Engineering hydraulic oil cylinder with adjustable stroke

Abstract

The invention discloses a stroke-adjustable engineering hydraulic oil cylinder, and relates to the technical field of hydraulic oil cylinders, the stroke-adjustable engineering hydraulic oil cylinder comprises an L-shaped base, a sliding box arranged at the top of the L-shaped base, an oil cylinder main body arranged at the top of the sliding box and a driving assembly arranged in the L-shaped base, and the driving assembly is used for driving the sliding box and the oil cylinder main body to carry out stroke adjustment. A rotating shaft is rotationally arranged in the sliding box, the other end of the rotating shaft rotationally penetrates through the sliding box and is fixedly connected with the bottom of the oil cylinder body, the rotating shaft is fixedly sleeved with a gear, and an electric push rod is fixedly installed on one side of the sliding box. By starting the electric push rod, the driving end of the electric push rod can stretch out and draw back to drive the rack to slide in the sliding box, in the process, the rack can drive the gear to drive the rotating shaft and the oil cylinder body to rotate, the angle of the oil cylinder body can be conveniently adjusted, and therefore the oil cylinder body can conveniently correspond to installation environments with different angles.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, in particular to an engineering hydraulic cylinder with adjustable stroke. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the reduction device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. Hydraulic cylinders are divided into piston type, plunger type, swing type and telescopic type according to the structural type. Among them, piston type hydraulic cylinders are the most widely used. However, in actual use, customers sometimes need the connection distance of the cylinder to be adjustable, and the transmission of the device can be achieved within a certain distance range. Therefore, the transmission distance of the cylinder is required to be variable, and the inside of the cylinder body does not change. Therefore, engineering hydraulic cylinders with adjustable stroke have appeared.

[0003] For example, the existing patent (publication number: CN202811619U) discloses an adjustable stroke engineering hydraulic cylinder. When adjusting the extension, the transmission plate is screwed along the adjustment thread to the outside of the adjustment section, and then the locking nut is tightened to the transmission plate side, and the transmission plate is assembled with the device to be connected; when adjusting the shortening, the locking nut is first screwed to the cylinder body side, and then the transmission plate is moved to the locking nut side, and after corresponding to the position of the device to be connected, the locking nut is tightened to the transmission plate side. By moving the transmission plate on the adjustment section, the needs of different positions of the device to be connected can be met.

[0004] However, the above-designed adjustable stroke engineering hydraulic cylinder still has some disadvantages in actual use: although the adjustable stroke engineering hydraulic cylinder can adjust the stroke of the hydraulic cylinder, the installation of the hydraulic cylinder not only adjusts the stroke, but also encounters some different angles, so that even if the stroke is adjusted, the hydraulic cylinder cannot be effectively installed, so that personnel need to manually reinstall the angle of the hydraulic cylinder on the base, which is not only time-consuming and labor-intensive, but also difficult to adjust.

[0005] Therefore, we designed an engineering hydraulic cylinder with adjustable stroke to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide an engineering hydraulic cylinder with adjustable stroke. By turning on the electric push rod, the driving end of the electric push rod can be extended and retracted to drive the rack to slide in the sliding box. During this process, the rack will drive the gear to drive the rotating shaft and the cylinder body to rotate, so that the angle of the cylinder body can be easily adjusted, thereby making it convenient to make the cylinder body correspond to installation environments with different angles to solve the problems raised in the above-mentioned background technology.

[0007] The cam is an L-shaped base, a bottom end of the L-shaped base having a plurality of springs, a plurality of springs, a plurality of springs having a plurality of springs, a plurality of springs having a plurality of springs, and a plurality of springs having a plurality of springs.

[0008] Furthermore, the driving assembly includes a threaded screw, which is rotatably installed in an L-shaped base, a nut is threadedly sleeved on the threaded screw, a motor is fixedly installed in the L-shaped base, and the driving shaft of the motor is transmission-connected to the threaded screw. During implementation, a connecting block is fixedly installed on the top of the nut, and the other end of the connecting block is fixedly connected to the bottom of the sliding box. When it is necessary to adjust the stroke of the cylinder body, the motor is turned on to rotate the threaded screw, so that the nut drives the connecting block, the rotating shaft and the cylinder body to slide, so that the stroke of the cylinder body can be adjusted to cope with installations at different distances.

[0009] Furthermore, a sliding opening and a sliding cavity are respectively provided on the top and inside of the L-shaped base, the sliding opening and the sliding cavity are communicated with each other, the threaded screw is rotatably installed on one side wall of the sliding cavity, the motor is fixedly installed on the other side wall of the sliding cavity, and the connecting block is slidably inserted in the sliding opening.

[0010] Furthermore, a guide rod is inserted into the nut, and both ends of the guide rod are fixedly installed in the sliding cavity, so that the nut can only slide along the direction in which the guide rod is set, thereby avoiding the problem of nut movement deviation.

[0011] Furthermore, a guide groove is provided in the L-shaped base, and a ball is rotatably provided at the bottom of the nut, and the ball is rollingly connected in the guide groove.

[0012] Furthermore, a placement groove is provided at the bottom of the nut, and the ball is rotatably connected in the placement groove. During the sliding process of the nut, the ball rolls in the guide groove, which can alleviate the pulling force of the nut on the guide rod, thereby avoiding the bending of the guide rod, thereby avoiding the problem of motion interference and improving stability during use.

[0013] Furthermore, two positioning plates are fixedly installed on the front and rear sides of the L-shaped base, and bolts are threaded on the positioning plates, which can facilitate the installation of the L-shaped base in different environments. In addition, the setting of the two positioning plates can facilitate the installation of the L-shaped base on the ground and the wall.

[0014] Furthermore, the number of the bolts is two, and the two bolts are symmetrically threadedly arranged on the positioning plate. The arrangement of the two bolts can further improve the installation stability of the L-shaped base.

[0015] Compared with the prior art, the beneficial effect of the present invention is that by turning on the electric push rod, the driving end of the electric push rod can be extended and retracted to drive the rack to slide in the sliding box. During this process, the rack will drive the gear to drive the rotating shaft and the cylinder body to rotate, so that the angle of the cylinder body can be easily adjusted, thereby making it convenient for the cylinder body to correspond to installation environments with different angles.

[0016] Compared with the prior art, the beneficial effects of the present invention are: by turning on the motor, the threaded screw can be rotated, so that the nut drives the connecting block, the rotating shaft and the cylinder body to slide along the direction set by the guide rod, the stroke of the cylinder body can be adjusted, and installation at different distances can be coped with. In addition, during the sliding process of the nut, the ball will roll in the guide groove, which can alleviate the pulling force of the nut on the guide rod, thereby avoiding the bending of the guide rod, thereby avoiding the problem of motion interference and improving stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall exterior of the present invention;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the inner half-section of the L-shaped base of the present invention;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the inner half-section of the side of the sliding box of the present invention;

[0020] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle.

[0021] In the figure: 1. L-shaped base; 2. sliding box; 3. rotating shaft; 4. cylinder body; 5. gear; 6. electric push rod; 7. rack; 8. threaded screw; 9. nut; 10. motor; 11. connecting block; 12. sliding mouth; 13. sliding cavity; 14. guide rod; 15. guide groove; 16. placement groove; 17. ball; 18. positioning plate; 19. bolt. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is 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 of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-4 The present invention provides a technical solution: an engineering hydraulic cylinder with adjustable stroke, comprising an L-shaped base 1, a sliding box 2 arranged on the top of the L-shaped base 1, a cylinder body 4 arranged on the top of the sliding box 2 and a driving component arranged inside the L-shaped base 1, the driving component is used to drive the sliding box 2 and the cylinder body 4 to adjust the stroke, a rotating shaft 3 is rotatably arranged in the sliding box 2, the other end of the rotating shaft 3 rotates through the sliding box 2 and is fixedly connected to the bottom of the cylinder body 4, a gear 5 is fixedly sleeved on the rotating shaft 3, an electric push rod 6 is fixedly installed on one side of the sliding box 2, the driving end of the electric push rod 6 extends into the sliding box 2 and is fixedly installed with a rack 7, and the rack 7 is meshed and connected with the gear 5.

[0026] During specific implementation, when it is necessary to adjust the angle of the cylinder body 4, first turn on the electric push rod 6, so that the driving end of the electric push rod 6 can be extended and retracted to drive the rack 7 to slide in the sliding box 2. During this process, the rack 7 will drive the gear 5 to drive the rotating shaft 3 and the cylinder body 4 to rotate, so that the angle of the cylinder body 4 can be easily adjusted, thereby making it convenient for the cylinder body 4 to correspond to installation environments with different angles.

[0027] See also Figure 1-4 As shown, the driving assembly includes a threaded screw 8, which is rotatably installed in the L-shaped base 1. A nut 9 is threadedly sleeved on the threaded screw 8. A motor 10 is fixedly installed in the L-shaped base 1. The driving shaft of the motor 10 is transmission-connected to the threaded screw 8. During implementation, a connecting block 11 is fixedly installed on the top of the nut 9, and the other end of the connecting block 11 is fixedly connected to the bottom of the sliding box 2. A sliding opening 12 and a sliding cavity 13 are respectively provided on the top and inside of the L-shaped base 1, and the sliding opening 12 and the sliding cavity 13 are connected. The threaded screw 8 is rotatably installed on one side wall of the sliding cavity 13, the motor 10 is fixedly installed on the other side wall of the sliding cavity 13, and the connecting block 11 is slidably inserted in the sliding opening 12.

[0028] In specific implementation, based on the above implementation, when it is necessary to adjust the stroke of the cylinder body 4, turn on the motor 10 to rotate the threaded screw 8, so that the nut 9 drives the connecting block 11, the rotating shaft 3 and the cylinder body 4 to slide, and the stroke of the cylinder body 4 can be adjusted to cope with installations at different distances.

[0029] See also Figure 1-4 A guide rod 14 is inserted into the nut 9, and both ends of the guide rod 14 are fixedly installed in the sliding cavity 13. The nut 9 can only slide along the direction in which the guide rod 14 is set, avoiding the problem of movement deviation of the nut 9.

[0030] See also Figure 1-4 A guide groove 15 is provided in the L-shaped base 1, a ball 17 is rotatably provided at the bottom of the nut 9, and the ball 17 is rollingly connected in the guide groove 15, and a placement groove 16 is provided at the bottom of the nut 9, and the ball 17 is rotatably connected in the placement groove 16.

[0031] In a specific implementation, based on the above implementation, during the sliding process of the nut 9, the ball 17 will roll in the guide groove 15, which can alleviate the pulling force of the nut 9 on the guide rod 14, thereby avoiding the bending of the guide rod 14, thereby avoiding the problem of motion interference and improving stability during use.

[0032] Two positioning plates 18 are fixedly installed on both the front and rear sides of the L-shaped base 1, and bolts 19 are threadedly inserted on the positioning plates 18. The L-shaped base 1 can be conveniently installed in different environments. In addition, the setting of the two positioning plates 18 can facilitate the L-shaped base 1 to be installed on the ground and the wall.

[0033] The number of the bolts 19 is two, and the two bolts 19 are symmetrically threadedly arranged on the positioning plate 18. The arrangement of the two bolts 19 can further improve the installation stability of the L-shaped base 1.

[0034] In addition, for the rotating shaft 3, since the rotating shaft 3 needs to bear the weight of the cylinder body 4, in order to avoid the rotating shaft 3 from breaking due to excessive pulling force on the rotating shaft 3 by the cylinder body 4 during rotation, we can set the material of the rotating shaft 3 to high carbon steel. Since high carbon steel has greater strength, it can improve the tensile strength of the rotating shaft 3.

[0035] Although the above scheme is relatively complete, it is still not convenient for the mermaid to control the electrical appliances involved inside and outside the L-shaped base 1. At this time, we can install a controller on the L-shaped base 1 in an area that does not hinder its components. By operating the controller, the controller can send electrical signals to the electrical appliances involved inside and outside the L-shaped base 1, which is convenient for controlling the switching and operating status of the electrical appliances. Since the controller is a prior art, it will not be explained in detail in this manual.

[0036] It should be noted that the main body 4 of the oil cylinder, i.e., the energy conversion device for converting hydraulic energy into mechanical energy, is mainly composed of the following parts: cylinder barrel and cylinder head: the cylinder barrel is the main part of the hydraulic oil cylinder, and the cylinder head is used to close one end of the cylinder barrel, piston and piston rod: the piston reciprocates in the cylinder barrel, and the piston rod connects the piston with the external mechanism to transmit force and movement, sealing device: in order to prevent leakage of the working medium, sealing devices are provided between the cylinder barrel and the end cover, the piston and the piston rod, and the piston and the cylinder barrel, buffer device and exhaust device: the buffer device is used to reduce the impact when the piston moves to the two ends of the cylinder barrel, and the exhaust device is used to remove the air in the cylinder barrel, In addition, the hydraulic oil cylinder may also include other parts, such as the piston rod ball joint, buffer valve, etc. These parts work together to enable the hydraulic oil cylinder to achieve reciprocating linear motion and convert hydraulic energy into mechanical energy. Its working principle is: using the incompressible characteristics of liquid, high-pressure liquid (usually oil) is sent into the cylinder through a pump; working process: the liquid pressure drives the piston to move, generating a huge thrust. The larger the diameter of the hydraulic cylinder, the stronger the thrust; Energy conversion: The hydraulic cylinder converts hydraulic energy into mechanical energy to achieve linear reciprocating motion or swinging motion. Since the cylinder body 4 is a prior art, it will not be described in detail in this manual.

[0037] Working principle: When in use, firstly, all the electrical appliances involved in the engineering hydraulic oil cylinder with adjustable stroke are connected to an external power supply, and a battery can be installed on the L-shaped base 1 in an area that does not hinder the operation of other components, and the battery is connected to the electrical circuits involved in the engineering hydraulic oil cylinder with adjustable stroke, so as to supply power to the electrical appliances on the engineering hydraulic oil cylinder with adjustable stroke, thereby ensuring the normal operation of the electrical appliances on the engineering hydraulic oil cylinder with adjustable stroke. Since the power supply structures such as batteries belong to the prior art, no further explanation will be given in this manual;

[0038] When the angle of the oil cylinder body 4 needs to be adjusted, the electric push rod 6 is first turned on, so that the driving end of the electric push rod 6 is extended and retracted to drive the rack 7 to slide in the sliding box 2. During this process, the rack 7 drives the gear 5 to drive the rotating shaft 3 and the oil cylinder body 4 to rotate, so that the angle of the oil cylinder body 4 can be easily adjusted, so that the oil cylinder body 4 can be easily installed in different angles.

[0039] When it is necessary to adjust the stroke of the cylinder body 4, the motor 10 is turned on to rotate the threaded screw 8, so that the nut 9 drives the connecting block 11, the rotating shaft 3 and the cylinder body 4 to slide along the direction set by the guide rod 14. The stroke of the cylinder body 4 can be adjusted to cope with installations at different distances. In addition, during the sliding of the nut 9, the ball 17 will roll in the guide groove 15, which can alleviate the pulling force of the nut 9 on the guide rod 14, thereby avoiding the bending of the guide rod 14, thereby avoiding the problem of motion interference and improving stability during use.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An engineering hydraulic cylinder with adjustable stroke, comprising an L-shaped base (1), a sliding box (2) arranged on the top of the L-shaped base (1), a cylinder body (4) arranged on the top of the sliding box (2), and a driving assembly arranged inside the L-shaped base (1), wherein the driving assembly is used to drive the sliding box (2) and the cylinder body (4) to adjust the stroke, and is characterized in that: A rotating shaft (3) is rotatably arranged in the sliding box (2), the other end of the rotating shaft (3) rotates through the sliding box (2) and is fixedly connected to the bottom of the oil cylinder body (4), a gear (5) is fixedly sleeved on the rotating shaft (3), an electric push rod (6) is fixedly installed on one side of the sliding box (2), the driving end of the electric push rod (6) extends into the sliding box (2) and is fixedly installed with a rack (7), and the rack (7) is meshed with the gear (5).

2. The engineering hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: The driving assembly comprises a threaded screw (8), the threaded screw (8) is rotatably mounted in an L-shaped base (1), a nut (9) is threadedly sleeved on the threaded screw (8), a motor (10) is fixedly mounted in the L-shaped base (1), a driving shaft of the motor (10) is transmission-connected to the threaded screw (8), and during implementation, a connecting block (11) is fixedly mounted on the top of the nut (9), and the other end of the connecting block (11) is fixedly connected to the bottom of the sliding box (2).

3. The engineering hydraulic cylinder with adjustable stroke as claimed in claim 2, characterized in that: The top and the inside of the L-shaped base (1) are respectively provided with a sliding opening (12) and a sliding cavity (13), the sliding opening (12) and the sliding cavity (13) are connected, the threaded screw (8) is rotatably mounted on one side wall of the sliding cavity (13), the motor (10) is fixedly mounted on the other side wall of the sliding cavity (13), and the connecting block (11) is slidably inserted in the sliding opening (12).

4. The engineering hydraulic cylinder with adjustable stroke as claimed in claim 3, characterized in that: A guide rod (14) is inserted into the nut (9), and both ends of the guide rod (14) are fixedly mounted in the sliding cavity (13).

5. The engineering hydraulic cylinder with adjustable stroke as claimed in claim 2, characterized in that: A guide groove (15) is provided in the L-shaped base (1), and a ball (17) is rotatably provided at the bottom of the nut (9), and the ball (17) is rollingly connected in the guide groove (15).

6. The engineering hydraulic cylinder with adjustable stroke as claimed in claim 5, characterized in that: A placement groove (16) is provided at the bottom of the nut (9), and the ball (17) is rotatably connected in the placement groove (16).

7. The engineering hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: Two positioning plates (18) are fixedly mounted on both the front and rear sides of the L-shaped base (1), and bolts (19) are threadedly inserted on the positioning plates (18).

8. The engineering hydraulic cylinder with adjustable stroke according to claim 7, characterized in that: The number of the bolts (19) is two, and the two bolts (19) are symmetrically threadedly arranged on the positioning plate (18).

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