Servo lifting oil cylinder

Abstract

The utility model relates to the technical field of lifting oil cylinders, in particular to a servo lifting oil cylinder which comprises an oil cylinder body, an oil cylinder rod and an installation seat, the installation seat is fixedly connected to the lower end of the oil cylinder body, the oil cylinder rod is connected to the inner side of the oil cylinder body in a sliding mode, the outer wall of the oil cylinder body is fixedly connected with a fixing pipe in a sleeved mode, and the fixing pipe is connected with the installation seat. A servo oil cylinder magnetic ruler guiding structure is arranged on the outer side of the oil cylinder rod, and a two-way installation positioning structure is arranged at the lower end of the installation base. According to the servo lifting oil cylinder, the magnetic scale slides in the extension sleeve in a surrounding mode, the influence of dust and other factors on the magnetic scale exposed in the external environment is reduced, the magnetic scale can slide in a lubricating mode, resistance and abrasion are greatly reduced, and therefore the magnetic scale of the servo oil cylinder can stop at the measuring position more accurately, and the measuring accuracy is improved. And the servo control effect of the servo lifting oil cylinder is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lifting oil cylinder, specifically to a kind of servo lifting oil cylinder. BACKGROUND

[0002] Servo lifting oil cylinder is a kind of hydraulic device that realizes high-precision position, speed and force control through external control. It combines servo motor technology and traditional hydraulic cylinder execution element, and realizes high-precision control of execution mechanism by servo motor driving to convert rotary motion into linear motion.

[0003] For example, the authorized announcement number "CN217682552U" is named a kind of servo lifting oil cylinder, and the magnetic head is arranged on the outside of the cylinder body, and is fixed relative to the cylinder body, and the magnetic head is used to read the displacement data on the magnetic scale. With the setting of the above structure, since the magnetic scale is installed on the outside of the cylinder body, it is avoided to be impacted by high pressure or oil, but the current servo lifting oil cylinder can guide the magnetic head to be installed on the outside of the lifting oil cylinder to reduce the interference of the internal magnetic scale. However, the external lifting magnetic scale is directly exposed to the external environment. Not only the dust and sundries in the external environment can enter the space of the magnetic scale sliding to cause blockage and increase the friction resistance, but also the wear degree of the magnetic scale is increased, which finally causes the actual lifting data of the magnetic scale to have large error and data deviation, and causes the servo control effect of the servo lifting oil cylinder to be unsatisfactory.

[0004] At the same time, the existing servo lifting oil cylinder can be installed and fixed at the specified position due to the base plane design, but the conventional installation and fixing mode of the base is basically carried out by screwing the bolt and nut, so the servo lifting oil cylinder can only be fixed vertically at the position to be used. When fixed horizontally to the wall or facility, the installation is easily limited, which causes the use effect of the servo lifting oil cylinder to be poor. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of servo lifting oil cylinders for the servo control effect of the existing servo lifting oil cylinder is poor and the use effect is poor, and proposes a kind of servo lifting oil cylinder.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of servo lifting oil cylinder is designed, including oil cylinder body, oil cylinder cylinder rod and mounting seat, the mounting seat is fixedly connected at the lower end of oil cylinder body, the oil cylinder cylinder rod is slidably connected at the inner side of oil cylinder body, the outer wall of oil cylinder body is fixedly sleeved with fixed sleeve, the outer side of oil cylinder cylinder rod is equipped with servo oil cylinder magnetic scale guide structure, the lower end of mounting seat is equipped with two-way installation positioning structure.

[0008] Preferably, the servo oil cylinder magnetic ruler guiding structure comprises a protrusion and a reserved hole, the protrusion is fixedly installed on one side of the outer wall of the oil cylinder rod, the lower end of the protrusion is fixedly installed with a magnetic ruler through a bolt, the reserved hole is fixedly arranged on the top end of the fixed sleeve, the inside of the reserved hole is fixedly connected with a lubricating cavity, and the top end of the fixed sleeve is fixedly connected with a sealing sleeve.

[0009] Preferably, the outer side of the magnetic ruler is slidably connected with the inner wall of the sealing sleeve, and the outer wall of the magnetic ruler is movably connected with the inside of the lubricating cavity.

[0010] Preferably, the lower end of the fixed sleeve is provided with a magnetic ruler protection structure, the magnetic ruler protection structure comprises an extension sleeve and a limiting block, the extension sleeve is fixedly installed on the lower end of the fixed sleeve, the inside of the extension sleeve is further provided with a sliding cavity, the lower end of the sliding cavity is fixedly provided with an exhaust hole, and the limiting block is fixedly installed on the lower end of the magnetic ruler.

[0011] Preferably, the two-way mounting positioning structure comprises side positioning plates and transverse positioning plates, two side positioning plates are fixedly installed on the lower end of the mounting seat, the inside of the two side positioning plates is fixedly provided with a first mounting hole, two transverse positioning plates are fixedly connected on the lower end of the side positioning plate, and the inside of the two transverse positioning plates is fixedly provided with a second mounting hole.

[0012] Preferably, the inside top end of the sliding cavity is movably connected with the upper side of the limiting block, and the inner wall of the sliding cavity is slidably connected with the outer side of the magnetic ruler.

[0013] The servo lifting oil cylinder has the advantages that the magnetic ruler slides in the extension sleeve in the surrounding mode, the magnetic ruler is not exposed to the external environment and is not affected by dust and other factors, the magnetic ruler can be lubricated and slid, the resistance and abrasion are greatly reduced, the magnetic ruler of the servo oil cylinder can be more accurately stopped at the measuring position, and the servo control effect of the servo lifting oil cylinder is improved.

[0014] The side positioning plates are arranged in two, the side positioning plates are vertically welded on the lowermost ends of the mounting seat, the servo lifting oil cylinder can be transversely fixed on the wall surface or the like in need of use by penetrating the first mounting holes in the inside with externally arranged bolts, the two transverse positioning plates are transversely welded on the lower end of the side positioning plate, the servo lifting oil cylinder can be vertically fixed on the specified position by penetrating the second mounting holes in the inside with externally arranged bolts, the installation condition of the lifting oil cylinder can be changed according to actual requirements, the adaptability is better, and the use effect of the servo lifting oil cylinder is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is Figure 1a front view of a schematic cross section of

[0017] Figure 3 is Figure 1 a right side view of a schematic cross section of

[0018] Figure 4 is Figure 2 a magnified view of part A of

[0019] Figure 5 is Figure 2 a magnified view of part B of

[0020] Figure 6 is Figure 2 a magnified view of part C of

[0021] In the figure: 1, oil cylinder body, 2, oil cylinder rod, 3, fixed sleeve, 4, mounting seat, 5, servo oil cylinder magnetic scale guide structure, 51, protruding block, 52, magnetic scale, 53, sealing sleeve, 54, reserved hole, 55, lubricating cavity, 6, magnetic scale protection structure, 61, extension sleeve, 62, sliding cavity, 63, limiting block, 64, exhaust hole, 7, two-way mounting positioning structure, 71, side positioning plate, 72, first mounting hole, 73, transverse positioning plate, 74, second mounting hole. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings:

[0023] Example 1

[0024] Please refer to Figures 1-6 : In this embodiment, a servo lifting oil cylinder, comprising an oil cylinder body 1, an oil cylinder rod 2 and a mounting seat 4, the mounting seat 4 is fixedly connected to the lower end of the oil cylinder body 1, the mounting seat 4 is used for connecting the side positioning plate 71 and the transverse positioning plate 73 of the two fixed lifting oil cylinders below, the oil cylinder rod 2 is slidingly connected to the inner side of the oil cylinder body 1, and the diameter of the oil cylinder rod 2 is consistent with the inner diameter of the oil cylinder body 1.

[0025] In this way, when the lower oil cylinder body 1 is started by connecting the power supply, the inner side oil pressure can output the oil cylinder rod 2 outward, the outer wall of the oil cylinder body 1 is fixedly sleeved with a fixed sleeve 3, the fixed sleeve 3 is installed on the outer side of the oil cylinder body 1 in a welding manner, the oil cylinder body 1 and the oil cylinder rod 2 both belong to the prior art disclosed in the authorized announcement No. CN217682552U of the contrast file, the outer side of the oil cylinder rod 2 is provided with a servo oil cylinder magnetic scale guide structure 5, and the lower end of the mounting seat 4 is provided with a two-way mounting positioning structure 7.

[0026] The servo oil cylinder magnetic ruler guiding structure 5 comprises a protrusion 51 and a reserved hole 54, the protrusion 51 is fixedly installed on one side of the outer wall of the oil cylinder cylinder rod 2, the protrusion 51 can be welded on one side of the outer wall of the oil cylinder cylinder rod 2 and protruded, the lower end of the protrusion 51 is fixedly installed with a magnetic ruler 52 through a bolt, the magnetic ruler 52 is a technical means in the prior art, and a magnetic head is arranged in cooperation with the magnetic ruler 52, the magnetic head is arranged on the outer side of the oil cylinder cylinder body 1 and is fixed relative to the oil cylinder cylinder body 1, the magnetic head is used for reading displacement data on the magnetic ruler 3, the magnetic head needs to be connected with a servo system to complete signal processing, and the displacement control of the oil cylinder cylinder rod 2 can be completed through the servo system control of a hydraulic valve.

[0027] The reserved hole 54 is fixedly arranged at the top end of the fixed sleeve 3, the reserved hole 54 is upwardly arranged at the top end of the fixed sleeve 3, and the reserved hole 54 can introduce external lubricating oil into the inside of the lubricating cavity 55. When the magnetic ruler 52 slides up and down along the inside of the fixed sleeve 3, the lubricating cavity 55 can play a role in lubricating the magnetic ruler 52 to reduce wear. The inside of the reserved hole 54 is fixedly connected with the lubricating cavity 55. The top end of the fixed sleeve 3 is fixedly connected with a sealing sleeve 53, and the sealing sleeve 53 is made of rubber.

[0028] The rubber sealing sleeve 53 is sleeved on the outer wall of the magnetic ruler 52, so that the magnetic ruler 52 is not easily affected by external dust during sliding. The outer side of the magnetic ruler 52 is slidably connected with the inner wall of the sealing sleeve 53, and the outer wall of the magnetic ruler 52 is movably connected with the inside of the lubricating cavity 55.

[0029] The lower end of the fixed sleeve 3 is provided with a magnetic ruler protection structure 6. The magnetic ruler protection structure 6 comprises an extension sleeve 61 and a limiting block 63. The extension sleeve 61 is fixedly installed at the lower end of the fixed sleeve 3 and is made of stainless steel metal material which is not prone to rust. The extension sleeve 61 is welded at the lower end of the fixed sleeve 3. The inside of the extension sleeve 61 is further provided with a sliding cavity 62, and the inside of the sliding cavity 62 is basically consistent with the shape of the magnetic ruler 52. Therefore, the magnetic ruler 52 can slide up and down in the sliding cavity 62 along with the start of the oil cylinder cylinder body 1.

[0030] The lower end of the sliding cavity 62 is fixedly provided with an exhaust hole 64. When the magnetic ruler 52 slides downward, the air in the sliding cavity 62 can be extruded to be discharged through the lowermost exhaust hole 64, so that the air pressure is balanced and the resistance is reduced. The limiting block 63 is fixedly installed at the lower end of the magnetic ruler 52. The inside top end of the sliding cavity 62 is movably connected with the upper side of the limiting block 63. When the limiting block 63 is raised to the uppermost position, it will be clamped at the top end of the sliding cavity 62. Therefore, the limiting block 63 can prevent the magnetic ruler 52 from being pulled out and separated from the limiting block. The inner wall of the sliding cavity 62 is slidably connected with the outer side of the magnetic ruler 52.

[0031] The magnetic ruler 52 is used to slide inside the extension sleeve 61 in the surrounding mode, which reduces the exposure of the magnetic ruler 52 to dust and other factors in the external environment. The magnetic ruler 52 can also be lubricated and slide, and the resistance and wear are greatly reduced. In this way, the magnetic ruler 52 of the servo oil cylinder can be more accurately stopped at the measurement position, and the servo control effect of the servo lifting oil cylinder is improved.

[0032] Working principle:

[0033] The servo lifting oil cylinder is a mature existing technology. Through the cooperation of the servo motor and the hydraulic cylinder, the servo motor accurately controls the rotation angle and speed of the motor by receiving the command signal from the control system. The motor is connected to the piston rod of the hydraulic cylinder through a reducer, and the rotary motion is converted into linear motion of the piston rod.

[0034] Inside the hydraulic cylinder, the piston divides the working chamber into two independent oil chambers. When the piston rod extends, the volume of one side of the oil chamber increases to form negative pressure, and the volume of the other side of the oil chamber decreases to form positive pressure. Through the external oil supply system, hydraulic oil is delivered to the corresponding oil chamber to realize the extension or retraction of the piston rod. The control system continuously adjusts the operating state of the servo motor according to the feedback signal, thereby realizing accurate control of the position, speed and force of the hydraulic cylinder.

[0035] Lifting servo structure of servo lifting oil cylinder:

[0036] The mounting seat 4 is used to connect the side positioning plate 71 and the horizontal positioning plate 73 of the two fixed lifting oil cylinders below. The diameter of the oil cylinder rod 2 matches the inner diameter of the oil cylinder body 1, so that when the power is turned on to activate the oil cylinder body 1 below, the internal oil pressure can be output to push the oil cylinder rod 2 outward.

[0037] The protrusion 51 can be welded on one side of the outer wall of the upper oil cylinder rod 2. The magnetic ruler 52 is a technical means already existing in the comparison file. A magnetic head is provided in cooperation with the magnetic ruler 52. The magnetic head is arranged on the outside of the oil cylinder body 1 and is fixed relative to the oil cylinder body 1. The magnetic head is used to read the displacement data on the magnetic ruler 3. The magnetic head needs to be connected to the servo system to complete signal processing. Through the servo system control hydraulic valve, the displacement control of the oil cylinder rod 2 can be completed. The reserved hole 54 can introduce external lubricating oil into the lubricating cavity 55. When the magnetic ruler 52 slides up and down along the inside space of the fixed sleeve 3, the lubricating cavity 55 can play a role in lubricating and reducing wear of the magnetic ruler 52. The sealing sleeve 53 is made of rubber material and is sleeved on the outer wall above the magnetic ruler 52. In this way, the magnetic ruler 52 is not easily affected by external dust during sliding.

[0038] Magnetic ruler protection structure of servo lifting oil cylinder:

[0039] The extension sleeve 61 is made of stainless steel metal material which is not easy to rust, the extension sleeve 61 is welded at the lower end of the fixed sleeve 3, the inner side of the sliding cavity 62 is basically consistent with the shape of the magnetic ruler 52, so that the magnetic ruler 52 can slide up and down on the inner side of the sliding cavity 62 along with the starting of the oil cylinder body 1, when the magnetic ruler 52 slides downward, the air inside the sliding cavity 62 can be extruded to be discharged along the lowermost end exhaust hole 64, so that the balance air pressure is facilitated to be balanced and the resistance is reduced, when the limiting block 63 is raised to the uppermost position, the limiting block 63 is clamped at the top end of the sliding cavity 62, so that the magnetic ruler 52 can be prevented from being pulled out and separated from the limiting.

[0040] Embodiment 2:

[0041] Please refer to Figures 1-6 In the embodiment, the servo lifting oil cylinder comprises a bidirectional mounting and positioning structure 7, the bidirectional mounting and positioning structure 7 comprises side positioning plates 71 and transverse positioning plates 73, two side positioning plates 71 are fixedly installed at the lower ends of the two sides of the mounting seat 4, the side positioning plate 71 is provided with two, the side positioning plate 71 is vertically welded at the lower ends of the two sides of the mounting seat 4, so that the servo lifting oil cylinder can be transversely fixed on the wall surface or the like in the position required to be used by means of external bolts penetrating through the first mounting holes 72 in the inside, the first mounting holes 72 are fixedly arranged in the inner sides of the two side positioning plates 71, two transverse positioning plates 73 are fixedly connected at the lower ends of the two side positioning plates 71, the two transverse positioning plates 73 are transversely welded at the lower ends of the side positioning plates 71, and the servo lifting oil cylinder can be vertically fixed on the specified position by means of external bolts penetrating through the second mounting holes 74 in the inside, the second mounting holes 74 are fixedly arranged in the inner sides of the two transverse positioning plates 73.

[0042] Working principle:

[0043] The side positioning plate 71 is provided with two, the side positioning plate 71 is vertically welded at the lower ends of the two sides of the mounting seat 4, so that the servo lifting oil cylinder can be transversely fixed on the wall surface or the like in the position required to be used by means of external bolts penetrating through the first mounting holes 72 in the inside, the two transverse positioning plates 73 are transversely welded at the lower ends of the side positioning plates 71, and the servo lifting oil cylinder can be vertically fixed on the specified position by means of external bolts penetrating through the second mounting holes 74 in the inside, so that the mounting conditions of the lifting oil cylinder can be changed according to actual requirements, the adaptability is better, and the use effect of the servo lifting oil cylinder is improved.

[0044] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of claims.

Claims

1. A servo lifting cylinder, comprising a cylinder body (1), a cylinder rod (2), and a mounting base (4), wherein the mounting base (4) is fixedly connected to the lower end of the cylinder body (1), and the cylinder rod (2) is slidably connected to the inner side of the cylinder body (1), characterized in that: The outer wall of the cylinder body (1) is fixedly fitted with a fixed sleeve (3), the outer side of the cylinder rod (2) is provided with a servo cylinder magnetic ruler guide structure (5), and the lower end of the mounting base (4) is provided with a bidirectional mounting positioning structure (7).

2. The servo lifting cylinder according to claim 1, characterized in that: The servo cylinder magnetic ruler guide structure (5) includes a protrusion (51) and a reserved hole (54). The protrusion (51) is fixedly installed on one side of the outer wall of the cylinder rod (2). The lower end of the protrusion (51) is fixedly installed with a magnetic ruler (52) by bolts. The reserved hole (54) is fixedly opened at the top of the fixed sleeve (3). The inner side of the reserved hole (54) is fixedly connected to a lubrication cavity (55). The top outer wall of the fixed sleeve (3) is fixedly connected with a sealing sleeve (53).

3. The servo lifting cylinder according to claim 2, characterized in that: The outer side of the magnetic ruler (52) is slidably connected to the inner wall of the sealing sleeve (53), and the outer wall of the magnetic ruler (52) is movably connected to the inner side of the lubrication cavity (55).

4. The servo lifting cylinder according to claim 1, characterized in that: The lower end of the fixed sleeve (3) is provided with a magnetic ruler protection structure (6). The magnetic ruler protection structure (6) includes an extension sleeve (61) and a limiting block (63). The extension sleeve (61) is fixedly installed at the lower end of the fixed sleeve (3). The inner side of the extension sleeve (61) is also provided with a sliding cavity (62). The lower end of the sliding cavity (62) is fixedly provided with an exhaust hole (64). The limiting block (63) is fixedly installed at the lower end of the magnetic ruler (52).

5. The servo lifting cylinder according to claim 1, characterized in that: The bidirectional mounting and positioning structure (7) includes a side positioning plate (71) and a horizontal positioning plate (73). The two side positioning plates (71) are fixedly installed on both sides of the lower end of the mounting base (4). The inner sides of the two side positioning plates (71) are fixedly provided with first mounting holes (72). The two horizontal positioning plates (73) are fixedly connected to the lower end of the side positioning plates (71). The inner sides of the two horizontal positioning plates (73) are fixedly provided with second mounting holes (74).

6. The servo lifting cylinder according to claim 4, characterized in that: The inner top of the sliding cavity (62) is movably connected to the upper part of the limiting block (63), and the inner wall of the sliding cavity (62) is slidably connected to the outer side of the magnetic ruler (52).

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