Valve body jacking and dismounting device

Abstract

The utility model provides a valve body jacking and dismounting device. Relates to the field of component hoisting, and aims to solve the problem that damage is easily caused due to uneven stress when a valve cover is disassembled at present, a supporting beam of a cross-shaped structure is adopted as a force transmission structure, the jacking action applied by a jacking element is uniformly transmitted to lead screws, and the lifting action is uniformly applied from multiple positions through the lead screws, so that the valve cover is disassembled. The whole valve cover is isolated from the position where the valve cover is matched with the valve body, so that damage caused by uneven stress when the valve cover and the valve body are separated is reduced, the whole size is small, and the requirements for construction convenience and efficiency are met.

Description

Technical Field

[0001] The utility model relates to the field of component hoisting, in particular to a valve body lifting and disassembling device. Background Art

[0002] During the valve installation process, there may be improper valve installation. In this case, the valve body and valve cover need to be separated and reinstalled, but due to improper installation, normal disassembly is difficult to achieve. The existing technology usually requires the preparation of appropriate tools and equipment, such as cranes, lifting chains and other tools, and the use of cranes or other lifting equipment to lift the valve cover off the valve body. Before lifting, ensure that there are no other obstacles at the connection between the valve cover and the valve body to avoid damage to the valve body or valve cover. During the disassembly process, pay attention to protecting the sealing surfaces of the valve cover and the valve body to avoid damage.

[0003] When the prior art uses a crane or a chain hoist for operation, due to the imbalance of the load and the limitations of the equipment, it is impossible to effectively control the overall synchronization of the valve cover. The connection between the valve cover and the valve body is pulled unevenly and caused to be damaged, affecting the subsequent installation and operation effects. In addition, the use of large-scale mechanical equipment increases construction costs and reduces construction efficiency. For working positions with limited space in the valve area, large-scale mechanical equipment will not be able to carry out operations. Utility Model Content

[0004] The purpose of the utility model is to provide a valve body lifting and disassembly device in response to the defects of the prior art. The device adopts a cross-structured support beam as a force transmission structure to evenly transmit the lifting effect applied by the lifting element to the screw rod, and evenly apply the lifting effect from multiple positions through multiple screw rods to achieve the disassembly of the valve cover. The whole device is kept isolated from the valve cover and the valve body, thereby reducing the damage to the valve cover and the valve body due to uneven force when the valve cover is detached. The overall volume is small, meeting the requirements of construction convenience and efficiency.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] A valve body lifting and disassembly device, comprising:

[0007] Support beams, two support beams are cross-connected, and the axes of the two support beams intersect in the same plane;

[0008] Lifting elements are respectively arranged on the bottom surface of each supporting beam at both ends along the axial direction, and the direction in which the lifting elements drive the supporting beam to move is orthogonal to the axis of the connected supporting beam;

[0009] There are multiple screw rods, with the vertical line at the intersection of the axes of the two support beams as the reference line. The multiple screw rods are evenly arranged around the reference line. One end of the screw rod passes through the support beam at the corresponding position and cooperates with the nut, and the other end of the screw rod is used to cooperate with the valve cover to be removed.

[0010] Furthermore, the support beam is an I-beam, and two support beams are arranged coplanarly for connecting the bottom surfaces of the lifting elements.

[0011] Furthermore, the I-beam includes a flange plate and a web plate, and the screw rod is connected to the flange plate at the bottom of the I-beam.

[0012] Furthermore, both ends of the screw rod are provided with threaded sections, and the threaded sections at both ends are matched with nuts.

[0013] Furthermore, eight screw rods are connected to the support beam, and the screw rods located on both sides of the axis of the same support beam are symmetrically distributed relative to the axis of the support beam.

[0014] Furthermore, a through hole is provided on the support beam for the screw rod to pass through, and the through hole and the screw rod are clearance-matched.

[0015] Furthermore, the segment of the screw rod located above the through hole is matched with two nuts.

[0016] Furthermore, a fitting portion is provided at one end of the screw rod facing the valve cover to be removed, and the fitting portion is a replaceable connecting element adapted to the connecting position of the valve stem.

[0017] Furthermore, two axial ends of the support beam are respectively connected to a lifting element, and four lifting elements connecting the two support beams are evenly arranged in a circumferential direction around the reference line.

[0018] Furthermore, the lifting element is a jack, the output end of the jack is in contact with the bottom surface of the support beam, and the telescopic movement direction of the output end of the jack is perpendicular to the bottom surface of the support beam.

[0019] Compared with the prior art, the utility model has the following advantages and positive effects:

[0020] (1) In order to solve the problem that the valve cover is easily damaged due to uneven force when disassembling, a cross-structured support beam is used as a force transmission structure to evenly transmit the lifting force applied by the lifting element to the screw rod, and a plurality of screw rods are used to evenly apply the lifting force from multiple positions to achieve the removal of the valve cover. The whole is kept isolated from the valve cover and the valve body, thereby reducing the damage to the valve cover and the valve body due to uneven force when the valve cover is separated. The overall volume is small, meeting the requirements of construction convenience and efficiency.

[0021] (2) The use of an adjustable screw and nut can achieve position adjustment and adapt to the valve cover state, thereby facilitating uniform lifting and disassembly.

[0022] (3) A double nut structure is set on the screw rod to improve the bearing capacity of the screw rod on the valve cover and ensure stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 It is a schematic diagram of the valve body lifting and disassembly device in the embodiment of the utility model.

[0025] Figure 2 It is a schematic diagram of the distribution of screws on the valve body lifting and disassembly device in the embodiment of the utility model.

[0026] In the figure, 1. first support beam, 2. second support beam, 3. flange plate, 4. lifting element, 5. screw rod, 6. web plate, 7. nut. DETAILED DESCRIPTION

[0027] In a typical implementation of the present invention, Figure 1-Figure 2 As shown, a valve body lifting and disassembly device is proposed.

[0028] A valve body lifting and disassembly device is described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, the valve body lifting and disassembly device includes a support beam, a lifting element 4 and a screw rod 5. The support beam serves as a force transmission element. The lifting element 4 abuts against both ends of the support beam. The screw rod 5 is installed between the two ends of the support beam. When the lifting element 4 drives the support beam to lift vertically, it can carry the screw rod 5 to move vertically. Therefore, the screw rod 5 is connected to the valve cover to be disassembled, and the support beam is driven by the lifting element 4, thereby driving the valve cover to lift through the screw rod 5 to achieve disassembly.

[0030] The valve cover is in the shape of a disc or a nearly disc. If a single support beam is used to be distributed along the radial direction of the valve cover to be removed, it is easy to deviate when the valve cover is lifted by the screw rod 5, which makes it difficult to lift the valve cover stably and evenly as a whole. In this regard, in this embodiment, two support beams are cross-connected, the two support beams are the first support beam 1 and the second support beam 2, the axes of the two support beams are coplanar and intersect, and lifting elements 4 are respectively provided on the bottom surface of each support beam at both ends along the axial direction, so as to achieve lifting from four points and maintain the stability of the support beam.

[0031] In addition, multiple screw rods 5 are configured, with the vertical line at the intersection of the two support beam axes as the reference line, and multiple screw rods 5 are evenly arranged around the reference line. One end of the screw rod 5 passes through the support beam at the corresponding position and cooperates with the nut 7, and the other end of the screw rod 5 is used to cooperate with the valve cover to be removed.

[0032] Together, the valve cover can be uniformly applied with force and stably lifted, avoiding damage caused by the offset force of the valve cover. At the same time, the direction of action of the lifting element 4 is controlled, and the direction in which the lifting element 4 drives the support beam to move is orthogonal to the axis of the connected support beam. Under normal use, the axis of the support beam is in a horizontal state, and the installation direction of the valve cover is mostly in a vertical direction, that is, the valve cover can be lifted and disassembled along the installation direction of the valve cover, which meets the lifting and disassembly requirements of the valve cover above the valve body.

[0033] like Figure 1 As shown, the support beam is an I-beam, which includes a web in the middle and a flange plate 3 extending outside the web 6. The screw 5 is connected to the flange plate 3 at the bottom of the I-beam. The I-beam has a strong design and is easy to cut and weld. The length of the I-beam can be adjusted as needed to meet the size requirements when disassembling the valve body in different scenarios, and its size can be reduced as much as possible to meet the construction requirements in a small space.

[0034] In addition, the impact and wear resistance of I-beams are stronger than those of alternative materials, so their service life is longer, making it convenient for cyclic construction. The special structure of I-beams makes them lighter while having the strength and load-bearing capacity of other profiles. During construction, they are easier to carry, which helps save construction time and improve construction period.

[0035] The two support beams are used to connect the bottom surfaces of the lifting elements 4 and are arranged in the same plane, which is convenient for positioning and dimensioning, and ensures the layout accuracy during installation.

[0036] Threaded sections are provided at both ends of the screw rod 5, and nuts 7 are respectively matched at both ends of the threaded sections. Nuts 7 can serve as a force transmission structure between the screw rod 5 and the support beam. Some sections of the screw rod 5 are suspended under the support beam to connect the valve cover to be removed. When the screw rod 5 encounters resistance when lifting the valve cover, the resistance is transmitted to the support beam through the nut 7 above.

[0037] like Figure 2 As shown, the flange plate 3 on the upper part of the support beam is hidden, and eight screw rods 5 are connected to the support beam. The screw rods 5 on both sides of the axis of the same support beam are symmetrically distributed relative to the axis of the support beam to match the valve stem to be disassembled, and their reference line is collinear with the center line of the valve cover to ensure uniform force.

[0038] A through hole is provided on the support beam for the screw rod 5 to pass through, and the through hole and the screw rod 5 are clearance-matched to meet the requirement of adjusting the position of the screw rod 5 .

[0039] The section of the screw rod 5 located above the through hole is equipped with two nuts 7 to improve its load-bearing function. At the same time, through the mutual cooperation of the two nuts 7, the friction force of the thread can be increased, thereby enhancing the fastening force; increasing the stability of the threaded connection and preventing loosening due to vibration or other reasons.

[0040] The end of the screw rod 5 facing the valve cover to be removed is provided with a matching portion, which is a replaceable connecting element adapted to the valve stem connection position. In this embodiment, the matching portion adopts a matching structure of the screw rod 5 and the nut 7, and the lower end of the screw rod 5 can match with the threaded hole on the valve cover. At the same time, the nut 7 is tightened to maintain the matching position of the screw rod 5 and the valve cover, ensuring its stability during the disassembly process.

[0041] A lifting element 4 is connected to each of the two axial ends of the support beam, and the four lifting elements 4 connecting the two support beams are evenly arranged around the reference line. The lifting element 4 is a jack, which can be a hydraulic jack. The output end of the jack abuts against the bottom surface of the support beam, and the telescopic movement direction of the output end of the jack is perpendicular to the bottom surface of the support beam.

[0042] The lifting elements 4 are evenly distributed in the circumferential direction to provide stable and uniform support. The four lifting elements 4 are evenly distributed under the support beam to ensure the balance of the support beam during the lifting process and avoid tilting or twisting. The lifting elements 4 are connected to the axial ends of the support beam to increase the stability of the structure, especially when bearing loads; since the telescopic movement direction of the jack is perpendicular to the bottom surface of the support beam, it ensures that the support beam remains vertical during the lifting process to avoid lateral bending.

[0043] The vertical telescopic movement of the jack can ensure that the support beam is raised and lowered smoothly and efficiently, reducing operation time and improving efficiency. It can also make precise lifting and lowering adjustments as needed to adapt to different work requirements; it improves the stability, balance and rigidity of the structure, and realizes a stable, efficient and flexible support function.

[0044] The cross-shaped structure is made of I-beams, and the screw rod 5 and the hydraulic jack are evenly distributed to ensure the balance and synchronization of the load on the valve cover and avoid damage to the connection between the valve cover and the valve body; the parts in the device are simple and easy to obtain, and the purchase price is low, which can save a lot of construction costs compared with the existing technology.

[0045] When using the device, connect the 8 screw rods 5 to the valve cover to be taken out respectively. If conditions permit, the screw rods 5 can be used for connection, or the ends of the screw rods 5 can be directly welded to the valve cover to maintain the stability of the connection; connect the cross-shaped support beam to the top of the screw rods 5 and keep the support beam horizontal; place 4 sets of jacks under the ends of the support beams and keep them on the same horizontal plane; start the 4 sets of jacks at the same time, and slowly lift the valve cover until it is completely taken out.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A valve body lifting and disassembly device, characterized in that: include: Support beams, two support beams are cross-connected, and the axes of the two support beams intersect in the same plane; Lifting elements are respectively arranged on the bottom surface of each supporting beam at both ends along the axial direction, and the direction in which the lifting elements drive the supporting beam to move is orthogonal to the axis of the connected supporting beam; There are multiple screw rods, with the vertical line at the intersection of the axes of the two support beams as the reference line. The multiple screw rods are evenly arranged around the reference line. One end of the screw rod passes through the support beam at the corresponding position and cooperates with the nut, and the other end of the screw rod is used to cooperate with the valve cover to be removed.

2. The valve body lifting and disassembly device according to claim 1, characterized in that: The support beam is an I-beam, and two support beams are used to connect the bottom surfaces of the lifting elements and are arranged in the same plane.

3. The valve body lifting and disassembly device according to claim 2, characterized in that: The I-beam comprises a flange plate and a web plate, and the screw rod is connected to the flange plate at the bottom of the I-beam.

4. The valve body lifting and disassembly device according to claim 1, 2 or 3, characterized in that: The two ends of the screw rod are respectively provided with threaded sections, and the threaded sections at the two ends are respectively matched with nuts.

5. The valve body lifting and disassembly device according to claim 1, characterized in that: The support beam is connected with eight screw rods, and the screw rods located on both sides of the axis of the same support beam are symmetrically distributed relative to the axis of the support beam.

6. The valve body lifting and disassembly device according to claim 1 or 5, characterized in that: The support beam is provided with a through hole for the screw rod to pass through, and the through hole and the screw rod are in clearance fit.

7. The valve body lifting and disassembly device according to claim 6, characterized in that: The segment of the screw rod located above the through hole is matched with two nuts.

8. The valve body lifting and disassembly device according to claim 7, characterized in that: The end of the screw rod facing the valve cover to be removed is provided with a matching portion, and the matching portion is a replaceable connecting element adapted to the connecting position of the valve stem.

9. The valve body lifting and disassembly device according to claim 1, characterized in that: The two axial ends of the support beam are respectively connected with a lifting element, and the four lifting elements connecting the two support beams are evenly arranged in a circumferential direction around the reference line.

10. The valve body lifting and disassembly device according to claim 9, characterized in that: The lifting element is a jack, the output end of the jack is in contact with the bottom surface of the support beam, and the telescopic movement direction of the output end of the jack is perpendicular to the bottom surface of the support beam.

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