Hydraulic oil cylinder capable of accurately controlling stroke

Abstract

The utility model discloses a hydraulic oil cylinder capable of accurately controlling the stroke, and relates to the technical field of hydraulic oil cylinders, the hydraulic oil cylinder capable of accurately controlling the stroke comprises a hollow shell with an opening at the upper part, a hydraulic oil cylinder body is arranged in the shell, a mounting seat is arranged at the upper end of the hydraulic oil cylinder body, and two moving grooves are formed in the shell; sliding blocks are slidably connected to the interiors of the two moving grooves, connecting rods are fixedly connected to the upper ends of the two sliding blocks, the upper ends of the two connecting rods are fixedly connected with the lower end of the mounting base, two placement grooves are formed in the upper end of the shell, and the two placement grooves communicate with the two moving grooves correspondingly; and the interiors of the two placement grooves are fixedly connected with sliding grooves, and the interiors of the two sliding grooves are slidably connected with connecting blocks, so that the movement of the mounting base can be controlled through a contact type displacement sensor, and the stroke can be accurately controlled in the using process of the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with precise stroke control. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). It features a simple structure and reliable operation. Using it to achieve reciprocating motion eliminates the need for a reduction gear, eliminates transmission backlash, and provides smooth motion. Therefore, it is widely used in the hydraulic systems of various machines. The output force of a hydraulic cylinder is proportional to the effective area of the piston and the pressure differential across it. A hydraulic cylinder essentially consists of a cylinder barrel and head, a piston and piston rod, a sealing device, a buffer, and an exhaust device.

[0003] Currently, when adjusting the stroke of a hydraulic cylinder, a worker generally controls the stroke distance of the hydraulic cylinder by controlling a switch. However, when manually controlling the hydraulic cylinder, the stroke distance cannot be accurately controlled, resulting in errors. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a hydraulic cylinder with precise stroke control, which solves the problem that when adjusting the stroke of the hydraulic cylinder, the general method is for workers to control the stroke distance of the hydraulic cylinder by controlling the switch. However, when the hydraulic cylinder is controlled manually, its stroke distance cannot be accurately controlled, thus causing errors.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a hydraulic cylinder with precise stroke control, comprising a hollow shell with an upper opening, a hydraulic cylinder body is installed inside the shell, and a mounting seat is installed on the upper end of the hydraulic cylinder body, and two movable slots are provided inside the shell, and the interior of the two movable slots are slidably connected with sliding blocks, the upper ends of the two sliding blocks are fixedly connected to the lower ends of the mounting seat, and the upper end of the two connecting rods are fixedly connected to the lower end of the mounting seat. The upper end of the shell is provided with two placement slots, and the two placement slots are respectively connected to the two movable slots, the interiors of the two placement slots are fixedly connected to the sliding slots, the interiors of the two sliding slots are slidably connected with connecting blocks, the two connecting blocks are respectively fixedly connected to the two sliding blocks, and contact displacement sensors are installed inside the two sliding slots, the two contact displacement sensors are respectively slidably connected to the two connecting blocks, and the signal output ends of the two contact displacement sensors are connected to the signal receiving end of the shell.

[0008] Preferably, the lower end of the shell is connected to an oil inlet and outlet, and a cover plate is installed at the lower end of the oil inlet and outlet.

[0009] Preferably, a placement block is fixedly connected to the outer surface of the shell, a mounting groove is provided at the front end of the placement block, a PLC control board is installed inside the mounting groove, and the PLC control board is connected to the shell and two contact displacement sensor signals.

[0010] Preferably, a sealing ring is fixedly connected to the upper end of the shell, and the sealing ring and the mounting seat correspond in position.

[0011] Preferably, the two movable grooves are respectively adapted to the sizes of the two sliding blocks.

[0012] Preferably, the lower end of the shell is fixedly connected to a base, and the interior of the base is rotatably connected to a handle.

[0013] Preferably, a soft pad is fixedly connected to the front end of the placement block.

[0014] Beneficial effects

[0015] The utility model provides a hydraulic cylinder with precise stroke control, which has the following beneficial effects:

[0016] When it is necessary to accurately position the stroke of the shell, the mounting seat installed on the upper end of the shell is fixedly connected to the two sliding blocks through a connecting rod. When the mounting seat moves, the two sliding blocks can be driven to move simultaneously by the connecting rod. Since the sliding block and the connecting block are fixedly connected, and the connecting block moves inside the sliding groove and contacts the contact displacement sensor installed inside the sliding groove, the movement of the mounting seat can be controlled by the contact displacement sensor, so that the stroke of the shell can be accurately controlled during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0020] Figure 4 It is a schematic diagram of the sectional three-dimensional structure of the utility model.

[0021] In the figure: 1. Shell; 2. Mounting seat; 3. Moving groove; 4. Connecting rod; 5. Sliding block; 6. Placement groove; 7. Connecting block; 8. Contact displacement sensor; 9. Oil inlet and outlet; 10. Cover plate; 11. Placement block; 12. Cushion; 13. Mounting groove; 14. PLC control panel; 15. Base; 16. Handle; 17. Sliding groove; 18. Hydraulic cylinder body. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model provides a technical solution: a hydraulic cylinder with precise stroke control, comprising a hollow shell 1 with an upper opening, a hydraulic cylinder body 18 installed inside the shell 1, and a mounting seat 2 installed on the upper end of the hydraulic cylinder body 18, two movable grooves 3 are provided inside the shell 1, and sliding blocks 5 are slidably connected to the interiors of the two movable grooves 3. The upper ends of the two sliding blocks 5 are fixedly connected to the connecting rod 4, and the upper ends of the two connecting rods 4 are fixedly connected to the lower ends of the mounting seat 2. The upper end of the shell 1 is provided with two placement grooves 6, and the two placement grooves 6 are respectively connected to the two movable grooves 3. The interiors of the two placement grooves 6 are fixedly connected to sliding grooves 17, and the interiors of the two sliding grooves 17 are slidably connected to connecting blocks 7. The two connecting blocks 7 are respectively fixedly connected between the two sliding blocks 5, and contact displacement sensors 8 are installed inside the two sliding grooves 17. The two contact displacement sensors 8 are respectively slidably connected to the two connecting blocks 7, and the signal output ends of the two contact displacement sensors 8 are connected to the signal receiving end of the shell 1.

[0024] During operation, when it is necessary to accurately position the stroke of the housing 1, the mounting base 2 installed at the upper end of the housing 1 is fixedly connected to the two sliding blocks 5 through the connecting rod 4. When the mounting base 2 moves, the two sliding blocks 5 can be driven to move simultaneously by the connecting rod 4. Since the sliding blocks 5 are fixedly connected to the connecting block 7, and the connecting block 7 moves inside the sliding groove 17 and contacts the contact displacement sensor 8 installed inside the sliding groove 17, the movement of the mounting base 2 can be controlled by the contact displacement sensor 8, so that the housing 1 can accurately control the stroke during use. The contact displacement sensor 8 is a prior art technology, and its working principle is to use the displacement change when the sensor head contacts the object to be measured for measurement. When the object to be measured is displaced, the sensor head will also move accordingly. The sensitive elements inside the sensor head will be affected by the displacement and produce corresponding signal changes. After these signals are processed by the signal processing circuit, they can be output to the control system for further analysis and processing.

[0025] See also Figure 1-4 The utility model provides a technical solution: the lower end of the shell 1 is connected with an oil inlet and outlet 9, and a cover plate 10 is installed at the lower end of the oil inlet and outlet 9.

[0026] During operation, the oil inlet and outlet ports 9 can be covered and protected by the cover plate 10 .

[0027] See also Figure 1-4 The utility model provides a technical solution: a placement block 11 is fixedly connected to the outer surface of the shell 1, a mounting groove 13 is opened at the front end of the placement block 11, a PLC control board 14 is installed inside the mounting groove 13, and the PLC control board 14 is connected to the shell 1 and the two contact displacement sensors 8 for signal connection.

[0028] During operation, when it is necessary to accurately position the practical stroke of the shell 1, the stroke experienced by the contact displacement sensor 8 can be determined by connecting the shell 1 and the contact displacement sensor 8 to the PLC control board 14 through signals.

[0029] See also Figure 1-4 The utility model provides a technical solution: a sealing ring is fixedly connected to the upper end of the shell 1, and the position of the sealing ring and the mounting seat 2 corresponds to each other.

[0030] During operation, due to the corresponding positions between the mounting base 2 and the sealing ring, when the mounting base 2 is not in use, external dust is blocked by the sealing ring.

[0031] See also Figure 1-4 The utility model provides a technical solution: the two moving grooves 3 are respectively adapted to the sizes of the two sliding blocks 5.

[0032] During operation, the movement of the sliding block 5 can be limited by the size matching between the moving groove 3 and the sliding block 5 .

[0033] See also Figure 1-4 The utility model provides a technical solution: the lower end of the shell 1 is fixedly connected to the base 15, and the inside of the base 15 is rotatably connected to the handle 16.

[0034] During operation, the housing 1 can be moved more conveniently through the base 15 and the handle 16 .

[0035] See also Figure 1-4 The utility model provides a technical solution: the front end of the placement block 11 is fixedly connected with a soft pad 12.

[0036] During operation, the soft pad 12 can protect the block 11 from collision.

[0037] In summary, when it is necessary to accurately position the stroke of the shell 1, the mounting seat 2 installed on the upper end of the shell 1 is fixedly connected to the two sliding blocks 5 through the connecting rod 4. When the mounting seat 2 moves, the two sliding blocks 5 can be driven to move simultaneously through the connecting rod 4. Since the sliding block 5 is fixedly connected to the connecting block 7, and the connecting block 7 moves inside the sliding groove 17 and contacts the contact displacement sensor 8 installed inside the sliding groove 17, the movement of the mounting seat 2 can be controlled by the contact displacement sensor 8, so that the shell 1 can accurately control the stroke during use.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with precise stroke control, comprising a hollow housing (1) with an upper opening, characterized in that: A hydraulic cylinder body (18) is installed inside the housing (1), and a mounting seat (2) is installed on the upper end of the hydraulic cylinder body (18). Two movable grooves (3) are provided inside the housing (1), and sliding blocks (5) are slidably connected inside the two movable grooves (3). The upper ends of the two sliding blocks (5) are fixedly connected to connecting rods (4), and the upper ends of the two connecting rods (4) are fixedly connected to the lower end of the mounting seat (2). Two placement grooves (6) are provided on the upper end of the housing (1), and the two placement grooves (6) are respectively connected to the two movable grooves. (3) are connected, the interiors of the two placement grooves (6) are fixedly connected with sliding grooves (17), the interiors of the two sliding grooves (17) are slidably connected with connecting blocks (7), the two connecting blocks (7) are fixedly connected to the two sliding blocks (5), and the interiors of the two sliding grooves (17) are installed with contact displacement sensors (8), the two contact displacement sensors (8) are slidably connected to the two connecting blocks (7), and the signal output ends of the two contact displacement sensors (8) are connected to the signal receiving end of the housing (1).

2. The hydraulic cylinder with precise stroke control according to claim 1, characterized in that: The lower end of the housing (1) is connected to an oil inlet and outlet (9), and a cover plate (10) is installed at the lower end of the oil inlet and outlet (9).

3. The hydraulic cylinder with precise stroke control according to claim 1, characterized in that: A placement block (11) is fixedly connected to the outer surface of the housing (1), a mounting groove (13) is provided at the front end of the placement block (11), a PLC control board (14) is installed inside the mounting groove (13), and the PLC control board (14) is signal-connected to the housing (1) and two contact displacement sensors (8).

4. The hydraulic cylinder with precise stroke control according to claim 1, characterized in that: A sealing ring is fixedly connected to the upper end of the housing (1), and the sealing ring corresponds to the mounting seat (2) in position.

5. The hydraulic cylinder with precise stroke control according to claim 1, characterized in that: The two movable grooves (3) are respectively adapted to the sizes of the two sliding blocks (5).

6. The hydraulic cylinder with precise stroke control according to claim 1, characterized in that: The lower end of the housing (1) is fixedly connected to a base (15), and the interior of the base (15) is rotatably connected to a handle (16).

7. The hydraulic cylinder with precise stroke control according to claim 3, characterized in that: The front end of the placement block (11) is fixedly connected with a soft pad (12).

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