Hydraulic hoist with positioning function

Abstract

The utility model relates to the technical field of hydraulic hoists, in particular to a hydraulic hoist with a positioning function, which comprises a cylinder body, a piston and a piston rod, the piston is arranged in the cylinder body, one end of the piston rod extends into the cylinder body and is fixedly connected with the piston, and a capacitance sensor is adjustably mounted on the outer side wall of the cylinder body. A containing cavity is formed in the piston rod, a to-be-detected object used for being detected by the capacitance sensor is arranged in the containing cavity, and the to-be-detected object is used for changing capacitance at the position where the to-be-detected object is located. The hydraulic hoist can be used in a complex environment and accurately detect whether the piston rod moves to a specified stroke or not, and it is ensured that a gate reaches a specified position.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic hoists, in particular to a hydraulic hoist with a positioning function. Background Art

[0002] The hydraulic gate hoist is generally composed of a hydraulic system and a hydraulic cylinder. The hydraulic system includes a power device (such as a hydraulic pump), a control and adjustment device (such as a hydraulic control valve group) and auxiliary devices (such as an oil tank, an oil filter, etc.). The hydraulic cylinder is an actuator in the hydraulic transmission. The reciprocating motion of the piston drives the connecting rod and the gate connected to the piston to make linear motion to achieve the purpose of opening and closing the orifice. The displacement sensor of the hydraulic gate hoist is used to measure the displacement of the hydraulic gate hoist piston or gate to determine the degree of opening or closing. However, the existing displacement sensors have detection errors in some special environments (such as liquid environments such as water), and they cannot even be used. At the same time, the operating opening of the gate hoist cannot obtain more accurate position feedback, which reduces the control accuracy and cannot timely know that the piston rod of the hydraulic gate hoist has moved to the specified position, and the position of the displacement sensor is fixed and cannot be adjusted. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the problem that the displacement sensor in the prior art has detection errors in some special environments (such as liquid environments such as water), or even cannot be used, and at the same time the operating opening of the gate hoist cannot obtain more accurate position feedback, resulting in reduced control accuracy and inability to timely know that the piston rod of the hydraulic gate hoist has moved to the specified position, a hydraulic gate hoist with a positioning function is provided.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a hydraulic gate hoist with a positioning function, including a cylinder body, a piston and a piston rod, the piston is arranged in the cylinder body, one end of the piston rod extends into the cylinder body and is fixedly connected to the piston, a capacitance sensor is adjustably installed on the outer wall of the cylinder body, a containing cavity is opened on the piston rod, a test object for detection by the capacitance sensor is arranged in the containing cavity, and the test object is used to change the capacitance at its location, through the design of the adjustable capacitance sensor and the arrangement of the test object for detection by the capacitance sensor in the piston rod, the hydraulic gate hoist can be used in a complex environment and accurately detect whether the piston rod has moved to a specified stroke, to ensure that the gate reaches a specified position.

[0005] It further comprises that the capacitive sensor and the cylinder body are connected via an adjusting component, and the adjusting component is used to enable the capacitive sensor to move along the axial direction of the cylinder body.

[0006] The invention further comprises an adjusting component including a slide rail and a slider matching the slide rail, the slide rail is fixedly connected to the cylinder body, the extension direction of the slide rail is the same as the extension direction of the axis of the cylinder body, the slider is slidably connected to the slide rail, a groove for accommodating a capacitive sensor is provided on the slider, and the capacitive sensor is installed in the groove.

[0007] In order to solve the problem that the free movement of the slide rail and the slider structure makes the position of the capacitive sensor easy to change, the adjustment component further includes a locking piece, and the locking piece is threadedly connected to the slider.

[0008] When the slide block is fixed relative to the slide rail, the locking member abuts against the slide rail.

[0009] In order to solve the problem that the position of the capacitive sensor needs to be manually adjusted, a drive assembly is further installed on the cylinder body, the output end of the drive assembly is transmission-connected to the slider, and the drive assembly is used to provide power for the movement of the slider.

[0010] It further includes a driving assembly including an upper mounting plate, a driving member, a screw and a movable seat. The upper mounting plate is fixedly connected to the upper part of the cylinder body, the driving member is fixedly connected to the upper mounting plate, the output end of the driving member and the input end of the screw are transmission-connected, the driving member is used to drive the screw to rotate, the screw and the movable seat are threadedly connected, and the movable seat is fixedly connected via a connecting rod and a slider.

[0011] The driving assembly further includes a lower mounting plate, the lower mounting plate is fixedly connected to the lower part of the cylinder body, and the output end of the lead screw is rotatably connected to the lower mounting plate.

[0012] The beneficial effects of the utility model are as follows: the utility model provides a hydraulic gate hoist with a positioning function, which, through the design of an adjustable capacitive sensor and the arrangement of an object to be detected by the capacitive sensor in the piston rod, enables the hydraulic gate hoist to be used in a complex environment and accurately detect whether the piston rod has moved to a specified stroke, thereby ensuring that the gate reaches a specified position. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This utility model Figure 1 A schematic cross-sectional structure diagram of ;

[0016] Figure 3 This utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: 1, cylinder body, 2, piston, 3, piston rod, 4, capacitive sensor, 5, object to be measured, 6, adjustment component, 61, slide rail, 62, slider, 7, drive component, 71, upper mounting plate, 72, drive member, 73, lead screw, 74, moving seat, 75, lower mounting plate. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] Embodiment 1:

[0020] like Figure 1 It is a structural schematic diagram of the utility model, a hydraulic gate hoist with positioning function, including a cylinder 1, a piston 2 and a piston rod 3. The piston 2 is arranged in the cylinder 1, one end of the piston rod 3 extends into the cylinder 1 and is fixedly connected to the piston 2. A capacitive sensor 4 is adjustable and installed on the outer wall of the cylinder 1. Figure 2 As shown, a containing cavity is provided on the piston rod 3, and a test object 5 for detection by a capacitive sensor 4 is arranged in the containing cavity. The test object 5 is used to change the capacitance at its location. Through the design of the adjustable capacitive sensor 4 and the arrangement of the test object 5 for detection by the capacitive sensor in the piston rod, the hydraulic gate opening and closing machine can be used in a complex environment and accurately detect whether the piston rod 3 has moved to a specified stroke, thereby ensuring that the gate reaches a specified position.

[0021] The object to be measured 5 can be a variable capacitor, a piezoelectric capacitor, a varactor diode or a metal (different from the material of the piston rod) or other object used to change capacitance.

[0022] like Figure 1 , Figure 2 As shown, the capacitive sensor 4 and the cylinder body 1 are connected via an adjusting component 6 , and the adjusting component 6 is used to enable the capacitive sensor 4 to move axially along the cylinder body 1 , so that the capacitive sensor 4 can move freely.

[0023] like Figure 2 , Figure 3 As shown, the adjustment component 6 includes a slide rail 61 and a slider 62 matching the slide rail 61. The slide rail 61 is fixedly connected to the cylinder body 1. The extension direction of the slide rail 61 is the same as the axial extension direction of the cylinder body 1. The slider 62 is slidably connected to the slide rail 61. The slider 62 is provided with a groove for accommodating the capacitive sensor 4. The capacitive sensor 4 is installed in the groove. The design of the slider 62 and the slide rail 61 makes the movement of the capacitive sensor 4 stable.

[0024] A driving assembly 7 is installed on the cylinder body 1 , and an output end of the driving assembly 7 is drivingly connected to the slider 62 . The driving assembly 7 is used to provide power for the movement of the slider 62 .

[0025] like Figure 1 , Figure 2 As shown, the driving assembly 7 includes an upper mounting plate 71, a driving member 72, a lead screw 73 and a moving seat 74. The upper mounting plate 71 is fixedly connected to the upper portion of the cylinder body 1, the driving member 72 is fixedly connected to the upper mounting plate 71, the driving member 72 is a motor, the output end of the driving member 72 and the input end of the lead screw 73 are transmission-connected, the driving member 72 is used to drive the lead screw 73 to rotate, the lead screw 73 and the moving seat 74 are threadedly connected, and the moving seat 74 is fixedly connected by a connecting rod and a slider 62, so that the position of the capacitive sensor 4 can be moved, and the position movement of the capacitive sensor 4 is accurate.

[0026] The driving assembly 7 also includes a lower mounting plate 75, which is fixedly connected to the lower portion of the cylinder body 1, and the output end of the lead screw 73 is rotatably connected to the lower mounting plate 75, so that the operation of the lead screw 73 is stable and shaking is avoided.

[0027] Embodiment 2:

[0028] The technical feature that distinguishes Example 2 from Example 1 is that the slider 62 is fixed.

[0029] The adjustment assembly 6 also includes a locking member, which is threadedly connected to the slider 62.

[0030] When the slide block 62 is fixed relative to the slide rail 61 , the locking member abuts against the slide rail 61 .

[0031] Embodiment 3:

[0032] The technical feature that distinguishes Example 3 from Example 1 is: adjustment component 6.

[0033] A hydraulic gate opening and closing machine with a positioning function comprises a cylinder body 1, a piston 2 and a piston rod 3. The piston 2 is arranged in the cylinder body 1. One end of the piston rod 3 extends into the cylinder body 1 and is fixedly connected to the piston 2. A capacitive sensor 4 is adjustably installed on the outer wall of the cylinder body 1. An accommodating cavity is provided on the piston rod 3. A test object 5 for detection by the capacitive sensor 4 is arranged in the accommodating cavity. The test object 5 is used to change the capacitance at its location.

[0034] The adjustment component 6 can also be a screw mechanism, and the capacitive sensor 4 is installed on the nut seat of the screw mechanism. The screw mechanism and the cylinder body 1 are fixedly connected, so that the capacitive sensor 4 is directly installed on the automatic adjustment mechanism, which is convenient for adjustment.

[0035] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hydraulic gate hoist with a positioning function, comprising a cylinder (1), a piston (2) and a piston rod (3), wherein the piston (2) is arranged in the cylinder (1), and one end of the piston rod (3) extends into the cylinder (1) and is fixedly connected to the piston (2), characterized in that: A capacitance sensor (4) is adjustably mounted on the outer wall of the cylinder body (1), and a receiving cavity is provided on the piston rod (3). An object to be detected (5) for detection by the capacitance sensor (4) is arranged in the receiving cavity, and the object to be detected (5) is used to change the capacitance at the location thereof.

2. A hydraulic gate hoist with positioning function as claimed in claim 1, characterized in that: The capacitive sensor (4) and the cylinder body (1) are connected via an adjustment component (6), and the adjustment component (6) is used to enable the capacitive sensor (4) to move axially along the cylinder body (1).

3. A hydraulic gate hoist with positioning function as claimed in claim 2, characterized in that: The adjustment assembly (6) comprises a slide rail (61) and a slider (62) matched with the slide rail (61); the slide rail (61) is fixedly connected to the cylinder body (1); the extension direction of the slide rail (61) is the same as the extension direction of the axis of the cylinder body (1); the slider (62) is slidably connected to the slide rail (61); a groove for accommodating a capacitive sensor (4) is provided on the slider (62); and the capacitive sensor (4) is installed in the groove.

4. A hydraulic gate hoist with positioning function as claimed in claim 3, characterized in that: The adjustment assembly (6) further comprises a locking member, wherein the locking member is threadedly connected to the slider (62). When the slide block (62) is fixed relative to the slide rail (61), the locking member abuts against the slide rail (61).

5. The hydraulic gate hoist with positioning function as claimed in claim 3, characterized in that: A driving assembly (7) is installed on the cylinder body (1), the output end of the driving assembly (7) is drivingly connected to the slider (62), and the driving assembly (7) is used to provide power for the movement of the slider (62).

6. A hydraulic gate hoist with positioning function as claimed in claim 5, characterized in that: The driving assembly (7) comprises an upper mounting plate (71), a driving member (72), a lead screw (73) and a moving seat (74); the upper mounting plate (71) is fixedly connected to the upper portion of the cylinder body (1); the driving member (72) is fixedly connected to the upper mounting plate (71); the output end of the driving member (72) is transmission-connected to the input end of the lead screw (73); the driving member (72) is used to drive the lead screw (73) to rotate; the lead screw (73) and the moving seat (74) are threadedly connected; and the moving seat (74) is fixedly connected to a connecting rod and a slider (62) via a connecting rod.

7. The hydraulic gate hoist with positioning function according to claim 6, characterized in that: The driving assembly (7) further comprises a lower mounting plate (75), wherein the lower mounting plate (75) is fixedly connected to the lower portion of the cylinder body (1), and the output end of the lead screw (73) is rotatably connected to the lower mounting plate (75).

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