Hydraulic cylinder end cover dismounting device and using method

Abstract

The invention discloses a hydraulic cylinder end cover dismounting device and a using method, and relates to the technical field of large hydraulic cylinder end cover dismounting, the hydraulic cylinder end cover dismounting device comprises a ring body, a plurality of sliding plates, a plurality of connecting bolts, a first handle and a second handle, the ring body comprises a first semi-ring and a second semi-ring, and the first end of the first semi-ring is hinged to the first end of the second semi-ring; the second end of the first half ring is detachably and fixedly connected with the second end of the second half ring; the sliding plates are slidably connected with the ring body in the radial direction of the ring body and can keep the positions after sliding, the sliding plates are arranged in the circumferential direction of the ring body, and through holes are formed in the ends, close to the circle center of the ring body, of the sliding plates. One end of the connecting bolt penetrates through the through hole and then is in threaded connection with a mounting hole in the end cover to be disassembled; the first handle is fixedly connected with the first half ring; the hydraulic cylinder end cover dismounting device is simple in structure and convenient to use, and the end cover of the hydraulic cylinder with the end cover inside can be dismounted.

Description

Technical Field

[0001] The invention relates to the technical field of large hydraulic cylinder end cover disassembly, and in particular to a hydraulic cylinder end cover disassembly device and a use method thereof. Background Art

[0002] Hydraulic mechanisms are widely used in many industries, especially in construction, manufacturing, transportation, mining and other industries. They are important mechanical devices. In the hydraulic system, the hydraulic pump, as a power element, provides pressurized oil to convert mechanical energy into hydraulic energy. The hydraulic valve then controls the pressure, flow and direction of the oil. This enables the hydraulic cylinder to perform linear reciprocating or swinging motion.

[0003] The hydraulic cylinder is an important actuator in the hydraulic system. The end cap of the hydraulic cylinder is often sealed by screwing with internal threads. When replacing the seal of the hydraulic cylinder, repairing the hydraulic rod or the hydraulic cylinder body, the hydraulic cylinder often needs to be disassembled. Due to the long service life of the equipment, especially the large hydraulic cylinder body, the end cap of the hydraulic cylinder adopts a screwing mechanism. During the disassembly process, the maintenance personnel have difficulty in on-site disassembly because they do not have special disassembly tools.

[0004] According to the search data, in general, the sealing end cover of the hydraulic cylinder in some hydraulic transmission mechanisms often adopts a screwing mechanism. In order to facilitate the simple, efficient and convenient disassembly and disassembly of the hydraulic cylinder end cover, an operating handle and a semicircular wrench are usually combined to achieve the removal and disassembly of the hydraulic cylinder end cover. This device is efficient and fast, and it solves the problem of rapid disassembly of the mechanism. However, this device can only remove the hydraulic cylinder with the end cover or cylinder head exposed to the outside, and it is difficult to remove the hydraulic cylinder with the end cover inside. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic cylinder end cover disassembly device and a method of use to solve the problems existing in the above-mentioned prior art. The device has a simple structure and is easy to use, and can remove the end cover of a hydraulic cylinder with the end cover inside.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a device for disassembling an end cover of a hydraulic cylinder, comprising: a ring body, a plurality of slide plates, a plurality of connecting bolts, a first handle and a second handle, the ring body comprising a first half ring and a second half ring, the first end of the first half ring being hingedly connected to the first end of the second half ring, the second end of the first half ring and the second end of the second half ring being detachably fixedly connected; each of the slide plates is slidably connected to the ring body in the radial direction of the ring body and can maintain the position after sliding, each of the slide plates is arranged in the circumferential direction of the ring body, and a through hole is provided at one end of the slide plate close to the center of the ring body; one end of the connecting bolt is used to pass through the through hole and then be threadedly connected to the mounting hole on the end cover to be disassembled; the first handle is fixedly connected to the first half ring; the second handle is fixedly connected to the second half ring.

[0008] Preferably, it further comprises a plurality of fixing pin groups, each of the fixing pin groups being arranged along the circumference of the ring body, the fixing pin groups comprising a plurality of fixing pins arranged along the radial direction of the ring body, and the fixing pin groups being used to guide the sliding direction of the slide plate.

[0009] Preferably, it also includes a plurality of fastening bolts and nuts, the slide plate is provided with a sliding hole, a fixing pin group is provided in one of the sliding holes and can slide in the sliding hole, a locking hole is provided on the ring body between each of the fixing pins in the fixing pin group, and the fastening bolt is used to pass through the sliding hole and the locking hole and then be threadedly connected with the nut to fix the slide plate to the guard.

[0010] Preferably, the slide plates are evenly arranged in the circumferential direction of the ring body.

[0011] Preferably, the first handle and the second handle are arranged opposite to each other on the ring body.

[0012] Preferably, it also includes an articulated bolt, an articulated nut, a closed bolt and a closed nut, the first end of the first half ring is provided with a first protrusion, the first protrusion is provided with a first articulated hole, the second end of the first half ring is provided with a first groove, the first groove is provided with a first connecting hole, the first end of the second half ring is provided with a second groove, the second groove is provided with a second articulated hole, the second end of the second half ring is provided with a second protrusion, the second protrusion is provided with a second connecting hole, the articulated bolt is used to pass through the first articulated hole and the second articulated hole and then be threadedly connected to the articulated nut, and the closed bolt is used to pass through the first connecting hole and the second connecting hole and be threadedly connected to the closed nut.

[0013] The present invention also provides a method for using the hydraulic cylinder end cover device as described above, comprising the following steps:

[0014] After the second end of the opened first half ring and the second end of the second half ring are disassembled, they are sleeved on the outside of the hydraulic rod of the hydraulic cylinder and then the second end of the first half ring and the second end of the second half ring are fixed;

[0015] Adjust the position of the slide plate according to the distribution of mounting holes on the end cover to be removed so that the through holes correspond to and are maintained with the mounting holes; pass the connecting bolts through the through holes and thread them with the mounting holes on the end cover; the maintenance personnel hold the first handle and the second handle respectively and apply force to the ring body by rotating the first handle and the second handle to gradually rotate the end cover out, and continue to apply force until the end cover is completely removed.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention provides a device for disassembling an end cover of a hydraulic cylinder and a method for using the device. The device adopts a detachable ring body structure, which is convenient for installing the device on the end cover of the hydraulic cylinder. The slide plate can slide in the radial direction of the ring body and can be fixed in position, so as to adapt to end covers of different sizes. The connecting bolt can be connected with the mounting hole on the end cover. The end cover can be disassembled by rotating the first handle and the second handle. The operation is convenient and quick, and the end cover of the hydraulic cylinder with the end cover inside can be disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a hydraulic cylinder end cover disassembly device provided by the present invention;

[0020] Figure 2 A cross-sectional view of a connection between a first end of a first half ring and a second end of a second half ring in a disassembly device for a hydraulic cylinder end cover provided by the present invention;

[0021] Figure 3 A partial enlarged view of a hydraulic cylinder end cover disassembly device provided by the present invention; Figure 3 A partial enlarged view of a hydraulic cylinder end cover disassembly device provided by the present invention;

[0022] Figure 4 A schematic diagram of the structure of the hydraulic cylinder end cover disassembly device provided by the present invention when in use;

[0023] In the figure: 1, first handle; 2, first half ring; 3, slide plate; 4, fastening bolt; 5, sliding hole; 6, fixing pin; 7, closing bolt; 8, second half ring; 9, hinge bolt; 10, through hole. DETAILED DESCRIPTION

[0024] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a hydraulic cylinder end cover disassembly device and a method of use to solve the problems existing in the above-mentioned prior art. The device has a simple structure and is easy to use, and can remove the end cover of a hydraulic cylinder with the end cover inside.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] The present invention provides a device for disassembling a hydraulic cylinder end cover, such as Figures 1 to 4 As shown, it includes: a ring body, a plurality of slide plates 3, a plurality of connecting bolts, a first handle 1 and a second handle, the ring body includes a first half ring 2 and a second half ring 8, the first end of the first half ring 2 is hingedly connected to the first end of the second half ring 8, and the second end of the first half ring 2 and the second end of the second half ring 8 are detachably fixedly connected; each slide plate 3 is slidably connected to the ring body in the radial direction of the ring body and can maintain the position after sliding, each slide plate 3 is arranged in the circumferential direction of the ring body, and a through hole 10 is provided at one end of the slide plate 3 close to the center of the ring body; one end of the connecting bolt is used to pass through the through hole 10 and then be threadedly connected to the mounting hole on the end cover to be removed; the first handle 1 is fixedly connected to the first half ring 2; the second handle is fixedly connected to the second half ring 8, and a detachable ring body structure is adopted, so that the device can be conveniently installed on the end cover of the hydraulic cylinder. The slide plate 3 can slide in the radial direction of the ring body and can be fixed in position, so as to adapt to end covers of different sizes, and the connecting bolt can be connected to the mounting hole on the end cover, and the end cover can be removed by turning the handle, which is convenient and quick to operate.

[0028] In a preferred embodiment, the hydraulic cylinder end cover disassembly device also includes a plurality of fixing pins 6 groups, each fixing pin 6 group is arranged along the circumference of the ring body, and the fixing pin 6 group includes a plurality of fixing pins 6 arranged along the radial direction of the ring body. The fixing pin 6 group is used to guide the sliding direction of the slide plate 3. The fixing pin 6 group is arranged to guide the sliding direction of the slide plate 3 to ensure that the slide plate 3 slides stably in the radial direction, thereby improving the reliability and accuracy of the device.

[0029] In a preferred embodiment, the hydraulic cylinder end cover disassembly device also includes a plurality of fastening bolts 4 and nuts, the slide plate 3 is provided with a sliding hole 5, a fixing pin 6 group is arranged in a sliding hole 5 and can slide in the sliding hole 5, a locking hole is provided on the ring body between each fixing pin 6 in a fixing pin 6 group, the fastening bolt 4 is used to pass through the sliding hole 5 and the locking hole and then be threadedly connected with the nut to fix the slide plate 3 to the guard body, and the slide plate 3 is fixed to the ring body by the fastening bolts 4 and the nuts, ensuring that the slide plate 3 will not slide accidentally during the disassembly process, thereby improving the stability and safety of the device.

[0030] In a preferred embodiment, the slide plates 3 are evenly arranged in the circumferential direction of the ring body, so that the force is evenly applied when the end cover is disassembled, thereby improving the efficiency and stability of disassembly.

[0031] In a preferred embodiment, the first handle 1 and the second handle are arranged opposite to each other on the ring body, and the first handle 1 and the second handle are arranged opposite to each other, which is convenient for the operator to use both hands, making the disassembly process more labor-saving and stable.

[0032] In a preferred embodiment, the hydraulic cylinder end cover disassembly device further comprises an articulation bolt 9, an articulation nut, a closing bolt 7 and a closing nut, the first end of the first half ring 2 is provided with a first protrusion, the first protrusion is provided with a first articulation hole, the second end of the first half ring 2 is provided with a first groove, the first groove is provided with a first connection hole, the first end of the second half ring 8 is provided with a second groove, the second groove is provided with a second articulation hole, the second end of the second half ring 8 is provided with a second protrusion, the second protrusion is provided with a second connection hole, the articulation bolt 9 is used to pass through the first articulation hole and the second articulation hole and then be threadedly connected with the articulation nut, the closing bolt 7 is used to pass through the first connection hole and the second connection hole and be threadedly connected with the closing nut, the articulation connection of the first half ring 2 and the second half ring 8 is realized by the articulation bolt 9 and the articulation nut, and the installation and disassembly of the device are convenient. The closing bolt 7 and the closing nut are used to fix the other end of the first half ring 2 and the second half ring 8 to ensure the stability of the device during use.

[0033] The present invention also provides a method for using the above hydraulic cylinder end cover device, comprising the following steps:

[0034] 1. Preparation

[0035] Check whether all parts of the disassembled hydraulic cylinder end cover device are intact, including the ring body, the slide plate 3, the connecting bolts, the first handle 1, the second handle, 6 sets of fixing pins, the fastening bolts 4, the nuts, the hinge bolts 9, the hinge nuts, the closing bolts 7 and the closing nuts, etc.

[0036] 2. Installation Phase

[0037] Open the ring body, that is, remove the closing nut and closing bolt 7 at the second end of the first half ring 2 and the second end of the second half ring 8, and then rotate them around the hinge bolt 9 to open;

[0038] Place the opened ring body around the end cover of the hydraulic cylinder so that the slide plate 3 is close to the end cover;

[0039] Close the first half ring 2 and the second half ring 8, so that the second end of the first half ring 2 and the second end of the second half ring 8 are close to each other; pass the closing bolt 7 through the first connecting hole at the second end of the first half ring 2 and the second connecting hole at the second end of the second half ring 8, and then threadably connect the closing bolt 7 with the closing nut to close and fix the ring body on the end cover of the hydraulic cylinder;

[0040] Adjust the position of each slide plate 3 in the radial direction of the ring body so that the through hole 10 at one end close to the center of the ring body is aligned with the mounting hole on the end cover;

[0041] After the position of the slide plate 3 is adjusted, the fastening bolt 4 is passed through the sliding hole 5 of the slide plate 3 and the locking hole on the ring body, and then threadedly connected with the nut to fix the slide plate 3 and the ring body.

[0042] 3. Disassembly stage

[0043] Pass one end of the connecting bolt through the through hole 10 on the slide plate 3, and then screw it into the mounting hole on the end cover to be removed, so that the device is firmly connected to the end cover;

[0044] The operator holds the first handle 1 and the second handle with both hands respectively.

[0045] Turn the handle forcefully to drive the hydraulic cylinder end cover to rotate through the connecting bolts, thereby realizing the removal of the end cover.

[0046] 4. After disassembly is completed

[0047] Reverse the above steps to remove the hydraulic cylinder end cover device from the hydraulic cylinder end cover, and keep all parts properly for next use.

[0048] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for disassembling a hydraulic cylinder end cover, characterized in that: include: A ring body, the ring body comprising a first half ring and a second half ring, the first end of the first half ring being hingedly connected to the first end of the second half ring, and the second end of the first half ring being detachably fixedly connected to the second end of the second half ring; A plurality of slide plates, each of which is slidably connected to the ring body in the radial direction of the ring body and can maintain a position after sliding, each of which is arranged in the circumferential direction of the ring body, and a through hole is provided at one end of the slide plate close to the center of the ring body; A plurality of connecting bolts, one end of each connecting bolt being used to pass through the through hole and then be threadedly connected to a mounting hole on the end cover to be removed; a first handle, the first handle being fixedly connected to the first half ring; and A second handle is fixedly connected to the second half ring.

2. The device for removing the end cover of a hydraulic cylinder according to claim 1, characterized in that: It also includes a plurality of fixing pin groups, each of which is arranged along the circumference of the ring body. The fixing pin group includes a plurality of fixing pins arranged along the radial direction of the ring body, and the fixing pin group is used to guide the sliding direction of the slide plate.

3. The device for removing the end cover of a hydraulic cylinder according to claim 2, characterized in that: It also includes multiple fastening bolts and nuts. The skateboard is provided with a sliding hole. A fixing pin group is arranged in one of the sliding holes and can slide in the sliding hole. A locking hole is arranged on the ring body between each fixing pin in the fixing pin group. The fastening bolt is used to pass through the sliding hole and the locking hole and then be threadedly connected with the nut to fix the skateboard to the guard.

4. The device for removing the end cover of a hydraulic cylinder according to claim 3, characterized in that: The slide plates are evenly arranged in the circumferential direction of the ring body.

5. The device for removing the hydraulic cylinder end cover according to claim 4, characterized in that: The first handle and the second handle are arranged opposite to each other on the ring body.

6. The device for removing the end cover of a hydraulic cylinder according to claim 1, characterized in that: It also includes an articulated bolt, an articulated nut, a closed bolt and a closed nut. The first end of the first half ring is provided with a first protrusion, the first protrusion is provided with a first articulated hole, the second end of the first half ring is provided with a first groove, the first groove is provided with a first connecting hole, the first end of the second half ring is provided with a second groove, the second groove is provided with a second articulated hole, the second end of the second half ring is provided with a second protrusion, the second protrusion is provided with a second connecting hole, the articulated bolt is used to pass through the first articulated hole and the second articulated hole and then be threadedly connected to the articulated nut, and the closed bolt is used to pass through the first connecting hole and the second connecting hole and be threadedly connected to the closed nut.

7. A method for removing a hydraulic cylinder end cover device as claimed in claims 1 to 6, characterized in that: The following steps are involved: After the second end of the opened first half ring and the second end of the second half ring are disassembled, they are sleeved on the outside of the hydraulic rod of the hydraulic cylinder and then the second end of the first half ring and the second end of the second half ring are fixed; Adjust the position of the slide plate according to the distribution of mounting holes on the end cover to be removed so that the through holes correspond to and are maintained with the mounting holes; pass the connecting bolts through the through holes and thread them with the mounting holes on the end cover; the maintenance personnel hold the first handle and the second handle respectively and apply force to the ring body by rotating the first handle and the second handle to gradually rotate the end cover out, and continue to apply force until the end cover is completely removed.

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