Anti-leakage hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to an anti-leakage hydraulic oil cylinder which comprises a cylinder barrel, a piston rod extending outwards is installed in an inner cavity of the cylinder barrel in a sliding mode, an anti-leakage mechanism and a filling mechanism are arranged on the outer side of the cylinder barrel, and the anti-leakage mechanism is used for preventing oil leakage in the cylinder barrel. The anti-leakage mechanism comprises a leather sheath, an anti-leakage plate assembly and a dismounting assembly, the leather sheath is arranged at the sliding connection position of the cylinder barrel and the piston rod, the anti-leakage mechanism enables the leather sheath to improve the sealing performance of the sliding connection position of the cylinder barrel and the piston rod, and then the two anti-leakage plates in the spliced state are arranged on the outer side of the cylinder barrel in a sleeving mode. And according to the filling mechanism, colloid filling is conducted on the surface of the leather sheath through a guide pipe arranged on a leakage-proof plate, then the abraded leather sheath is repaired in time, and therefore the situation that a large amount of oil leaks from the cylinder barrel is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a leakage-proof hydraulic oil cylinder. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple and reliable structure. Using a hydraulic cylinder to achieve reciprocating motion can eliminate the need for a deceleration device and has no transmission gap. It is widely used in the hydraulic systems of various machines.

[0003] The existing hydraulic cylinder is equipped with seals to prevent oil leakage. However, during the repeated movement of the piston rod, the seals inside the hydraulic cylinder that has been used for a long time will be damaged, causing oil to leak from the gap at the top of the cylinder. The operator is unable to detect the leakage problem of the hydraulic cylinder in time and cannot repair the hydraulic cylinder in time, which affects the normal use of the hydraulic cylinder. For this reason, a leakage-proof hydraulic cylinder is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage-proof hydraulic oil cylinder to solve the problem in the above background technology that the existing hydraulic oil cylinder cannot prevent oil leakage only by using a sealing member.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a leakage-proof hydraulic cylinder, comprising a cylinder barrel, an inner cavity of which is slidably mounted a piston rod extending outward, an outer side of which is provided with an anti-leakage mechanism and a filling mechanism, the anti-leakage mechanism being used to prevent oil leakage from the interior of the cylinder barrel;

[0006] The anti-leakage mechanism includes a leather case, an anti-leakage plate assembly and a disassembly assembly assembly;

[0007] The leather sleeve is provided at the sliding connection between the cylinder and the piston rod;

[0008] The anti-leakage plate assembly is detachably connected to the cylinder barrel via the disassembly assembly assembly;

[0009] The anti-leakage plate assembly in the installed state is used to compress the leather case;

[0010] The filling mechanism is used to fill the worn leather case with colloid.

[0011] Preferably, the leakage prevention plate assembly includes two leakage prevention plates, a seal and a card slot;

[0012] The leakage-proof plate is detachably connected to the cylinder, the sealing member is fixedly connected to the butt joint of one of the leakage-proof plates, and the clamping groove is provided at the butt joint of the other leakage-proof plate.

[0013] Preferably, the sealing member has an elastic structure, and the slot is used for the sealing member to engage therein, and the sealing member and the slot in the engaged state are used to pre-connect the two leak-proof plates.

[0014] Preferably, the disassembly assembly comprises two second bolt seats, bolts and two sets of first bolt seats;

[0015] The first bolt seat is fixedly connected to the outer wall of the leakage prevention plate, the second bolt seat is fixedly connected to the surface of the cylinder, and the bolts are threadedly connected to the first bolt seat and the second bolt seat.

[0016] Preferably, the bolts in the tightened state are used to splice and install the two leakage-proof plates in the pre-connected state, and the two leakage-proof plates in the spliced state are sleeved on the outside of the cylinder.

[0017] Preferably, the filling mechanism includes a conduit, a plug, a lamp bead and a liquid level sensor;

[0018] The conduit is fixedly connected to one of the leak-proof plates, the plug is detachably mounted on the input end of the conduit, the lamp is fixedly mounted on the outer wall of one of the leak-proof plates, and the liquid level sensor is fixedly mounted on the inner wall of one of the leak-proof plates.

[0019] Preferably, the liquid level sensor is used to detect whether there is liquid leakage in the cylinder, and the lamp bead is electrically connected to the liquid level sensor through a controller.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the anti-leakage mechanism enables the leather sleeve to improve the sealing of the sliding connection between the cylinder and the piston rod, and then the two anti-leakage plates in the spliced state are arranged on the outside of the cylinder, thereby pressing the leather sleeve, and the filling mechanism fills the surface of the leather sleeve with colloid through a catheter set on a leakage-proof plate, and then promptly repairs the worn leather sleeve, thereby preventing a large amount of oil leakage from the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the anti-leakage mechanism structure of the utility model;

[0023] Figure 3 This is a schematic structural diagram of the anti-leakage mechanism of the utility model from another perspective;

[0024] Figure 4 This is a schematic diagram of the filling mechanism structure of the utility model.

[0025] In the figure: 1. Cylinder; 2. Piston rod; 3. Anti-leakage mechanism; 301. Leather case; 302. Anti-leakage plate; 303. Seal; 304. Slot; 305. First bolt seat; 306. Second bolt seat; 307. Bolt; 4. Filling mechanism; 401. Conduit; 402. Plug; 403. Lamp bead; 404. Liquid level sensor. DETAILED DESCRIPTION

[0026] The following will be combined with the 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.

[0027] See also Figure 1-4 The utility model provides a technical solution for a leakage-proof hydraulic cylinder: a leakage-proof hydraulic cylinder, comprising a cylinder barrel 1, an inner cavity of the cylinder barrel 1 being slidably mounted with a piston rod 2 extending outward, an outer side of the cylinder barrel 1 being provided with an anti-leakage mechanism 3 and a filling mechanism 4, the anti-leakage mechanism 3 being used to prevent oil leakage from occurring inside the cylinder barrel 1;

[0028] The anti-leakage mechanism 3 includes a leather case 301, an anti-leakage plate assembly and a disassembly assembly assembly;

[0029] The leather sleeve 301 is provided at the sliding connection between the cylinder 1 and the piston rod 2;

[0030] The anti-leakage plate assembly is detachably connected to the cylinder 1 through the disassembly assembly assembly;

[0031] The anti-leakage plate assembly in the installed state is used to compress the leather case 301;

[0032] The filling mechanism 4 is used to fill the worn leather case 301 with colloid.

[0033] Please refer to Figure 2 , the anti-leakage plate assembly includes two anti-leakage plates 302, a seal 303 and a card slot 304;

[0034] The leak-proof plate 302 is detachably connected to the cylinder 1 , the sealing member 303 is fixedly connected to the joint of one leak-proof plate 302 , and the clamping groove 304 is provided at the joint of the other leak-proof plate 302 .

[0035] In this embodiment: two leakage-proof plates 302 are sleeved on the outside of the cylinder 1, and the seal 303 at the joint of one leakage-proof plate 302 is inserted into the slot 304 at the joint of the other leakage-proof plate 302, and the engaged seal 303 and the slot 304 pre-connect the two leakage-proof plates 302.

[0036] Please refer to Figure 2 The sealing member 303 has an elastic structure, and the card groove 304 is used for the sealing member 303 to engage with the inside thereof. The sealing member 303 and the card groove 304 in the engaged state are used to pre-connect the two leak-proof plates 302 .

[0037] In this embodiment, the sealing member 303 at the joint of one leakage prevention plate 302 is inserted into the card slot 304 at the joint of the other leakage prevention plate 302 , and the engaged sealing member 303 and the card slot 304 pre-connect the two leakage prevention plates 302 .

[0038] Please refer to Figure 2 , the disassembly and assembly components include two second bolt seats 306, bolts 307 and two sets of first bolt seats 305;

[0039] The first bolt seat 305 is fixedly connected to the outer wall of the leakage prevention plate 302 , the second bolt seat 306 is fixedly connected to the surface of the cylinder 1 , and the bolt 307 is threadedly connected to the first bolt seat 305 and the second bolt seat 306 .

[0040] In this embodiment: two first bolt seats 305 wrap one second bolt seat 306, and bolts 307 are used to threadably connect the two first bolt seats 305 and one second bolt seat 306. The tightened bolts 307 then splice and install the two leak-proof plates 302 in the pre-connected state.

[0041] Please refer to Figure 2 The tightened bolts 307 are used to splice and install the two leak-proof plates 302 in the pre-connected state, and the two leak-proof plates 302 in the spliced state are sleeved on the outside of the cylinder 1.

[0042] In this embodiment, the two leak-proof plates 302 in the pre-connected state are spliced and installed by tightening the bolts 307 , and then the two leak-proof plates 302 in the spliced state are sleeved on the outside of the cylinder 1 and the leather cover 301 is pressed.

[0043] Please refer to Figure 4 The filling mechanism 4 includes a conduit 401, a plug 402, a lamp bead 403 and a liquid level sensor 404;

[0044] The conduit 401 is fixedly connected to a leak-proof plate 302 , the plug 402 is detachably mounted on the input end of the conduit 401 , the lamp bead 403 is fixedly mounted on the outer wall of a leak-proof plate 302 , and the liquid level sensor 404 is fixedly mounted on the inner wall of a leak-proof plate 302 .

[0045] In this embodiment: when the leather cover 301 has been used for a long period of time and its surface is worn, the oil in the cylinder 1 will leak into the two anti-leakage plates 302 in the spliced state, and the receiving end of the liquid level sensor 404 in the powered state will detect the oil leakage. The transmitting end of the liquid level sensor 404 will then transmit the signal to the controller, and the controller will control the lamp bead 403 to light up. The lamp bead 403 in the lit state will remind the operator that there is leakage inside the two anti-leakage plates 302 and that the leather cover 301 is worn. At this time, the plug 402 at the input end of the conduit 401 is removed, and the surface of the leather cover 301 is filled with colloid through the conduit 401, and the worn leather cover 301 is repaired in time, thereby preventing a large amount of oil leakage from the cylinder 1.

[0046] Please refer to Figure 4 The liquid level sensor 404 is used to detect whether there is liquid leakage in the cylinder 1, and the lamp bead 403 is electrically connected to the liquid level sensor 404 through the controller.

[0047] In this embodiment: oil leakage is detected by the receiving end of the liquid level sensor 404 in the powered state, and the transmitting end of the liquid level sensor 404 transmits the signal to the controller. The controller controls the lamp bead 403 to light up, and the lamp bead 403 in the lit state reminds the operator that there is leakage inside the two leak-proof plates 302 and that the leather cover 301 is worn.

[0048] Working principle: First, the leather cover 301 is set at the sliding connection between the cylinder 1 and the piston rod 2, so that the leather cover 301 improves the sealing of the sliding connection between the cylinder 1 and the piston rod 2, and at this time, the two leak-proof plates 302 are sleeved on the outside of the cylinder 1, and the seal 303 at the joint of one leak-proof plate 302 is inserted into the card groove 304 at the joint of the other leak-proof plate 302, then the engaged seal 303 and the card groove 304 pre-connect the two leak-proof plates 302, and the two first bolt seats 305 wrap the second bolt seat 306, and the bolt 307 is used to thread the two first bolt seats 305 and the second bolt seat 306, then the tightened bolt 307 splices and installs the two leak-proof plates 302 in the pre-connected state, and then the two leak-proof plates 302 in the spliced state are sleeved on the outside of the cylinder 1, and the leather cover 301 is pressed;

[0049] When the leather cover 301 has been used for a long period of time and its surface is worn, the oil in the cylinder 1 will leak into the two anti-leakage plates 302 in the spliced state. The receiving end of the liquid level sensor 404 in the powered state detects the oil leakage, and the transmitting end of the liquid level sensor 404 transmits the signal to the controller. The controller controls the lamp bead 403 to light up. The lamp bead 403 in the lit state reminds the operator that there is leakage inside the two anti-leakage plates 302 and that the leather cover 301 is worn. At this time, the plug 402 at the input end of the catheter 401 is removed, and the surface of the leather cover 301 is filled with colloid through the catheter 401, and the worn leather cover 301 is repaired in time, thereby preventing a large amount of oil leakage from the cylinder 1.

[0050] 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 leak-proof hydraulic cylinder, comprising a cylinder barrel (1), wherein a piston rod (2) extending outward is slidably mounted in an inner cavity of the cylinder barrel (1), and characterized in that: An anti-leakage mechanism (3) and a filling mechanism (4) are provided on the outside of the cylinder (1), and the anti-leakage mechanism (3) is used to prevent oil leakage from occurring inside the cylinder (1); The anti-leakage mechanism (3) comprises a leather case (301), an anti-leakage plate assembly and a disassembly assembly assembly; The leather sleeve (301) is arranged at the sliding connection between the cylinder (1) and the piston rod (2); The anti-leakage plate assembly is detachably connected to the cylinder (1) via the disassembly assembly assembly; The anti-leakage plate assembly in the installed state is used to compress the leather case (301); The filling mechanism (4) is used to fill the worn leather case (301) with colloid.

2. The anti-leakage hydraulic cylinder according to claim 1, characterized in that: The leakage prevention plate assembly includes two leakage prevention plates (302), a sealing member (303) and a card slot (304); The leak-proof plate (302) is detachably connected to the cylinder (1), the sealing member (303) is fixedly connected to the joint of one leak-proof plate (302), and the clamping groove (304) is opened at the joint of the other leak-proof plate (302).

3. The anti-leakage hydraulic cylinder according to claim 2, characterized in that: The sealing member (303) has an elastic structure, and the clamping groove (304) is used for the sealing member (303) to clamp inside thereof. The sealing member (303) and the clamping groove (304) in the clamped state are used to pre-connect the two leak-proof plates (302).

4. The anti-leakage hydraulic cylinder according to claim 2, characterized in that: The disassembly assembly comprises two second bolt seats (306), bolts (307) and two groups of first bolt seats (305); The first bolt seat (305) is fixedly connected to the outer wall of the anti-leakage plate (302), the second bolt seat (306) is fixedly connected to the surface of the cylinder (1), and the bolt (307) is threadedly connected to the first bolt seat (305) and the second bolt seat (306).

5. The anti-leakage hydraulic cylinder according to claim 4, characterized in that: The bolt (307) in a tightened state is used to splice and install the two leak-proof plates (302) in a pre-connected state, and the two leak-proof plates (302) in the spliced state are sleeved on the outside of the cylinder (1).

6. The anti-leakage hydraulic cylinder according to claim 2, characterized in that: The filling mechanism (4) comprises a conduit (401), a plug (402), a lamp bead (403) and a liquid level sensor (404); The conduit (401) is fixedly connected to one of the leak-proof plates (302); the plug (402) is detachably mounted on the input end of the conduit (401); the lamp bead (403) is fixedly mounted on the outer wall of one of the leak-proof plates (302); and the liquid level sensor (404) is fixedly mounted on the inner wall of one of the leak-proof plates (302).

7. The anti-leakage hydraulic cylinder according to claim 6, characterized in that: The liquid level sensor (404) is used to detect whether there is liquid leakage in the cylinder (1), and the lamp bead (403) is electrically connected to the liquid level sensor (404) via a controller.

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