Telescopic cylinder with displacement sensor

Abstract

The invention discloses a telescopic cylinder with a displacement sensor, and aims to solve the technical problems that a current displacement sensor is not convenient enough to install, occupies more installation space and cannot meet the requirement for miniaturization of equipment. The telescopic cylinder structurally comprises a plurality of telescopic cylinder main bodies which are divided into a first-stage telescopic cylinder and a second-stage telescopic cylinder; the exterior of the first-stage telescopic cylinder is connected with a first track plate through a first connecting base, one end of the second-stage telescopic cylinder is connected with a second track plate through a second connecting base, and the first track plate and the second track plate are connected with threaded rods through rotary knobs. The displacement sensor is additionally arranged on the outer side of each telescopic cylinder body, during use, each displacement sensor can be used for each stage of telescopic cylinder body, a long single displacement sensor does not need to be designed to measure the stroke of the telescopic cylinder, measurement is separated, and therefore the installation space can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of telescopic cylinders, in particular to a telescopic cylinder with a displacement sensor. Background Art

[0002] The telescopic cylinder is a device that can be freely extended and retracted. It converts hydraulic energy into mechanical energy by using the hydraulic principle to achieve the telescopic movement of the component. Its main structure includes key parts such as the cylinder body, piston, piston rod, seal and hydraulic connection port. When the hydraulic oil enters the cylinder, the pressure of the oil pushes the piston to extend outward, thereby driving the piston rod to perform telescopic movement; when the oil flows back, the piston will automatically shrink to achieve the retraction of the cylinder.

[0003] At present, in order to achieve high-precision measurement of the stroke, the telescopic cylinder needs to add a displacement sensor to the cylinder body. However, since the length of the displacement sensor is longer than the length of the telescopic cylinder, it will occupy more installation space during installation and cannot meet the needs of equipment miniaturization. In addition, the displacement sensor is generally fixed with traditional bolts, which slows down the speed of the operator when disassembling and assembling the displacement sensor, thereby reducing the convenience of the displacement sensor when disassembling and assembling. Therefore, a new technical solution needs to be designed to solve this problem. Summary of the invention

[0004] The purpose of the present invention is to provide a telescopic cylinder with a displacement sensor to solve the technical problems that the current displacement sensor is not convenient enough during installation, occupies more installation space, and cannot meet the requirements of equipment miniaturization.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a telescopic cylinder with a displacement sensor, comprising a plurality of telescopic cylinder bodies, the telescopic cylinder bodies being divided into a first-stage telescopic cylinder and a second-stage telescopic cylinder, the outside of the first-stage telescopic cylinder being connected to a first track plate via a first connecting seat, one end of the second-stage telescopic cylinder being connected to a second track plate via a second connecting seat, the first track plate and the second track plate being both connected to threaded rods via knobs, the outside of the threaded rods being connected to a displacement sensor via a clamping seat, the other end of the second-stage telescopic cylinder being slidably connected to an inner wall of the first-stage telescopic cylinder via a first piston seal, the inside of the second-stage telescopic cylinder being connected to a piston rod via a second piston seal, and the other end of the piston rod being installed with a third connecting seat.

[0006] As a preferred embodiment of the present invention, the displacement sensor is a resistive linear displacement sensor or an inductive linear displacement sensor.

[0007] As a preferred embodiment of the present invention, one end of the first connecting seat is fixedly connected to the outer side surface of one end of the first-stage telescopic cylinder, one end of the first track plate is fixedly connected to one side of the first connecting seat, and the bottom of the first track plate is fixedly connected to the outer side surface of the first-stage telescopic cylinder.

[0008] As a preferred embodiment of the present invention, both ends of the threaded rod are rotatably connected inside the first track plate and the second track plate, one end of the knob passes through one end of the first track plate and the second track plate, and is fixedly connected to one end of the threaded rod.

[0009] As a preferred embodiment of the present invention, one end of the clamping seat is slidably connected inside the first track plate and the second track plate, and is connected to the toothed portion of the threaded rod through a thread.

[0010] As a preferred embodiment of the present invention, one end of the displacement sensor is inserted into the interior of the first connecting seat, the other end of the displacement sensor is inserted into the interior of a clamping seat, and the telescopic end of the displacement sensor passes through the interior of the clamping seat and is fixedly connected to one end of the second connecting seat.

[0011] As a preferred embodiment of the present invention, one end of another displacement sensor is inserted into the inside of another clamping seat, the other end of another displacement sensor is inserted into the inside of the other end of the second track plate, one end of the second track plate is fixedly connected to the other end of the second connecting seat, and is slidably connected to the outer side surface of the first-stage telescopic cylinder, the telescopic end of another displacement sensor is fixedly connected to one end of the third connecting seat, and the other end of the third connecting seat is fixedly connected to the other end of the piston rod.

[0012] As a preferred embodiment of the present invention, one end of the piston rod extends to the interior of the second-stage telescopic cylinder and is fixedly connected to the center of the second piston seal. The outer diameter of the second piston seal matches the inner diameter of the second-stage telescopic cylinder and is slidably connected to its inner wall.

[0013] As a preferred embodiment of the present invention, one end of the second-stage telescopic cylinder extends to the interior of the first-stage telescopic cylinder and is fixedly connected to the center of the first piston seal. The outer diameter of the first piston seal matches the inner diameter of the first-stage telescopic cylinder and is slidably connected to its inner wall.

[0014] As a preferred embodiment of the present invention, two adjacent displacement sensors are respectively located on two sides of the telescopic cylinder body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adds a displacement sensor on the outside of each telescopic cylinder body. When in use, each displacement sensor can be used for each stage of the telescopic cylinder body. There is no need to design a very long single displacement sensor to measure the stroke of the telescopic cylinder. Instead, the displacement sensors are measured separately, thereby effectively reducing the installation space. At the same time, the guide rail of the displacement sensor itself can be shared with the telescopic cylinder bodies, which can not only provide telescopic stability and reduce shaking, but also further save installation space.

[0016] 2. When installing and fixing the displacement sensor of the device of the present invention, first place the two displacement sensors on the first track plate and the second track plate respectively, and then turn the knob so that the knob drives the clamping seat to move through the threaded rod. At this time, the clamping seat clamps and fixes the displacement sensor. During this process, one end of one displacement sensor is inserted into the interior of the first connecting seat, and one end of the other displacement sensor is inserted into the interior of the other end of the second track plate, avoiding traditional bolt fixing, speeding up the operator's disassembly and assembly of the displacement sensor, thereby improving the convenience of the displacement sensor during disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A bottom view of the present invention; Figure 3 is a cross-sectional view of the present invention; In the figure: 1, first-stage telescopic cylinder; 11, second-stage telescopic cylinder; 12, first connecting seat; 13, first track plate; 14, second connecting seat; 15, second track plate; 16, knob; 17, threaded rod; 18, clamping seat; 19, displacement sensor; 20. First piston seal; 21. Second piston seal; 22. Piston rod; 23. Third connecting seat. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Embodiment 1: A telescopic cylinder with a displacement sensor 19, see Figures 1 to 3 , including a plurality of telescopic cylinder bodies, the piston rod 22 of the telescopic cylinder body is connected to the cylinder body of the adjacent telescopic cylinder body, and the plurality of telescopic cylinder bodies are connected in sequence, and the cylinder body sizes are successively reduced, and the cylinder bodies of the plurality of telescopic cylinder bodies are all installed with displacement sensors 19 on the outside, the fixed part of the displacement sensor 19 is installed on the outside of the corresponding cylinder body, and the movable part of the displacement sensor 19 is installed on the outside of the cylinder body of the adjacent telescopic cylinder body; The main body of the telescopic cylinder can be an oil cylinder or a gas cylinder; The telescopic cylinder body is divided into a first-stage telescopic cylinder 1 and a second-stage telescopic cylinder 11. The other end of the second-stage telescopic cylinder 11 is slidably connected to the inner wall of the first-stage telescopic cylinder 1 through a first piston seal 20. The interior of the second-stage telescopic cylinder 11 is connected to a piston rod 22 through a second piston seal 21. One end of the piston rod 22 extends to the interior of the second-stage telescopic cylinder 11 and is fixedly connected to the center of the second piston seal 21. The outer diameter of the second piston seal 21 matches the inner diameter of the second-stage telescopic cylinder 11 and is slidably connected to its inner wall. One end of the second-stage telescopic cylinder 11 extends to the interior of the first-stage telescopic cylinder 1 and is fixedly connected to the center of the first piston seal 20. The outer diameter of the first piston seal 20 matches the inner diameter of the first-stage telescopic cylinder 1 and is slidably connected to its inner wall.

[0021] When the device is in use, each displacement sensor 19 can be used for each stage of the telescopic cylinder body. There is no need to design a very long single displacement sensor 19 to measure the stroke of the telescopic cylinder. Instead, the displacement sensors 19 can be measured separately, thereby effectively reducing the installation space. At the same time, the guide rails of the displacement sensor 19 itself can be shared for telescopic movement between the telescopic cylinder bodies, which can not only provide telescopic stability and reduce shaking, but also further save installation space.

[0022] The outside of the first-stage telescopic cylinder 1 is connected to a first track plate 13 through a first connecting seat 12, one end of the first connecting seat 12 is fixedly connected to the outer side surface of one end of the first-stage telescopic cylinder 1, one end of the first track plate 13 is fixedly connected to one side of the first connecting seat 12, the bottom of the first track plate 13 is fixedly connected to the outer side surface of the first-stage telescopic cylinder 1, one end of the second-stage telescopic cylinder 11 is connected to a second track plate 15 through a second connecting seat 14, when the second-stage telescopic cylinder 11 is moved out of the first-stage telescopic cylinder 1, the second-stage telescopic cylinder 11 will drive the second track plate 15 to slide outside the first-stage telescopic cylinder 1, and the displacement sensor 19 is also connected through the first connecting seat 12, the second connecting seat 14 and the third connecting seat 23 respectively, so as to achieve the limitation of the components of the telescopic cylinder when telescoping, and further improve the stability of the telescopic cylinder when telescoping; The first track plate 13 and the second track plate 15 are both connected with a threaded rod 17 through a knob 16, and the outside of the threaded rod 17 is connected with a displacement sensor 19 through a clamping seat 18. The other end of the piston rod 22 is installed with a third connecting seat 23. The two ends of the threaded rod 17 are rotatably connected to the inside of the first track plate 13 and the second track plate 15. One end of the knob 16 passes through one end of the first track plate 13 and the second track plate 15 and is fixedly connected to one end of the threaded rod 17. One end of the clamping seat 18 is slidably connected to the inside of the first track plate 13 and the second track plate 15, and is connected to the toothed portion of the threaded rod 17 through a thread. One end of a displacement sensor 19 is inserted into the inside of the first connecting seat 12 The other end of a displacement sensor 19 is inserted into the interior of a clamping seat 18, the telescopic end of a displacement sensor 19 passes through the interior of the clamping seat 18 and is fixedly connected to one end of the second connecting seat 14, one end of another displacement sensor 19 is inserted into the interior of another clamping seat 18, the other end of another displacement sensor 19 is inserted into the interior of the other end of the second track plate 15, one end of the second track plate 15 is fixedly connected to the other end of the second connecting seat 14, and is slidably connected to the outer side surface of the first-stage telescopic cylinder 1, the telescopic end of another displacement sensor 19 is fixedly connected to one end of the third connecting seat 23, and the other end of the third connecting seat 23 is fixedly connected to the other end of the piston rod 22.

[0023] When installing and fixing the displacement sensor 19 of the present device, firstly, the two displacement sensors 19 are placed on the first track plate 13 and the second track plate 15 respectively, and then the knob 16 is turned so that the knob 16 drives the clamping seat 18 to move through the threaded rod 17. At this time, the clamping seat 18 clamps and fixes the displacement sensor 19. During this process, one end of one displacement sensor 19 is inserted into the interior of the first connecting seat 12, and one end of the other displacement sensor 19 is inserted into the interior of the other end of the second track plate 15, avoiding traditional bolt fixing, speeding up the speed of the operator in disassembling and assembling the displacement sensor 19, thereby improving the convenience of the displacement sensor 19 during disassembly and assembly.

[0024] In this embodiment, the displacement sensor 19 adopts a resistive linear displacement sensor 19 or an inductive linear displacement sensor 19. Both of the above displacement sensors 19 have their own rails that can act on the extension and retraction of the telescopic cylinder body, thereby saving installation space.

[0025] In the embodiment, two adjacent displacement sensors 19 are respectively located on both sides of the telescopic cylinder body. This method is beneficial to saving installation space when a multi-stage telescopic cylinder body is arranged.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A telescopic cylinder with a displacement sensor, comprising a plurality of telescopic cylinder bodies, characterized in that: The telescopic cylinder body is divided into a first-stage telescopic cylinder (1) and a second-stage telescopic cylinder (11). The first-stage telescopic cylinder (1) is externally connected to a first track plate (13) via a first connecting seat (12). One end of the second-stage telescopic cylinder (11) is connected to a second track plate (15) via a second connecting seat (14). The first track plate (13) and the second track plate (15) are both connected to a threaded rod (17) via a knob (16). The threaded rod (17) is externally connected to a displacement sensor (19) via a clamping seat (18). The other end of the second-stage telescopic cylinder (11) is slidably connected to the inner wall of the first-stage telescopic cylinder (1) via a first piston seal (20). The interior of the second-stage telescopic cylinder (11) is connected to a piston rod (22) via a second piston seal (21). The other end of the piston rod (22) is mounted with a third connecting seat (23).

2. A telescopic cylinder with a displacement sensor according to claim 1, characterized in that: The displacement sensor (19) is a resistive linear displacement sensor (19) or an inductive linear displacement sensor (19).

3. A telescopic cylinder with a displacement sensor according to claim 1, characterized in that: One end of the first connection seat (12) is fixedly connected to the outer side surface of one end of the first-stage telescopic cylinder (1), one end of the first track plate (13) is fixedly connected to one side of the first connection seat (12), and the bottom of the first track plate (13) is fixedly connected to the outer side surface of the first-stage telescopic cylinder (1).

4. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: Both ends of the threaded rod (17) are rotatably connected inside the first track plate (13) and the second track plate (15), and one end of the knob (16) passes through one end of the first track plate (13) and the second track plate (15) and is fixedly connected to one end of the threaded rod (17).

5. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: One end of the clamping seat (18) is slidably connected inside the first track plate (13) and the second track plate (15), and is connected to the toothed portion of the threaded rod (17) via a thread.

6. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: One end of the displacement sensor (19) is plugged into the interior of the first connecting seat (12), the other end of the displacement sensor (19) is plugged into the interior of a clamping seat (18), and the telescopic end of the displacement sensor (19) passes through the interior of the clamping seat (18) and is fixedly connected to one end of the second connecting seat (14).

7. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: One end of another displacement sensor (19) is plugged into the interior of another clamping seat (18), and the other end of another displacement sensor (19) is plugged into the interior of the other end of the second track plate (15). One end of the second track plate (15) is fixedly connected to the other end of the second connecting seat (14) and is slidably connected to the outer side surface of the first-stage telescopic cylinder (1). The telescopic end of another displacement sensor (19) is fixedly connected to one end of the third connecting seat (23), and the other end of the third connecting seat (23) is fixedly connected to the other end of the piston rod (22).

8. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: One end of the piston rod (22) extends into the interior of the second-stage telescopic cylinder (11) and is fixedly connected to the center of the second piston seal (21); the outer diameter of the second piston seal (21) matches the inner diameter of the second-stage telescopic cylinder (11) and is slidably connected to the inner wall thereof.

9. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: One end of the second-stage telescopic cylinder (11) extends into the interior of the first-stage telescopic cylinder (1) and is fixedly connected to the center of the first piston seal (20); the outer diameter of the first piston seal (20) matches the inner diameter of the first-stage telescopic cylinder (1) and is slidably connected to the inner wall thereof.

10. The telescopic cylinder with a displacement sensor according to claim 1, characterized in that: Two adjacent displacement sensors (19) are respectively located on two sides of the telescopic cylinder body.

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