Hydraulic cylinder controlled using pulse technique

Abstract

The application discloses a hydraulic cylinder controlled by pulse technology and relates to the technical field of hydraulic cylinders.The hydraulic cylinder controlled by pulse technology comprises a cylinder mechanism, a self-locking mechanism, a cleaning mechanism and a buffer mechanism are arranged on the cylinder mechanism, the cylinder mechanism comprises a first cylinder cover, a cylinder barrel fixedly connected to the first cylinder cover, a second cylinder cover fixedly connected to one end of the cylinder barrel and a guide rod fixedly connected to the first cylinder cover.The limiting rod, the limiting groove and the guide rod structure are arranged, the piston rod can be effectively locked when the piston rod moves, even if hydraulic oil leaks, "negative pressure effect" and "soft leg phenomenon" do not occur, the extruding block, the first conductive head and the cleaning ring are arranged, the two cleaning rings are spliced into a ring shape during the unlocking process of the piston rod, the piston rod is coated, dust, chippings and other impurities adhered to the outer surface of the piston rod are scraped off when the piston rod moves.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder technology, specifically to a hydraulic cylinder controlled using pulse technology. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy to perform linear reciprocating motion (or oscillating motion). Hydraulic cylinders controlled by pulse technology primarily utilize electrical pulse technology to control the pump body, thereby controlling the flow of hydraulic oil into the rod-side or rodless internal cavity to achieve the reciprocating motion of the piston rod. This smooth motion makes them widely used in the hydraulic systems of various machines. A hydraulic cylinder basically consists of a cylinder barrel, cylinder head, piston, and piston rod. Currently, hydraulic cylinders mainly rely on sealing pressurized oil to lock them. However, pressurized oil is prone to leakage, resulting in a "negative pressure effect" and a "soft leg phenomenon." Although many improved products have been developed, these problems have not been fundamentally solved. When the hydraulic lock is held in a certain position for a long time, the accuracy often fails to meet requirements due to pressurized oil leakage and other issues. In the event of an oil circuit failure, accuracy and reliability are even more compromised. Therefore, we propose a hydraulic cylinder controlled by pulse technology. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic cylinder controlled by pulse technology, which can effectively lock the piston rod.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic cylinder controlled by pulse technology, comprising a cylinder body mechanism, wherein the cylinder body mechanism is provided with a self-locking mechanism, a cleaning mechanism, and a buffer mechanism;

[0005] The cylinder block mechanism includes a first cylinder head, a cylinder barrel fixedly connected to the first cylinder head, a second cylinder head fixedly connected to one end of the cylinder barrel, a guide rod fixedly connected to the first cylinder head, a piston plate slidably connected to the guide rod, a piston rod fixedly connected to the side wall of the piston plate, a first oil inlet pipe fixedly connected to the side wall of the cylinder barrel, and a second oil inlet pipe fixedly connected to the side wall of the cylinder barrel.

[0006] The self-locking mechanism includes a first receiving cavity opened inside the piston, a flow channel opened on the side wall of the first receiving cavity, a first elastic member fixedly connected inside the first receiving cavity, a limiting rod fixedly connected to one end of the first elastic member, and a limiting groove opened on the side wall of the guide rod.

[0007] The cleaning mechanism includes a second receiving cavity formed on the side wall of the second cylinder head, a squeezing block slidably connected inside the second receiving cavity, a groove formed on the side wall of the squeezing block, a first conductive head fixedly connected to the side wall of the squeezing block, a second conductive head fixedly connected to the side wall of the second receiving cavity, a second elastic element fixedly connected to the side wall of the squeezing block, an electric telescopic rod fixedly connected to the outer surface of the second cylinder head, and a cleaning ring fixedly connected to the output end of the electric telescopic rod.

[0008] The buffer mechanism includes a support fixedly connected to the side wall of the first cylinder head, a third receiving cavity formed on the side wall of the support, a third elastic member fixedly connected to the side wall of the third receiving cavity, and a buffer block slidably connected inside the third receiving cavity.

[0009] Furthermore, both the first cylinder head and the second cylinder head are provided with sealing gaskets between themselves and the cylinder barrel.

[0010] Furthermore, the piston rod has a guide groove inside that is adapted to the guide rod.

[0011] Furthermore, the piston plate and the cylinder are mutually adapted.

[0012] Furthermore, one end of the limiting rod is fixedly connected to a sliding plate, and the sliding plate is adapted to the first receiving cavity.

[0013] Furthermore, one end of the first elastic member is fixedly connected to the slide plate, and the other end is fixedly connected to the side wall of the first receiving cavity.

[0014] Furthermore, the first conductive head, the second conductive head, and the electric telescopic rod are all electrically connected.

[0015] Furthermore, one end of the second elastic member is fixedly connected to the side wall of the second receiving cavity, and the other end is fixedly connected to the side wall of the extrusion block.

[0016] Furthermore, the cleaning ring is semi-circular in shape, with a locking block fixedly connected to one end and a locking groove opened at the other end.

[0017] Furthermore, one end of the third elastic element is fixedly connected to the inner wall of the third receiving cavity, and the other end is fixedly connected to the side wall of the buffer block.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. The present invention, through the cooperation of the limiting rod, limiting groove, guide rod, first elastic element and other structures, can effectively lock the piston rod when it moves, so that even if the hydraulic oil leaks, there will be no "negative pressure effect" or "weak leg phenomenon".

[0020] 2. Through the cooperation of the extrusion block, the first conductive head, the second conductive head, the cleaning ring, and other structures, the present invention enables the two cleaning rings to be spliced ​​into a ring shape during the unlocking process of the piston rod, thereby covering the piston rod and scraping off the dust, debris, and other impurities adhering to its outer surface when the piston rod moves.

[0021] 3. The present invention uses the cooperation of the buffer block, support seat, third elastic element and other structures to buffer the piston plate and piston rod, so as to avoid them colliding with the first cylinder head and affecting the service life.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] Figure 1 This is a cross-sectional schematic diagram of the present invention in its elongated state;

[0024] Figure 2 This is a cross-sectional schematic diagram of the invention in its contracted state;

[0025] Figure 3 This is a cross-sectional schematic diagram of the overall structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0027] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B;

[0028] Figure 6 This is a three-dimensional schematic diagram of the cleaning ring structure of the present invention.

[0029] Figure label:

[0030] 100. Cylinder block mechanism; 101. First cylinder head; 102. Cylinder barrel; 103. Second end cover; 104. Guide rod; 105. Piston plate; 106. Piston rod; 107. First oil inlet pipe; 108. Second oil inlet pipe; 109. Guide groove;

[0031] 200. Self-locking mechanism; 201. First receiving cavity; 202. Flow guide channel; 203. First elastic element; 204. Limiting rod; 205. Limiting groove; 206. Slide plate;

[0032] 300. Cleaning mechanism; 301. Second receiving cavity; 302. Extrusion block; 303. Groove; 304. First conductive head; 305. Second conductive head; 306. Second elastic element; 307. Electric telescopic rod; 308. Cleaning ring; 309. Locking block; 310. Locking slot;

[0033] 400, Buffer mechanism; 401, Support base; 402, Third receiving cavity; 403, Third elastic element; 404, Buffer block. Detailed Implementation

[0034] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0035] Please see Figure 1-5 This invention provides a technical solution: a hydraulic cylinder controlled by pulse technology, including a cylinder body mechanism 100. The cylinder body mechanism 100 is provided with a self-locking mechanism 200, a cleaning mechanism 300, and a buffer mechanism 400. The cylinder body structure is mainly used to conventionally drive the hydraulic cylinder to extend or retract. The self-locking mechanism 200 can lock the working position of the piston rod 106 during operation. The cleaning mechanism 300 can clean the dust, debris, and other impurities adhering to the surface of the piston rod 106 when it retracts, preventing impurities from accumulating on the piston rod 106. The buffer mechanism 400 can buffer the piston rod 106 when it retracts, preventing collision between the piston plate 105 and the first cylinder head 101, which would affect the service life.

[0036] It should be noted that pulse technology refers to the techniques of pulse signal generation and waveform transformation. It refers to voltage or current that changes abruptly within a certain time frame. In a broader sense... Figure 1 The non-sinusoidal wave signals shown, such as rectangular waves, square waves, spike waves, sawtooth waves, triangular waves, and stepped waves, are all pulse signals. The cylinder mechanism is connected to pulses externally.

[0037] A pulse controller and a pump body are connected to the cylinder body mechanism 100. The pump body is connected to the oil supply pipeline of the hydraulic cylinder. When the pulse controller transmits a pulse signal to the pump body, the hydraulic oil in the first oil inlet pipe 107 and the second oil inlet pipe 108 can be controlled to enter, so that the piston rod 106 extends or retracts.

[0038] The cylinder block mechanism 100 includes a first cylinder head 101, a cylinder 102 fixedly connected to the first cylinder head 101, a second cylinder head 103 fixedly connected to one end of the cylinder 102, a guide rod 104 fixedly connected to the first cylinder head 101, a piston plate 105 slidably connected to the guide rod 104, a piston rod 106 fixedly connected to the side wall of the piston plate 105, a first oil inlet pipe 107 fixedly connected to the side wall of the cylinder 102, and a second oil inlet pipe 108 fixedly connected to the side wall of the cylinder 102.

[0039] It should be noted that sealing gaskets are provided between the first cylinder head 101 and the second cylinder head 103 and the cylinder barrel 102 to enhance the sealing performance between the first cylinder head 101, the second cylinder head 103 and the cylinder barrel 102, and to prevent hydraulic oil leakage.

[0040] Furthermore, the piston rod 106 has a guide groove 109 inside that matches the guide rod 104. The guide rod 104 and the guide groove 109 facilitate the movement of the piston rod 106 when it extends or retracts.

[0041] In addition, the piston plate 105 and the cylinder 102 are adapted to each other. When the piston plate 105 moves in the cylinder 102, it can maintain a good seal with the side wall of the cylinder 102, preventing the hydraulic oil on the left side of the piston plate 105 from flowing with the hydraulic oil on the right side, which would affect the extension and retraction of the piston rod 106.

[0042] Specifically, such as Figure 1 As shown, by introducing hydraulic oil into the first oil inlet pipe 107, the hydraulic oil will squeeze the piston plate 105 to the right, at which time the piston rod 106 will extend out of the cylinder 102; when it is necessary to retract the piston rod 106, hydraulic oil is introduced into the second oil inlet pipe 108, at which time the hydraulic oil on the right side of the piston plate 105 will squeeze the piston plate 105, and the hydraulic oil on the left side of the piston plate 105 will be discharged through the first oil inlet pipe 107, at which time the piston rod 106 will move to the left and retract.

[0043] The self-locking mechanism 200 includes a first receiving cavity 201 inside the piston, a flow channel 202 on the side wall of the first receiving cavity 201, a first elastic member 203 fixedly connected inside the first receiving cavity 201, a limiting rod 204 fixedly connected to one end of the first elastic member 203, and a limiting groove 205 on the side wall of the guide rod 104.

[0044] It should be noted that one end of the limiting rod 204 is fixedly connected to the slide plate 206, and the slide plate 206 is compatible with the first receiving cavity 201. The slide plate 206 and the first receiving cavity 201 have good sealing performance, which can prevent hydraulic oil from passing through. When the hydraulic oil squeezes the slide plate 206, the slide plate 206 will slide in the first receiving cavity 201 and drive the limiting rod 204 to slide.

[0045] Furthermore, one end of the first elastic element 203 is fixedly connected to the slide plate 206, and the other end is fixedly connected to the side wall of the first receiving cavity 201. The first elastic element 203 can be used to drive the slide plate 206 to reset.

[0046] Furthermore, such as Figure 3As shown, the limiting groove 205 is triangular in shape. The limiting rod 204 and the limiting groove 205 are mutually adapted. When the piston rod 106 extends, the piston plate 105 will drive the limiting rod 204 to move. At this time, the limiting groove 205 will squeeze the limiting rod 204, and the limiting rod 204 will retract upward, so as not to block the movement of the piston rod 106. When the piston rod 106 retracts, since the limiting rod 204 and the limiting groove 205 are tightly engaged, the limiting groove 205 will block the limiting rod 204, so that the piston rod 106 is fixed in the current position.

[0047] Specifically, when the piston rod 106 extends, the piston plate 105 drives the limiting rod 204 and the piston rod 106 to move. At this time, the limiting groove 205 will squeeze the limiting rod 204, causing the limiting rod 204 to retract upwards. When it moves to the appropriate position, the limiting rod 204 will re-engage in the limiting groove 205, locking the current position of the piston rod 106. When the piston rod 106 retracts, as... Figure 4 As shown, hydraulic oil is introduced into the second oil inlet pipe 108, causing it to squeeze the piston plate 105 to move. At this time, the hydraulic oil enters the first receiving cavity 201 through the guide channel 202 and squeezes the slide plate 206, thereby causing the slide plate 206 to squeeze the first elastic element 203 and drive the limiting rod 204 to move upward, thereby causing the limiting rod 204 to disengage from the limiting groove 205, thus unlocking the piston rod 106 and causing the piston rod 106 to retract.

[0048] The cleaning mechanism 300 includes a second receiving cavity 301 formed on the side wall of the second cylinder head 103, a pressing block 302 slidably connected inside the second receiving cavity 301, a groove 303 formed on the side wall of the pressing block 302, a first conductive head 304 fixedly connected to the side wall of the pressing block 302, a second conductive head 305 fixedly connected to the side wall of the second receiving cavity 301, a second elastic member 306 fixedly connected to the side wall of the pressing block 302 (one end of the second elastic member 306 is fixedly connected to the side wall of the second receiving cavity 301, and the other end is fixedly connected to the side wall of the pressing block 302, and the second elastic member 306 facilitates the resetting of the pressing block 302), an electric telescopic rod 307 fixedly connected to the outer surface of the second cylinder head 103, and a cleaning ring 308 fixedly connected to the output end of the electric telescopic rod 307.

[0049] It should be noted that, as Figure 5As shown, the electric telescopic rod 307 is powered by an external power source. The first conductive head 304, the second conductive head 305, and the electric telescopic rod 307 are all electrically connected. When the first conductive head 304 and the second conductive head 305 come into contact, a closed circuit is formed, which triggers the electric telescopic rod 307 to extend. When the first conductive head 304 and the second conductive head 305 separate, the electric telescopic rod 307 retracts.

[0050] Furthermore, such as Figure 6 As shown, the cleaning ring 308 is a semi-circular ring. One end of the cleaning ring 308 is fixedly connected to a locking block 309, and the other end is provided with a locking groove 310. There are two cleaning rings 308. When the locking blocks 309 on the two cleaning rings 308 are engaged in the corresponding locking grooves 310, the two cleaning rings 308 can be spliced ​​into a ring shape to cover the piston rod 106, thereby scraping off the dust, debris and other impurities adhering to its outer surface when the piston rod 106 moves.

[0051] Specifically, during the retraction of the piston rod 106, the hydraulic oil flowing through the second oil inlet pipe 108 also squeezes the extrusion block 302. At this time, the extrusion block 302 squeezes the second elastic element 306 and drives the first conductive head 304 to contact the second conductive head 305, thereby causing the electric telescopic rod 307 to start extending and drive the two cleaning rings 308 to cover the piston rod 106. This facilitates the cleaning of dust and debris adhering to the surface of the piston rod 106 when it retracts, preventing dust from accumulating on the piston rod 106 for a long time and affecting its service life.

[0052] The buffer mechanism 400 includes a support 401 fixedly connected to the side wall of the first cylinder head 101, a third receiving cavity 402 opened on the side wall of the support 401, and a third elastic member 403 fixedly connected to the side wall of the third receiving cavity 402. One end of the third elastic member 403 is fixedly connected to the inner wall of the third receiving cavity 402, and the other end is fixedly connected to the side wall of the buffer block 404. The third elastic member 403 can drive the buffer block 404 to reset and slide inside the third receiving cavity 402.

[0053] Specifically, when the piston rod 106 retracts, the piston plate 105 will first come into contact with the buffer block 404, causing the buffer block 404 to move within the support seat 401 and cooperate with the third elastic element 403 to buffer the piston plate 105 and piston rod 106, preventing them from colliding with the first cylinder head 101 and affecting their service life.

[0054] The operating principle or process of this invention is as follows: When the piston rod 106 needs to extend, hydraulic oil is first introduced into the first oil inlet pipe 107. The hydraulic oil will push the piston plate 105 to the right, and the piston plate 105 will drive the limiting rod 204 and the piston rod 106 to move. At this time, the limiting groove 205 will squeeze the limiting rod 204, and the limiting rod 204 will retract upward. When it moves to the appropriate position, the limiting rod 204 will re-enter the limiting groove 205, locking the current position of the piston rod 106. When the piston rod 106 retracts, as... Figure 4 As shown, hydraulic oil is introduced into the second oil inlet pipe 108, causing it to compress the piston plate 105. At this time, the hydraulic oil enters the first receiving cavity 201 through the guide channel 202 and compresses the sliding plate 206, causing the sliding plate 206 to compress the first elastic element 203 and drive the limiting rod 204 upward, thus disengaging the limiting rod 204 from the limiting groove 205. This unlocks the piston rod 106, causing it to retract. During the retraction of the piston rod 106, the hydraulic oil introduced into the second oil inlet pipe 108 also compresses the extrusion block 302. The pressure block 302 will squeeze the second elastic element 306 and cause the first conductive head 304 to come into contact with the second conductive head 305, thereby causing the electric telescopic rod 307 to extend. This will cause the two cleaning rings 308 to cover the piston rod 106 and clean the dust and debris adhering to its surface. At the same time, when the piston rod 106 retracts, the piston plate 105 will first come into contact with the buffer block 404, causing the buffer block 404 to move within the support seat 401 and cooperate with the third elastic element 403 to buffer the piston plate 105 and piston rod 106, preventing them from colliding with the first cylinder head 101.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances. When an element is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another element, it may be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0058] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A hydraulic cylinder controlled using pulse technology, comprising a cylinder body mechanism (100), characterized in that, The cylinder block mechanism (100) is provided with a self-locking mechanism (200), a cleaning mechanism (300), and a buffer mechanism (400); The cylinder block mechanism (100) includes a first cylinder head (101), a cylinder barrel (102) fixedly connected to the first cylinder head (101), a second cylinder head (103) fixedly connected to one end of the cylinder barrel (102), a guide rod (104) fixedly connected to the first cylinder head (101), a piston plate (105) slidably connected to the guide rod (104), a piston rod (106) fixedly connected to the side wall of the piston plate (105), a first oil inlet pipe (107) fixedly connected to the side wall of the cylinder barrel (102), and a second oil inlet pipe (108) fixedly connected to the side wall of the cylinder barrel (102). The self-locking mechanism (200) includes a first receiving cavity (201) opened inside the piston plate (105), a guide channel (202) opened on the side wall of the first receiving cavity (201), a first elastic member (203) fixedly connected inside the first receiving cavity (201), a limiting rod (204) fixedly connected to one end of the first elastic member (203), and a limiting groove (205) opened on the side wall of the guide rod (104); The cleaning mechanism (300) includes a second receiving cavity (301) opened on the side wall of the second cylinder head (103), a squeezing block (302) slidably connected inside the second receiving cavity (301), a groove (303) opened on the side wall of the squeezing block (302), a first conductive head (304) fixedly connected to the side wall of the squeezing block (302), a second conductive head (305) fixedly connected to the side wall of the second receiving cavity (301), a second elastic element (306) fixedly connected to the side wall of the squeezing block (302), an electric telescopic rod (307) fixedly connected to the outer surface of the second cylinder head (103), and a cleaning ring (308) fixedly connected to the output end of the electric telescopic rod (307). The buffer mechanism (400) includes a support seat (401) fixedly connected to the side wall of the first cylinder head (101), a third receiving cavity (402) opened on the side wall of the support seat (401), a third elastic member (403) fixedly connected to the side wall of the third receiving cavity (402), and a buffer block (404) slidably connected inside the third receiving cavity (402). One end of the limiting rod (204) is fixedly connected to a sliding plate (206), and the sliding plate (206) is compatible with the first receiving cavity (201); One end of the first elastic member (203) is fixedly connected to the slide plate (206), and the other end is fixedly connected to the side wall of the first receiving cavity (201); The first conductive head (304), the second conductive head (305), and the electric telescopic rod (307) are all electrically connected; The cleaning ring (308) is semi-circular in shape. One end of the cleaning ring (308) is fixedly connected to a locking block (309), and the other end is provided with a locking groove (310).

2. A hydraulic cylinder controlled using pulse technology according to claim 1, characterized in that: Both the first cylinder head (101) and the second cylinder head (103) are provided with sealing gaskets between themselves and the cylinder (102).

3. A hydraulic cylinder controlled using pulse technology according to claim 2, characterized in that: The piston rod (106) has a guide groove (109) inside that is adapted to the guide rod (104).

4. A hydraulic cylinder controlled using pulse technology according to claim 2, characterized in that: The piston plate (105) and the cylinder (102) are adapted to each other.

5. A hydraulic cylinder controlled using pulse technology according to claim 4, characterized in that: One end of the second elastic member (306) is fixedly connected to the side wall of the second receiving cavity (301), and the other end is fixedly connected to the side wall of the extrusion block (302).

6. A hydraulic cylinder controlled using pulse technology according to claim 5, characterized in that: One end of the third elastic member (403) is fixedly connected to the inner wall of the third receiving cavity (402), and the other end is fixedly connected to the side wall of the buffer block (404).

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