cavity is communicated to the inner cavity 111 of the outer cylinder body and the piston cavity 121. The support component 34 is arranged on the oil cylinder cylinder body 1, specifically the upper cylinder body 13, the connecting component 35 is hinged to the support component 34, and the two ends of the handle component 33 are hinged to the connecting component 35 and the extending end of the plunger 32 respectively. The operation of the handle component 33 can make the plunger 32 reciprocate in the pump body cavity of the pump body 31.

[0041] Principle and effect description:

[0042] The hydraulic oil is injected from the oil injection hole 112, and then the oil injection hole 112 is closed.

[0043] The handle component 33 is operated, the plunger 32 is pressed into the pump body cavity of the pump body 31; the piston shaft 2 gradually enters the piston cavity 121, and the extending end of the piston shaft 2 is retracted into the oil cylinder cylinder body 1; the flow direction of the hydraulic oil is: from the pump body cavity of the pump body 31 to the inner wall of the inner cavity 111 of the outer cylinder body and the outer surface of the inner cylinder 12 through the circulation pipe 132, and then to the piston cavity 121 through the circulation hole 122;

[0044] The handle component 33 is operated, the plunger 32 is withdrawn from the pump body cavity of the pump body 31; the piston shaft 2 gradually withdraws from the piston cavity 121, and the extending end of the piston shaft 2 extends out of the oil cylinder cylinder body 1; the flow direction of the liquid oil is: from the piston cavity 121 to the inner wall of the inner cavity 111 of the outer cylinder body and the outer surface of the inner cylinder 12 through the circulation hole 122, and then to the pump body cavity through the circulation pipe 132.

[0045] Therefore, the operation of the handle component 33 can realize the technical effect of making the piston shaft 2 extend and retract. And in the extension and retraction process of the piston shaft 2, the pressure or flow rate of the hydraulic oil does not need to be adjusted by external equipment such as a hydraulic pump.

[0046] Figure 1 、 Figure 2 、 Figure 3 One of the feasible structures of the handle component 33 is shown in the figure, and in some changed embodiments, a rod-shaped component or shaft-shaped component can be arranged in the handle component 33 shown in the figure to facilitate the operation of the handle component 33. Figures 1 to 3

[0047] In a changed embodiment, the manual pump type pressure oil cylinder further comprises a pressure sensor 4; the pressure sensor 4 is arranged on the oil cylinder cylinder body 1 and is communicated to the oil cavity of the oil cylinder cylinder body 1 (specifically the piston cavity 121 of the inner cylinder 12). The installation and fixation of the pressure sensor 4 can be realized by arranging a sensor mounting hole 135 on the upper cylinder body 13.

[0048] ​In a variable embodiment, the manual pump type pressure cylinder further comprises a pressure relief valve 5; the pressure relief valve 5 is arranged on the cylinder body 1 and communicates with the oil cavity of the cylinder body 1 (specifically, the piston cavity 121 of the inner cylinder body 12). The installation and fixation of the pressure relief valve 5 can be realized by arranging a valve setting hole 136 on the upper cylinder body 13.

[0049] In another variable embodiment, the manual pump type pressure cylinder further comprises a ring-shaped protective cover 6; the ring-shaped protective cover 6 is arranged on the cylinder body 1, and the manual pump mechanism 3 is located within the ring of the ring-shaped protective cover 6. The edge part of the ring-shaped protective cover 6 is provided with a handle 7. The protective cover 6 is used to provide protection for the manual pump mechanism 3, and the handle 7 is used to move the manual pump type pressure cylinder.

[0050] The technical solutions and technical effects of the present application are described in detail above in combination with the drawings and specific embodiments, and it should be noted that other embodiments can be developed by those skilled in the art on the basis of this; any simple transformation and equivalent replacement without departing from the innovative concept of the present application are covered by the present application and belong to the protection scope of the present patent.

Claims

1. A hand pump type pressure cylinder, comprising a cylinder body (1), a piston shaft (2); the piston shaft (2) comprises a shaft part (21), a piston part (22); the piston part (22) is assembled in the cylinder body (1); characterized in that: the hand pump type pressure cylinder further comprises a hand pump mechanism (3); the hand pump mechanism (3) comprises a pump body (31), a plunger (32); the pump body (31) is assembled on the cylinder body (1), and the plunger (32) is arranged in the pump body (31); operating the plunger (32) can make the piston shaft (2) do telescopic movement.

2. The hand pump type pressure cylinder according to claim 1, characterized in that: the cylinder body (1) comprises an outer cylinder body (11), an inner cylinder body (12), an upper cylinder body (13); an outer cylinder body inner cavity (111) is arranged in the outer cylinder body (11); a piston cavity (121) is arranged in the inner cylinder body (12); the inner cylinder body (12) is arranged in the outer cylinder body inner cavity (111), and the piston part (22) is assembled in the piston cavity (121); a pump body hole (131), a circulation pipe (132), and a communication hole (133) are arranged on the upper cylinder body (13); the upper cylinder body (13) is arranged on the outer cylinder body (11); the pump body hole (131) is communicated to the outer cylinder body inner cavity (111) through the circulation pipe (132), and the circulation pipe (132) is located between the inner wall of the outer cylinder body inner cavity (111) and the outer surface of the inner cylinder body (12); the pump body hole (131) is communicated to the piston cavity (121) through the communication hole (133).

3. A hand pump type pressure ram according to claim 2, characterized in that: an oil injection hole (112) is further arranged on the outer cylinder body (11).

4. The hand pump type pressure cylinder according to claim 2, characterized by: a circulation hole (122) is further arranged on the inner cylinder body (12).

5. The hand pump type pressure cylinder according to claim 2, wherein: an inner cylinder body hole position (134) is further arranged on the upper cylinder body (13); one end of the inner cylinder body (12) is arranged in the inner cylinder body hole position (134).

6. The hand pump type pressure cylinder according to claim 1, characterized in that: the hand pump mechanism (3) further comprises a handle part (33), a support part (34), and a connecting part (35); the support part (34) is arranged on the cylinder body (1), and the connecting part (35) is hinged to the support part (34); the handle part (33) is respectively hinged to the connecting part (35) and the shaft part (21) of the piston shaft (2).

7. The hand pump type pressure cylinder according to claim 1, characterized in that: the hand pump type pressure cylinder further comprises a pressure sensor (4); the pressure sensor (4) is arranged on the cylinder body (1) and communicated to the oil cavity of the cylinder body (1).

8. The hand pump type pressure cylinder according to claim 1, characterized in that: the hand pump type pressure cylinder further comprises a pressure relief valve (5); the pressure relief valve (5) is arranged on the cylinder body (1) and communicated to the oil cavity of the cylinder body (1).

9. The manual pump type pressure cylinder according to claim 1, characterized in that: the manual pump type pressure cylinder further comprises a ring-shaped protective cover (6); the ring-shaped protective cover (6) is arranged on the cylinder body (1), and the manual pump mechanism (3) is located within the ring of the ring-shaped protective cover (6).

10. The manual pump type pressure cylinder according to claim 9, characterized in that: the manual pump type pressure cylinder further comprises a handle (7); the handle (7) is arranged on the ring-shaped protective cover (6).

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