Safety engineering hydraulic oil cylinder

Abstract

The utility model provides a safety engineering hydraulic oil cylinder, which belongs to the technical field of hydraulic oil cylinders, and comprises a tail plate and a head plate, oil holes are arranged at the side parts of the tail plate and the head plate, a barrel body is arranged between the tail plate and the head plate, a rod body is arranged in the barrel body, a piston is fixedly connected with the circumferential surface of the rod body, and the rod body penetrates through the head plate in a sliding manner and extends outwards. Displacement monitoring mechanisms are arranged on the tail plate and the head plate; the displacement distance of the rod body is obtained by measuring the displacement change of the movable rod, then the entering of hydraulic oil is controlled according to the displacement distance of the rod body, so that the telescopic distance of the rod body is accurately controlled, the use accuracy is improved, the tail plate, the head plate, the oil hole and the displacement sensor are all of an assembled structure, and the size and quality precision of components are guaranteed through prefabrication; the overall stability of the structure is improved, assembling is convenient, and production is easy.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic oil cylinders, and specifically relates to the technical field of hydraulic oil cylinders. Background Art

[0002] The hydraulic cylinder is a device that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation, and is widely used in the hydraulic systems of various mechanical equipment.

[0003] The Chinese patent with application number CN201811503592.3 in the prior art discloses a buffer oil cylinder, which relates to the technical field of hydraulic oil cylinders, including: an oil cylinder body, a piston rod, a left end cover and a right end cover, and also including: a piston body, an oil storage part, a first valve part, and a second valve part; during the reciprocating motion of the piston rod, when the piston body contacts the left end cover, the first valve part contacts the left end cover, the first valve part opens, and the liquid oil in the second oil chamber flows into the first oil chamber through the oil storage part to play a buffering role; when the piston body contacts the right end cover, the second valve part contacts the right end cover, the second valve part opens, and the liquid oil in the first oil chamber flows into the second oil chamber through the oil storage part to play a buffering role, thereby alleviating the technical problem that the traditional buffer column and the buffer sleeve in the prior art have special requirements for the oil cylinder structure, the tolerance of the buffer column and the buffer sleeve is difficult to control, and the buffer effect is lost if not paid attention to, thereby achieving the technical effect of simple buffer structure in the oil cylinder and obvious buffer effect.

[0004] When pressure is applied to the inlet of the hydraulic cylinder, the liquid will push the piston outward and generate a linear force; when pressure is applied to the outlet, the liquid will cause the piston to move inward and generate a force in the opposite direction. During the construction process, a more precise telescopic distance is required. Ordinary hydraulic cylinders cannot accurately control the telescopic length of the hydraulic rod, resulting in inaccurate operation. For this reason, we propose a safety engineering hydraulic cylinder. Utility Model Content

[0005] The utility model aims to provide a safety engineering hydraulic cylinder, aiming to solve the problems raised in the background technology.

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

[0007] The safety engineering hydraulic cylinder comprises a tail plate and a head plate, the sides of the tail plate and the head plate are both provided with oil holes, a cylinder is installed between the tail plate and the head plate, a rod is provided in the cylinder, a piston is fixedly connected to the circumferential surface of the rod, the rod slides through the head plate and extends outwards, and a displacement monitoring mechanism is provided on the tail plate and the head plate.

[0008] As a preferred solution of the utility model, the displacement monitoring mechanism includes a fixed rod, a displacement sensor, a movable rod and a clamp, the displacement sensor is fixedly connected to the side of the tail plate close to the head plate, the fixed rod is fixedly connected between the head plate and the displacement sensor, the movable rod is slidably connected in the fixed rod, the clamp is fixedly connected to the end of the movable rod, and the clamp is detachably connected to the circumferential surface of the rod body.

[0009] As a preferred solution of the utility model, a groove is provided at the end of the rod body, and the clamp is fixedly connected in the groove by bolts.

[0010] As a preferred solution of the utility model, the end of the rod body is fixedly connected with a first ear shaft, and the side of the tail plate away from the head plate is fixedly connected with a second ear shaft.

[0011] As a preferred solution of the utility model, a first sealing ring and a second sealing ring are fixedly connected to the circumferential surface of the piston.

[0012] As a preferred solution of the utility model, a positioning rod is fixedly connected between the tail plate and the head plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In this scheme, hydraulic oil enters the cylinder to push the rod to extend and retract. When the rod is extended and retracted, it will drive the clamp to move, and the movable rod moves with the clamp. The displacement sensor is a device for measuring the position, position change or displacement of an object. By measuring the displacement change of the movable rod, the displacement distance of the rod is obtained, and then the entry of hydraulic oil is controlled according to the displacement distance of the rod, so as to achieve precise control of the extension and retraction distance of the rod and improve the accuracy of use.

[0015] 2. The tail plate, head plate, oil hole and displacement sensor of this scheme all adopt assembled structure. The prefabrication ensures the size and quality accuracy of the components, improves the overall stability of the structure, and is convenient for assembly and easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached picture:

[0018] Figure 1 It is an overall diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a side view of the utility model;

[0021] Figure 4 It is an exploded view of the utility model.

[0022] In the figure: 1, tail plate; 2, head plate; 3, oil hole; 4, cylinder; 5, positioning rod; 6, rod body; 7, first ear shaft; 8, piston; 9, first sealing ring; 10, second sealing ring; 11, second ear shaft; 12, fixed rod; 13, displacement sensor; 14, moving rod; 15, clamp; 16, groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] See also Figure 1-Figure 4 , the technical solution provided by this embodiment is as follows:

[0026] The safety engineering hydraulic cylinder comprises a tail plate 1 and a head plate 2. Oil holes 3 are arranged on the sides of the tail plate 1 and the head plate 2. A cylinder 4 is installed between the tail plate 1 and the head plate 2. A rod 6 is arranged in the cylinder 4. A piston 8 is fixedly connected to the circumferential surface of the rod 6. The rod 6 slides through the head plate 2 and extends outward. Displacement monitoring mechanisms are arranged on the tail plate 1 and the head plate 2.

[0027] In a specific embodiment of the utility model, the tail plate 1, the head plate 2 and the cylinder 4 constitute the basic structure of the oil cylinder, the rod body 6 is the basic telescopic structure, the piston 8 is used to space the internal space of the cylinder 4, and the oil holes 3 are designed on the tail plate 1 and the head plate 2. The hydraulic oil enters the rod body 6 through the oil holes 3 at different positions to control the movement of the piston 8, and then pushes the rod body 6 to expand and contract, so as to realize the basic telescopic function of the oil cylinder. In this solution, a fixed rod 12, a displacement sensor 13 and a moving rod 14 are installed between the tail plate 1 and the head plate 2. When the rod body 6 expands and contracts, it will drive the clamp 15 to move. The moving rod 14 moves with the clamp 15, and the displacement sensor 13 is a device for measuring the position, position change or displacement of an object. By measuring the displacement change of the moving rod 14, the displacement distance of the rod body 6 is obtained, and then the entry of hydraulic oil is controlled according to the displacement distance of the rod body 6, so as to achieve precise control of the telescopic distance of the rod body 6 and improve the accuracy of use. In addition, the tail plate 1, head plate 2, oil hole 3 and displacement sensor 13 of this scheme all adopt an assembled structure, and prefabrication ensures the size and quality accuracy of the components, improves the overall stability of the structure, and is convenient for assembly and easy to produce.

[0028] Specifically, the displacement monitoring mechanism includes a fixed rod 12, a displacement sensor 13, a movable rod 14 and a clamp 15. The displacement sensor 13 is fixedly connected to the side of the tail plate 1 close to the head plate 2, the fixed rod 12 is fixedly connected between the head plate 2 and the displacement sensor 13, the movable rod 14 is slidably connected in the fixed rod 12, the clamp 15 is fixedly connected to the end of the movable rod 14, and the clamp 15 is detachably connected to the circumferential surface of the rod body 6.

[0029] In the specific embodiment of the present utility model, the displacement sensor 13 is the core part of the displacement sensor, which is responsible for converting the displacement of the object into a measurable physical quantity. A capacitive displacement sensor can be used, which consists of two electrodes, one is fixed and the other is movable. When the movable rod 14 moves, the capacitance value will change, thereby obtaining accurate displacement data. The above solutions are all existing technologies and will not be elaborated on.

[0030] Specifically, a groove 16 is provided at the end of the rod body 6 , and the clamp 15 is fixedly connected in the groove 16 by bolts.

[0031] In a specific embodiment of the present invention, the hoop 15 is installed in the groove 16, so that when the rod body 6 is telescopically moved, the hoop 15 is driven to move, and then the movable rod 14 is driven to telescopically synchronously, so as to measure the displacement data.

[0032] Specifically, the end of the rod body 6 is fixedly connected to the first ear shaft 7 , and the side of the tail plate 1 away from the head plate 2 is fixedly connected to the second ear shaft 11 .

[0033] In a specific embodiment of the present invention, the second ear shaft 11 and the first ear shaft 7 are both made of high-strength alloy material, and have the characteristics of compression resistance, bending resistance, tension resistance, fatigue resistance, etc., and can maintain stability and reliability in harsh working environments.

[0034] Specifically, a first sealing ring 9 and a second sealing ring 10 are fixedly connected to the circumferential surface of the piston 8 .

[0035] In a specific embodiment of the utility model, a first sealing ring 9 and a second sealing ring 10 are designed on the piston 8 to ensure the sealing effect between the piston 8 and the cylinder 4, reduce the wear between the piston 8 and the inner wall of the cylinder 4, and extend the service life.

[0036] Specifically, a positioning rod 5 is fixedly connected between the tail plate 1 and the head plate 2 .

[0037] In a specific embodiment of the present invention, both ends of the positioning rod 5 pass through the tail plate 1 and the head plate 2 and are then fixed by bolts. Preferably, the positioning rod 5 is arranged at the four corners of the tail plate 1 and the head plate 2, and the fixing structure is more stable.

[0038] Working principle: hydraulic oil enters the cylinder 4 to push the rod 6 to extend or retract. When the rod 6 extends or retracts, it will drive the clamp 15 to move, and the movable rod 14 moves with the clamp 15. The displacement sensor 13 is a device for measuring the position, position change or displacement of an object. By measuring the displacement change of the movable rod 14, the displacement distance of the rod 6 is obtained, and then the entry of hydraulic oil is controlled according to the displacement distance of the rod 6, so as to achieve precise control of the extension and retraction distance of the rod 6 and improve the accuracy of use.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Safety engineering hydraulic cylinder, characterized by: The invention comprises a tail plate (1) and a head plate (2), the sides of the tail plate (1) and the head plate (2) are both provided with oil holes (3), a cylinder (4) is installed between the tail plate (1) and the head plate (2), a rod (6) is arranged in the cylinder (4), a piston (8) is fixedly connected to the circumferential surface of the rod (6), the rod (6) slides through the head plate (2) and extends outwards, and a displacement monitoring mechanism is arranged on the tail plate (1) and the head plate (2).

2. The safety engineering hydraulic cylinder according to claim 1, characterized in that: The displacement monitoring mechanism comprises a fixed rod (12), a displacement sensor (13), a movable rod (14) and a clamp (15); the displacement sensor (13) is fixedly connected to a side of the tail plate (1) close to the head plate (2); the fixed rod (12) is fixedly connected between the head plate (2) and the displacement sensor (13); the movable rod (14) is slidably connected inside the fixed rod (12); the clamp (15) is fixedly connected to the end of the movable rod (14); and the clamp (15) is detachably connected to the circumferential surface of the rod body (6).

3. The safety engineering hydraulic cylinder according to claim 2, characterized in that: A groove (16) is provided at the end of the rod body (6), and the clamp (15) is fixedly connected in the groove (16) by means of bolts.

4. The safety engineering hydraulic cylinder according to claim 3, characterized in that: The end of the rod body (6) is fixedly connected to a first ear shaft (7), and the side of the tail plate (1) away from the head plate (2) is fixedly connected to a second ear shaft (11).

5. The safety engineering hydraulic cylinder according to claim 4, characterized in that: A first sealing ring (9) and a second sealing ring (10) are fixedly connected to the circumferential surface of the piston (8).

6. The safety engineering hydraulic cylinder according to claim 5, characterized in that: A positioning rod (5) is fixedly connected between the tail plate (1) and the head plate (2).

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