Lifting tool for pressure body

Abstract

The utility model discloses a kind of hoisting jigs of pressure body, pressure body is used for installing the connecting rod bolt of large reciprocating compressor, hoisting jig includes: two half-ring groove bodies and hoisting part, hoisting part is connected in the first end of half-ring groove body, the second end of two half-ring groove bodies is movably connected to make two half-ring groove bodies be set as half-open structure, half-ring groove body is provided with accommodating groove to the side towards the center of circle, the accommodating groove of two half-ring groove bodies is communicated to be used for accommodating pressure body. Thus, by hoisting jig, the accommodation and carrying of pressure body are realized, and cooperate with crane, by single person, pressure body and connecting rod bolt can be aligned and locking bolt, can satisfy the requirement that large thrust reciprocating compressor connecting rod bolt is installed conveniently and efficiently, with the advantages of saving labor, saving effort, efficient, safe, high reliability.

Description

Technical Field

[0001] This utility model relates to the field of assembly technology, and in particular to a lifting fixture for a pressure body. Background Technology

[0002] With the widespread application of high-thrust reciprocating compressors in various fields, the demand for high-thrust reciprocating compressors is gradually increasing. Therefore, the requirements for convenient and efficient installation of high-thrust reciprocating compressors are gradually rising.

[0003] Currently, high-thrust reciprocating compressors, such as the 125-ton and 150-ton series, typically use hydraulic tightening for their connecting rod bolts. This requires the use of a pressure body fixture to tighten the bolts. The pressure body fixture weighs approximately 20 kg. Under existing tightening methods, during pre-commissioning assembly on the test bench, one person must stand in the oil bath of the compressor body to support the pressure body while another person aligns the pressure body with the connecting rod bolts and tightens them. This process is time-consuming, labor-intensive, and unsafe, resulting in low assembly efficiency for high-thrust reciprocating compressors. Utility Model Content

[0004] In view of this, the present invention provides a lifting fixture for a pressure body, which realizes the containment and bearing of the pressure body. With the help of a crane, a single person can align the pressure body with the connecting rod bolt and tighten the bolt. It can meet the requirements of convenient and efficient installation of connecting rod bolts of high thrust reciprocating compressors, and has the advantages of saving labor, saving effort, high efficiency, safety and high reliability.

[0005] An embodiment of this utility model provides a lifting fixture for a pressure body used to install the connecting rod bolts of a large reciprocating compressor. The lifting fixture includes two semi-annular grooves and a lifting part. The lifting part is connected to the first end of the semi-annular grooves, and the second ends of the two semi-annular grooves are movably connected so that the two semi-annular grooves are configured as a semi-open structure. A receiving groove is provided on the side of the semi-annular grooves facing the center, and the receiving grooves of the two semi-annular grooves are connected to accommodate the pressure body.

[0006] Furthermore, the lifting fixture for the pressure body also includes: a connector, which passes through the sidewalls of the second ends of the two semi-annular grooves to hinge the two semi-annular grooves; a locking member, located outside the receiving groove, which is used to connect with the connector and the semi-annular grooves to limit the movement of the connector relative to the semi-annular grooves; and a pipe, located inside the receiving groove and sleeved on the outside of the connector, which is configured to be rotatable relative to the connector.

[0007] Furthermore, the lifting fixture for the pressure body also includes a rolling element, which is installed inside the receiving groove and is rotatable relative to the semi-annular groove.

[0008] Furthermore, the rolling element includes: a mounting portion connected to the bottom wall of the receiving groove, an arc-shaped structure provided in the middle of the mounting portion, the arc-shaped structure being hollowly arranged between the arc-shaped structure and the bottom wall, and a first clearance opening provided in the middle of the arc-shaped structure; and a shaft member housed between the arc-shaped structure and the bottom wall, at least a portion of the shaft member being exposed in the first clearance opening, and the shaft member being configured to roll relative to the arc-shaped structure.

[0009] Furthermore, the height of the arc-shaped structure is equal to the diameter of the shaft, and the radius of the arc-shaped structure is equal to the radius of the shaft.

[0010] Furthermore, the opening angle of the two semi-annular grooves ranges from 0° to 180°; and / or the radius of the semi-annular grooves is from 130mm to 170mm; and / or the arc of the semi-annular grooves is from 140° to 160°; and / or the semi-annular grooves are made of stainless steel.

[0011] Furthermore, the semi-annular groove includes a bottom plate and side plates located on both sides of the bottom plate, the bottom plate and the side plates together forming a receiving groove with openings at both ends; wherein, the width of the bottom plate is 70mm to 90mm, the height of the side plates is 25mm to 35mm, and the thickness of the bottom plate and / or the side plates is 1mm to 3mm.

[0012] Furthermore, the bottom wall of the receiving tank has a second clearance opening at the first end, and the two ends of the hoisting part are distributed on both sides of the second clearance opening and are movably connected to the side wall of the receiving tank.

[0013] Furthermore, the side wall of the receiving groove is provided with a through hole, and the end of the lifting part passes through the through hole and contacts part of the lifting part to form a ring structure. The ring structure is rotatable relative to the semi-annular groove.

[0014] Furthermore, the second clearance opening is U-shaped, with a length of 60mm to 80mm along the semi-annular groove and a width of 15mm to 30mm along the semi-annular groove; and / or the diameter of the through hole is 7mm to 9mm; and / or the lifting part is made of steel wire with a diameter of 4mm to 6mm; and / or the diameter of the annular structure is 15mm to 25mm.

[0015] The lifting fixture for a pressure body provided in this embodiment includes two semi-annular grooves and a lifting part. The second ends of the two semi-annular grooves are movably connected, forming a semi-open structure. Since each semi-annular groove has a receiving groove on its side facing the center, and these grooves are interconnected, the pressure body can be accommodated in the interconnected receiving grooves when the two semi-annular grooves are in the open state. The lifting part is connected to the first end of each semi-annular groove and is used in conjunction with a crane. When the crane lifts the pressure body, it automatically tightens the two semi-annular grooves, locking the pressure body in place. Thus, the lifting fixture can accommodate and support the pressure body. It is understood that by connecting the crane to the lifting part, the pressure body can be moved to a suitable position, at which point a single person can align the pressure body with the connecting rod bolt and tighten the bolt. Compared to related technologies where one person needs to be in the oil tank of the machine body to hold the pressure body while another person aligns the pressure body with the connecting rod bolts and tightens the bolts, this assembly method simplifies the operation of holding the pressure body in the oil tank. It allows one person to work with a crane and lifting fixtures to tighten the connecting rod bolts using the pressure body. This method is labor-saving, efficient, safe, and highly reliable, meeting the requirements of convenient and efficient installation of connecting rod bolts for high-thrust reciprocating compressors, and is suitable for widespread application.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein: Figure 1 A structural schematic diagram of the hoisting fixture provided in an embodiment of the present invention is shown from one perspective; Figure 2 A schematic diagram of the assembled hoisting fixture and pressure body provided in an embodiment of this utility model is shown.

[0018] in, Figures 1 to 2 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Lifting fixture, 110 Semi-annular groove, 111 Receiving groove, 112 Base plate, 113 Side plate, 114 Second clearance opening, 115 Through hole, 120 Lifting part, 121 Ring structure, 130 Connector, 140 Locking part, 150 Pipe fitting, 160 Rolling part, 161 Mounting part, 1611 Arc structure, 1612 First clearance opening, 162 Shaft, 200 Pressure body. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0021] The following reference Figure 1 and Figure 2 The present invention describes a lifting fixture 100 for a pressure body 200 according to some embodiments of the present invention, wherein the pressure body 200 is used to install the connecting rod bolts of a large reciprocating compressor, that is, the pressure body 200 is used to hydraulically tighten the connecting rod bolts of the large reciprocating compressor.

[0022] like Figure 1 and Figure 2 As shown in the embodiment of this utility model, a lifting fixture 100 for a pressure body 200 is provided, including: two semi-annular grooves 110 and a lifting part 120. The lifting part 120 is connected to the first end of the semi-annular groove 110, and the second ends of the two semi-annular grooves 110 are movably connected so that the two semi-annular grooves 110 are configured as a semi-open structure. A receiving groove 111 is provided on the side of the semi-annular groove 110 facing the center. The receiving grooves 111 of the two semi-annular grooves 110 are connected to each other to accommodate the pressure body 200.

[0023] The lifting fixture 100 for the pressure body 200 provided in this embodiment of the utility model includes two semi-annular grooves 110 and a lifting part 120. The second ends of the two semi-annular grooves 110 are movably connected, allowing the first ends of the two semi-annular grooves 110 to move closer or further apart, forming a semi-open structure. That is, the two semi-annular grooves 110 can be opened or closed by the movable connection of their second ends. Since a receiving groove 111 is provided on the side of the semi-annular groove 110 facing the center, and the receiving grooves 111 of the two semi-annular grooves 110 are connected, the pressure body 200 can be accommodated in the connected receiving grooves 111 when the two semi-annular grooves 110 are in the open state. The lifting part 120 is connected to the first end of the semi-annular groove 110. The lifting part 120 is used to cooperate with the crane. When the crane lifts the two semi-annular grooves 110 by connecting the lifting part 120, the first ends of the two semi-annular grooves 110 move closer to each other so that the two semi-annular grooves 110 close together. Thus, the pressure body 200 can be contained and wrapped inside the receiving groove 111 of the two semi-annular grooves 110. That is, after the crane lifts, the two semi-annular grooves 110 can be automatically tightened and locked to lock the pressure body 200. Thus, the lifting fixture 100 realizes the containment and bearing of the pressure body 200. Understandably, by connecting the crane to the lifting unit 120, the lifting fixture 100 carrying the pressure body 200 can be moved to a suitable position using the crane. Then, the pressure body 200 can be moved to the appropriate position, allowing a single person to align and tighten the pressure body 200 with the connecting rod bolt, achieving hydraulic fastening of the connecting rod bolt. Compared to related technologies where one person needs to be in the machine body oil tank dragging the pressure body while another person aligns and tightens the pressure body with the connecting rod bolt, this simplifies the operation of one person dragging the pressure body in the machine body oil tank. It allows one person, in conjunction with the crane and lifting fixture 100, to achieve the operation of tightening the connecting rod bolt with the pressure body 200. This is labor-saving, efficient, safe, and highly reliable, meeting the requirements of convenient and efficient installation of high-thrust reciprocating compressors, and is suitable for widespread application.

[0024] Furthermore, the lifting part 120 can be fixedly connected to the first end of the semi-annular groove 110, such as through welding, integral molding, bolts, or other structures. Alternatively, the lifting part 120 can be movably connected to the first end of the semi-annular groove 110, such as through its own structure, movable connecting parts, etc. The lifting part 120 can be a lifting lug, lifting ring, sling, or other lifting structure.

[0025] Furthermore, the second ends of the two semi-annular grooves 110 are movably connected, such as by rotating the two semi-annular grooves 110 through a rotating member, pivoting the two semi-annular grooves 110 through a pivoting structure, hinged the two semi-annular grooves 110 through a hinge, or movably connected in other ways.

[0026] Furthermore, the pressure body 200 is cylindrical, which allows the pressure body 200 to be contained more closely within the receiving groove 111, reducing the risk of the pressure body 200 tipping over and detaching from the receiving groove 111. This enables the semi-open structure composed of two semi-annular grooves 110 to contain and support the cylindrical pressure body 200.

[0027] like Figure 1 As shown, in some possible embodiments provided by this utility model, the opening and closing angles of the two semi-annular grooves 110 range from 0° to 180°, meaning that the two semi-annular grooves 110 can open and close at any angle within the range of 0° to 180°, and the maximum opening and closing angle of the two semi-annular grooves 110 can reach 180°. Therefore, when the opening and closing angles of the two semi-annular grooves 110 are large, the pressure body 200 can be conveniently placed in the receiving groove 111. When the opening and closing angles of the two semi-annular grooves 110 are small, the pressure body 200 contained in the receiving groove 111 can be reliably and stably contained and enclosed within the receiving groove 111, meaning that the pressure body 200 can be locked in place by the two semi-annular grooves 110, reducing the risk of the pressure body 200 detaching from the receiving groove 111, and enabling the lifting fixture 100 to achieve a good load-bearing function for the pressure body 200.

[0028] It is understandable that by reasonably setting the structure and / or the movable connection of the second ends of the two semi-annular grooves 110, the maximum value of the opening and closing angle of the two semi-annular grooves 110 can exceed 180°. For example, the maximum value of the opening and closing angle of the two semi-annular grooves 110 can be any angle from 180° to 360°, or the maximum value of the opening and closing angle of the two semi-annular grooves 110 can be any angle from 45° to 360°.

[0029] like Figure 1 As shown, in some possible embodiments provided by this utility model, the radius of the semi-annular groove 110 is 130mm to 170mm. Therefore, the semi-open structure formed by the two semi-annular grooves 110 can be used for the hoisting of pressure bodies 200 of various specifications, thus having a wide range of applications. Specifically, the radius of the semi-annular groove 110 can be 130mm, 140mm, 150mm, 160mm, 170mm, or any other size between 130mm and 170mm.

[0030] like Figure 2As shown, in some possible embodiments provided by this utility model, the arc of the semi-annular groove 110 is 140° to 160°. Therefore, the semi-open structure formed by the two semi-annular grooves 110 can be used for hoisting various specifications of pressure bodies 200, thus having a wide range of applications. Specifically, the arc of the semi-annular groove 110 can be 140°, 145°, 150°, 155°, 160°, or any angle between 140° and 160°.

[0031] In some possible embodiments provided by this utility model, the semi-annular groove 110 is made of stainless steel. Stainless steel has advantages such as corrosion resistance, high strength, and high temperature resistance, which can meet the assembly conditions of hydraulic locking of connecting rod bolts of large reciprocating compressors.

[0032] like Figure 1 and Figure 2 As shown, in some possible embodiments provided by this utility model, the lifting fixture 100 of the pressure body 200 further includes a connector 130, which passes through the sidewall of the second end of the two semi-annular grooves 110 to make the two semi-annular grooves 110 hinged, thereby realizing the movable connection of the second ends of the two semi-annular grooves 110, so that the two semi-annular grooves 110 can form a semi-open structure.

[0033] like Figure 1 and Figure 2 As shown, the lifting fixture 100 of the pressure body 200 also includes a locking member 140, which is used to connect with the connector 130 and the semi-annular groove 110 to limit the movement of the connector 130 relative to the semi-annular groove 110. Thus, the locking member 140 can reliably and stably connect the connector 130 and the two semi-annular grooves 110 to achieve the movable connection of the second ends of the two semi-annular grooves 110, and prevent the second ends of the two semi-annular grooves 110 from separating, thereby ensuring the reliability of the lifting fixture 100.

[0034] Furthermore, such as Figure 1 and Figure 2 As shown, the locking member 140 is located outside the receiving groove 111, so that the locking member 140 does not occupy the space inside the receiving groove 111, providing sufficient space for the receiving groove 111 to accommodate the pressure body 200. This allows most or all of the pressure body 200 to be stably and snugly accommodated inside the receiving groove 111, reducing the risk of the pressure body 200 falling off the receiving groove 111 and improving the stability and safety of the lifting fixture 100 in carrying the pressure body 200.

[0035] like Figure 1 and Figure 2As shown, the lifting fixture 100 for the pressure body 200 also includes a pipe fitting 150. The pipe fitting 150 is located inside the receiving groove 111 and sleeved on the outside of the connector 130. The pipe fitting 150 is configured to roll relative to the connector 130. Thus, by allowing the pipe fitting 150 to roll relative to the connector 130, the pressure body 200 housed in the receiving groove 111 can be well guided, allowing the pressure body 200 to rotate freely and smoothly within the receiving groove 111 to achieve the tightening operation. This reduces the problems of directional and force deviation that are easily caused when manually dragging the pressure body 200, thereby reducing the risk of thread damage and improving the reliability and stability of the hydraulic tightening operation of the connecting rod bolts.

[0036] Specifically, the width direction of the receiving groove 111 can be as follows: Figure 1 As shown by arrow X, the length direction of the receiving groove 111 can be understood as the circumferential direction of the semi-annular groove 110. The roller of the pipe fitting 150 is parallel to the width direction of the receiving groove 111, so that the pressure body 200 can rotate along the length direction in the receiving groove 111.

[0037] Furthermore, the connector 130 can be a long stud, and the locking member 140 can be a lock nut. The two semi-annular grooves 110 can be connected by the long stud to achieve a hinged connection. A pipe fitting 150 can be fitted onto the middle part of the long stud, such as the part inside the receiving groove 111. The two ends of the long stud located outside the receiving groove 111 can be secured with lock nuts to prevent loosening. It is understood that the lifting fixture 100 can also include washers, which are fitted onto both ends of the long stud, located between the lock nut and the semi-annular groove 110, to further improve the tightening effect of the lock nut. The pipe fitting 150 can be a stainless steel pipe fitting 150, which has advantages such as corrosion resistance, high strength, and high temperature resistance, and can meet the assembly conditions of hydraulic fastening of the connecting rod bolts of the pressure body 200 and the large reciprocating compressor.

[0038] In a specific embodiment, the lifting fixture 100 has a semi-open structure, which can be used to lift various specifications of pressure bodies 200. After lifting, the two semi-annular grooves 110 semi-automatically tighten to lock the pressure body 200. The main body of the lifting fixture 100 can be two semi-circular stainless steel plate grooves with a radius of 150mm and an arc of approximately 150°. The two semi-annular grooves 110 are connected by a self-made M8x110mm long stud. The part of the long stud located inside the receiving groove 111 has a stainless steel tube with a diameter of approximately 12mm and a length of approximately 80mm fitted in the middle of the long stud. The two ends of the long stud located outside the receiving groove 111 are secured by washers and locking nuts to prevent the long stud from loosening and falling off. Relying on the arc of the two semi-annular grooves 110 themselves and the connection of the long stud, the opening and closing range of the lifting fixture 100 can reach 0°-180°. This sufficient opening and closing range can meet the lifting needs of various specifications of pressure bodies 200.

[0039] like Figure 1 As shown, in some possible embodiments provided by this utility model, the lifting fixture 100 of the pressure body 200 further includes: a rolling element 160, which is installed inside the receiving groove 111 and is rotatable relative to the semi-annular groove 110.

[0040] In this embodiment, by setting the rolling element 160, when the pressure body 200 is accommodated in the receiving groove 111 of the lifting fixture 100, after being lifted by the crane and the lifting part 120, the pressure body 200 will come into contact with the rolling element 160, so that the pressure body 200 can rotate more freely and smoothly in the receiving groove for fastening. This reduces the problem of directional and force deviation that is easily caused when manually dragging the pressure body 200, thereby reducing the risk of thread damage and improving the reliability and stability of hydraulic fastening of connecting rod bolts.

[0041] It is understood that the rolling element 160 can be disposed on one semi-annular groove 110, or the rolling element 160 can be disposed on two semi-annular grooves 110 simultaneously. Alternatively, the number of rolling elements 160 on the same semi-annular groove 110 can be one, two, or more. Figure 1 As shown, a rolling element 160 is provided on each semi-annular groove 110.

[0042] Specifically, the width direction of the receiving groove 111 can be as follows: Figure 1 As shown by arrow X, the length direction of the receiving groove 111 can be understood as the circumferential direction of the semi-annular groove 110. The roller of the rolling element 160 is parallel to the width direction of the receiving groove 111, so that the pressure body 200 can rotate along the length direction within the receiving groove 111.

[0043] In some possible embodiments provided by this utility model, the rolling element 160 includes: a mounting portion 161 and a shaft 162. The mounting portion 161 is connected to the bottom wall of the receiving groove 111. An arc-shaped structure 1611 is provided in the middle of the mounting portion 161. The arc-shaped structure 1611 is hollowly arranged between itself and the bottom wall, that is, the center of the arc-shaped structure 1611 and the center of the semi-annular groove 110 are located on both sides of the mounting portion 161. A first clearance opening 1612 is provided in the middle of the arc-shaped structure 1611. The shaft 162 is accommodated between the arc-shaped structure 1611 and the bottom wall, and at least a portion of the shaft 162 is exposed in the first clearance opening 1612. The shaft 162 is configured to be rotatable relative to the arc-shaped structure 1611. Thus, the pressure body 200, which is housed in the lifting fixture 100, can contact the shaft 162, and the shaft 162 rolls relative to the mounting part 161, allowing the pressure body 200 to rotate and be secured more freely and smoothly within the receiving groove 111.

[0044] The mounting part 161 can be a sheet-like structure, such as a locking piece, to facilitate the formation of an arc-shaped structure 1611. Specifically, the mounting part 161 can be fixed to the inner bottom wall of the receiving groove 111 of the semi-annular groove 110 by a fastener, which can be a rivet, adhesive, or other structure.

[0045] The shaft 162 can be a hollow tube or a solid roller. Hollow tubes are less expensive, which helps reduce the manufacturing cost of the lifting fixture 100. Solid rollers have higher reliability, which helps extend the service life of the lifting fixture 100.

[0046] like Figure 1 As shown, in some possible embodiments provided by this utility model, the height of the arc-shaped structure 1611 is equal to the diameter of the shaft 162, and the radius of the arc-shaped structure 1611 is equal to the radius of the shaft 162.

[0047] The height of the arc-shaped structure 1611 can be understood as the inner height of the arc-shaped structure 1611, that is, the distance between the arc-shaped structure 1611 and the inner bottom wall of the receiving groove 111. By making the height of the arc-shaped structure 1611 equal to the diameter of the shaft 162 and the radius of the arc-shaped structure 1611 equal to the radius of the shaft 162, the shaft 162 can be reliably and closely accommodated between the arc-shaped structure 1611 and the inner bottom wall of the receiving groove 111. At the same time, the shaft 162 exposed in the first clearance opening 1612 can roll relative to the mounting part 161 under frictional force.

[0048] In a specific embodiment, the rolling element 160 is composed of a stainless steel tube with a diameter of approximately 12 mm and a length of approximately 50 mm, a locking plate, and rivets. The locking plate is a structure similar to a pin hole. It is made by cutting a 52 mm wide and 12 mm long section out of the middle of a stainless steel plate with a width of approximately 40 mm and a length of approximately 80 mm, and then bending it into an arc structure with a radius of 6 mm and a height of 12 mm. The stainless steel tube is then fastened into the arc. The arc at both ends of the locking plate is pressed down to be lower than the exposed part of the steel tube. The locking plate is anchored to the semi-annular groove 110 with four rivets. The exposed part of the steel tube rolls relative to the locking plate, thus forming a rolling element 160 that can rotate freely.

[0049] like Figure 1 As shown, in some possible embodiments provided by this utility model, the semi-annular groove 110 includes a base plate 112 and side plates 113 located on both sides of the base plate 112. The base plate 112 and the side plates 113 together form a receiving groove 111 with openings at both ends. The base plate 112 and the side plates 113 can be connected by welding, which is easy to implement and has low cost.

[0050] Specifically, the base plate 112 and the side plate 113 can be plate-like structures made of steel plates or other materials that meet the requirements. The base plate 112 can be understood as the bottom wall of the receiving groove 111, and the side plate 113 can be understood as the side wall of the receiving groove 111.

[0051] In the above embodiment, the width of the base plate 112 is 70mm to 90mm. The width of the base plate 112 can be understood as the dimension in the width direction of the semi-annular groove 110. The width of the base plate 112 can be any dimension between 70mm, 75mm, 80mm, 85mm, 90mm, or 70mm to 90mm. By reasonably setting the width of the base plate 112, sufficient space is provided within the receiving groove 111 to meet the assembly and disassembly requirements of the pressure body 200.

[0052] In the above embodiment, the height of the side plate 113 is 25mm to 35mm, wherein the height direction of the side plate 113 is parallel to the radial direction of the semi-annular groove 110. The height of the side plate 113 can be any size between 25mm, 28mm, 30mm, 32mm, 35mm, or 25mm to 35mm. By reasonably setting the height of the side plate 113, the side plate 113 can effectively fix the pressure body 200, preventing the pressure body 200 from tipping over and falling off during the hoisting process, thereby improving the safety and reliability of the hoisting fixture 100.

[0053] In the above embodiments, the thickness of the base plate 112 and / or the side plate 113 is 1mm to 3mm, making the lifting fixture 100 lightweight and easy to move and operate while ensuring good reliability. Specifically, the thickness of the base plate 112 and the side plate 113 can be the same or different. The thickness of the base plate 112 can be any size between 1mm, 1.5mm, 2mm, 2.5mm, 3mm, or 1mm to 3mm; the thickness of the side plate 113 can be any size between 1mm, 1.5mm, 2mm, 2.5mm, 3mm, or 1mm to 3mm. The base plate 112 and the side plate 113 are made of stainless steel, which has advantages such as corrosion resistance, high strength, and high temperature resistance, and can meet the assembly conditions of hydraulically tightening the connecting rod bolts of a large reciprocating compressor using the pressure body 200. It is understood that the base plate 112 and the side plate 113 can also be made of other materials.

[0054] In a specific example, the bottom plate 112 and side plates 113 of the semi-annular groove 110 are made of 2mm thick stainless steel plates, which are welded together to form a groove structure. The bottom plate 112 is 80mm wide, and the two side plates 113 are 30mm high, with rounded edges and a smooth finish after welding. The height of the side plates 113 of the semi-annular groove 110 is appropriate, effectively securing the pressure body 200 and preventing it from tipping over or falling during hoisting. The width of the bottom plate 112 of the semi-annular groove 110 is appropriate, providing sufficient space for the interior of the trough 111 to meet the needs of disassembly and assembly of the pressure body 200.

[0055] like Figure 1 As shown, in some possible embodiments provided by this utility model, the bottom wall of the receiving groove 111 is provided with a second clearance opening 114 at the first end, and the two ends of the hoisting part 120 are distributed on both sides of the second clearance opening 114 and are movably connected to the side wall of the receiving groove 111.

[0056] The two ends of the lifting part 120 are distributed on both sides of the second clearance opening 114. The second clearance opening 114 can avoid the crane hook, so that the crane hook can be conveniently and quickly connected to the lifting part 120, reducing the possibility of the hook damaging the lifting fixture 100 and improving the service life of the lifting fixture 100.

[0057] The hoisting part 120 is movably connected to the bottom wall of the receiving groove 111, so that the hoisting part 120 is movably connected to the semi-annular groove 110. Thus, without moving the position of the semi-annular groove 110, the hoisting part 120 can be conveniently connected to the hook, which is convenient to operate and can save labor.

[0058] like Figure 1 As shown, in some possible embodiments provided by this utility model, the bottom wall of the semi-annular groove 110 has through holes 115 on both sides of the second clearance opening 114. The end of the lifting part 120 passes through the through holes 115 and contacts part of the lifting part 120 to form an annular structure 121. The annular structure 121 is rotatable relative to the semi-annular groove 110. Thus, by utilizing the annular structure 121 formed by the lifting part 120 itself, the movable connection between the lifting part 120 and the semi-annular groove 110 can be achieved, simplifying the connection structure and saving manufacturing costs. At the same time, the annular structure 121 reduces the risk of the lifting part 120 and the semi-annular groove 110 separating, ensuring the reliability of their movable connection.

[0059] like Figure 1As shown, in some possible embodiments provided by this utility model, the second clearance opening 114 is U-shaped. The U-shaped second clearance opening 114 is easy to process, not easily deformed, and helps to ensure the good strength of the lifting fixture 100. Specifically, the dimension of the second clearance opening 114 along the length direction of the semi-annular groove 110 is 60mm to 80mm, and the dimension of the second clearance opening 114 along the width direction of the semi-annular groove 110 is 15mm to 30mm. By reasonably setting the dimensions of the second clearance opening 114, it is possible to better and more safely avoid the crane hook. Specifically, the dimension of the second clearance opening 114 along the length direction of the semi-annular groove 110 can be any dimension between 60mm, 65mm, 70mm, 75mm, 80mm, or 60mm to 80mm. The second clearance 114 can have a dimension of 15mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, or any dimension between 15mm and 30mm along the width direction of the semi-annular groove 110.

[0060] In some possible embodiments provided by this utility model, the diameter of the through hole 115 is 7mm to 9mm, which ensures good strength of the lifting fixture 100 while ensuring that the end of the lifting part 120 can pass smoothly through the through hole 115. Specifically, the diameter of the through hole 115 can be any size of 7mm, 7.5mm, 8mm, 8.5mm, 9mm, or between 7mm and 9mm.

[0061] In some possible embodiments provided by this utility model, the lifting part 120 is made of steel wire with a diameter of 4mm to 6mm, which can pass smoothly through the through hole 115 while ensuring that the steel wire has sufficient strength. Specifically, the diameter of the steel wire can be any size between 4mm, 4.5mm, 5mm, 5.5mm, 6mm, or 4mm to 6mm.

[0062] In some possible embodiments provided by this utility model, the diameter of the annular structure 121 is 15mm to 25mm, so that the interior of the annular structure 121 has sufficient space to move relative to the semi-annular groove 110, ensuring that the lifting part 120 and the semi-annular groove 110 can be flexibly connected, reducing the risk of the lifting part 120 and the semi-annular groove 110 separating, and ensuring the reliability of their connection. Specifically, the diameter of the annular structure 121 can be any size between 15mm, 18mm, 20mm, 22mm, 35mm, or 15mm to 25mm.

[0063] In a specific embodiment, the lifting part 120 is a lifting lug. After cutting off a U-shaped second clearance opening 114 with a width of about 20mm and a length of about 70mm from the bottom wall of the first end of each of the two semi-annular grooves 110, two lifting lugs are symmetrically arranged at the first end of the two semi-annular grooves 110. Two through holes 115 with a diameter of 8mm are opened on both sides of the U-shaped second clearance opening 114 at the first end of the semi-annular groove 110. A U-shaped lifting lug made of stainless steel wire with a diameter of 5mm is installed. The end of the lifting lug passes through the through hole 115 and is bent into a ring structure 121 with a diameter of about 20mm and then closed and locked, so that the two lifting lugs can move freely in the radial direction, but cannot open or fall off.

[0064] The lifting fixture 100 provided in this embodiment of the utility model makes full use of the crane and the lifting fixture to lift the pressure body 200. It changes the operation of the pressure body that relies entirely on manual labor in related technologies. It not only reduces the amount of manual labor, but also greatly improves the safety of operation. It can also improve the assembly efficiency of the connecting rod bolts of large reciprocating compressors and is suitable for widespread application.

[0065] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0066] In the description of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this utility model, 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.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting fixture for a pressure body, said pressure body being used to install connecting rod bolts of a large reciprocating compressor, characterized in that, The hoisting fixture includes: The system includes two semi-annular grooves and a lifting unit. The lifting unit is connected to the first end of each semi-annular groove, and the second ends of the two semi-annular grooves are movably connected to each other so that the two semi-annular grooves are configured as a semi-open structure. Each semi-annular groove has a receiving groove on the side facing the center, and the receiving grooves of the two semi-annular grooves are connected to each other to accommodate the pressure body.

2. The lifting fixture for the pressure body according to claim 1, characterized in that, Also includes: A connector, which passes through the sidewalls of the second ends of the two semi-annular grooves to hinge the two semi-annular grooves; A locking member, located outside the receiving groove, is used to connect with the connector and the semi-annular groove to limit the movement of the connector relative to the semi-annular groove. A fitting located inside the receiving groove and sleeved on the outside of the connector, the fitting being configured to roll relative to the connector.

3. The lifting fixture for the pressure body according to claim 1, characterized in that, Also includes: A rolling element is installed inside the receiving groove and is rotatable relative to the semi-annular groove.

4. The lifting fixture for the pressure body according to claim 3, characterized in that, The rolling element includes: The mounting part is connected to the bottom wall of the receiving groove. The mounting part has an arc-shaped structure in the middle, and the arc-shaped structure is hollow between itself and the bottom wall. The arc-shaped structure has a first clearance opening in the middle. A shaft member, which is housed between the arcuate structure and the bottom wall, with at least a portion of the shaft member exposed to the first clearance opening, and the shaft member configured to be rollable relative to the arcuate structure.

5. The lifting fixture for the pressure body according to claim 4, characterized in that, The height of the arc-shaped structure is equal to the diameter of the shaft, and the radius of the arc-shaped structure is equal to the radius of the shaft.

6. The lifting fixture for the pressure body according to claim 1, characterized in that, The opening angle of the two semi-annular grooves ranges from 0° to 180°; and / or The radius of the semi-annular groove is 130 mm to 170 mm; and / or The arc of the semi-annular groove is 140° to 160°; and / or The semi-annular groove is made of stainless steel.

7. The lifting fixture for the pressure body according to claim 1, characterized in that, The semi-annular groove includes a bottom plate and side plates located on both sides of the bottom plate, the bottom plate and the side plates together forming the receiving groove with openings at both ends; The base plate has a width of 70mm to 90mm, the side plate has a height of 25mm to 35mm, and the base plate and / or the side plate has a thickness of 1mm to 3mm.

8. The lifting fixture for the pressure body according to claim 1, characterized in that, The bottom wall of the receiving tank has a second clearance opening at the first end, and the two ends of the hoisting part are distributed on both sides of the second clearance opening and are movably connected to the bottom wall of the receiving tank.

9. The lifting fixture for the pressure body according to claim 8, characterized in that, The bottom wall of the receiving groove has through holes on both sides of the second clearance opening. The end of the hoisting part passes through the through holes and contacts part of the hoisting part to form a ring structure. The ring structure is rotatable relative to the semi-annular groove.

10. The lifting fixture for the pressure body according to claim 9, characterized in that, The second clearance is U-shaped, with a length of 60mm to 80mm along the length of the semi-annular groove and a width of 15mm to 30mm along the width of the semi-annular groove; and / or The diameter of the through hole is 7 mm to 9 mm; and / or The lifting device is made of steel wire with a diameter of 4mm to 6mm; and / or The diameter of the ring structure is 15 mm to 25 mm.

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