An assembly system for a cubic press

Abstract

The application relates to a kind of assembly system of cubic press for the production technology field of cubic press, for the assembly of working cylinder interference fit in the bottom of hinge beam inner cavity, including the bottom of upper end open and hollow inside guide frame, the coil of the bottom inner cavity upper section is coaxial with it;The bottom of the guide frame is provided with the ear piece of the hinge beam to be assembled, so that the ear piece of the hinge beam to be assembled is coaxially located below the hanging structure of the guide frame.The application can utilize the characteristics that the ear hole precision of the ear piece of the hinge beam is high, the ear piece of the hinge beam to be assembled is hung by the hanging structure, so that the hinge beam to be assembled is coaxial with the guide frame, then during the assembly of the working cylinder to be assembled, the working cylinder to be assembled is axially rolled by rolling assembly, so that the working cylinder to be assembled will not produce radial deviation, ensure that the working cylinder to be assembled is coaxial with the hinge beam to be assembled, ensure that the working cylinder to be assembled is coaxially assembled in the hinge beam to be assembled.

Description

TECHNICAL FIELD

[0001] The present application relates to the production technology field of cubic press, in particular to a kind of assembly system for cubic press. BACKGROUND

[0002] It is known that artificial superhard material is synthesized by cubic press under high temperature and high pressure environment;The assembly of working cylinder and hinge beam of cubic press is the most important step in manufacturing cubic press, which is directly related to the performance of cubic press;Due to the huge size of cubic press, the traditional clearance fit is used between the working cylinder and the hinge beam of cubic press, the sealing cover is directly connected with the hinge beam, and the working cylinder is pressed and limited by the sealing cover;However, this assembly method has the following defects: 1, the sealing cover and the working cylinder are indirectly connected, and the coaxiality between them cannot be well guaranteed, which can easily cause the piston to be pulled between the sealing cover and the working cylinder during movement, and also is not conducive to ensuring the precision of cubic press;2, the sealing between the sealing cover and the hinge beam, and the working cylinder and the hinge beam needs to be guaranteed at the same time, otherwise oil leakage may occur.

[0003] Therefore, we provide an assembly system for cubic press. SUMMARY

[0004] The purpose of the present application is to provide an assembly system for cubic press to solve the above problems.

[0005] The present application achieves the above-mentioned purposes by the following technical solutions:

[0006] An assembly system for cubic press, comprising a base with an open upper end and a hollow interior, and a guide frame, the upper portion of the inner cavity of the base is provided with a coil coaxial therewith;The bottom of the guide frame is provided with a hanging structure capable of correspondingly suspending the ear piece of the hinge beam to be assembled, so that the hinge beam to be assembled is coaxially located below the guide frame;The hanging structure can be detachably fitted to the top of the base, so that the assembly part of the hinge beam to be assembled is stably suspended inside the coil, so that the coil can heat the assembly part of the hinge beam to be assembled, so that the assembly part of the hinge beam to be assembled expands after being heated, facilitating the insertion of the working cylinder;The inner side of the guide frame is provided with a rolling assembly for axially rolling the outer wall of the working cylinder to be assembled, so that the working cylinder to be assembled is coaxial with the hinge beam to be assembled.

[0007] Preferably, the hanging structure comprises two or four lifting lugs and a plug rod uniformly and evenly spaced around the guide frame, the upper end of the lifting lug is correspondingly fixed to the guide frame, and the lower end has a lifting hole penetrating the guide frame tangentially, the plug rod is coaxially and slidingly inserted through the lifting hole and the ear hole of the ear piece of the hinge beam to be assembled on the same side, so that the hinge beam to be assembled is coaxially located below the guide frame;The plug rod can be detachably fitted to the top of the base at both ends.

[0008] Preferably, the rolling assembly comprises at least two roller groups which are uniformly and circumferentially spaced along the guide frame, each roller group comprises two rollers which are vertically spaced and capable of simultaneously axially rolling the outer wall of the work cylinder to be assembled, and the roller shafts are rotatably connected to the inner side of the guide frame; and the roller bodies are provided with a rolling groove with a diameter not greater than the outer diameter of the work cylinder to be assembled.

[0009] Preferably, the diameter of the rolling groove is the same as the outer diameter of the work cylinder to be assembled.

[0010] Preferably, the rolling assembly comprises at least three roller groups which are uniformly and circumferentially spaced along the guide frame, and each roller group comprises two rollers which are vertically spaced and capable of simultaneously axially rolling the outer wall of the work cylinder to be assembled, and the roller shafts are rotatably connected to the inner side of the guide frame.

[0011] Preferably, the guide frame is a rectangular frame or a square frame, and the roller groups are located at the corners of the guide frame.

[0012] Preferably, the top of the guide frame is provided with an ear plate for hoisting.

[0013] Preferably, the base comprises a bottom plate which is provided with four support columns along the circumference thereof, and the top of each support column is provided with a support portion for supporting the hanging structure, and the periphery of the four support portions is provided with a surrounding plate, and the upper section of the inner cavity of the surrounding plate is provided with the coil, and the support columns are located outside the coil.

[0014] A method for using an assembly system for a cubic press, comprising the following steps:

[0015] Step one: lift the guide frame above the hinge beams to be assembled by means of lifting equipment, so that the lifting hole of the lifting lug is coaxial with the ear hole of the hinge beam ear to be assembled on the same side, and then insert the plug rod into the coaxial lifting hole and the ear hole of the hinge beam ear to be assembled, repeat the above operation until all the ear holes of the hinge beam ear to be assembled are inserted with the plug rod;

[0016] Step two: lift the guide frame above the base by means of lifting equipment, then lower it, and support the plug rod on the top surface of the support column of the base, at this time the hinge beam to be assembled is suspended inside the base, and the bottom of the hinge beam to be assembled is located inside the coil;

[0017] Step three: heat the bottom of the hinge beam to be assembled by the coil through the high-frequency machine until the diameter of the assembled part of the hinge beam to be assembled is greater than the diameter of the work cylinder to be assembled, and keep warm;

[0018] Step four: the to-be-assembled working cylinder is lifted to the above of the guide frame by the lifting device, and the outer wall of the to-be-assembled working cylinder is lubricated, then the to-be-assembled working cylinder is lowered, when the to-be-assembled working cylinder passes the inner side of the guide frame, the to-be-assembled working cylinder is limited by the rollers, so that the to-be-assembled working cylinder is coaxial with the to-be-assembled hinged beam, until the to-be-assembled working cylinder is lowered to the to-be-assembled hinged beam assembly part.

[0019] Beneficial effects are that:

[0020] 1. The to-be-assembled hinged beam assembly part can be heated by the coil, so that the temperature of the outer side of the to-be-assembled hinged beam assembly part is greater than that of the inner side, thus the inner diameter of the to-be-assembled hinged beam assembly part is greater than the outer diameter of the to-be-assembled working cylinder, and the to-be-assembled working cylinder is conveniently assembled to the inner side of the to-be-assembled hinged beam assembly part;

[0021] 2. The to-be-assembled hinged beam ear is hung by the hanging structure by using the high precision of the ear hole of the hinged beam ear, so that the to-be-assembled hinged beam is coaxial with the guide frame, then the to-be-assembled working cylinder is axially rolled by the rolling assembly during the assembly of the to-be-assembled working cylinder, so that the to-be-assembled working cylinder does not produce radial deviation, the to-be-assembled working cylinder is coaxial with the to-be-assembled hinged beam, and the to-be-assembled working cylinder is coaxially assembled to the to-be-assembled hinged beam;

[0022] 3. The use method of the assembly system is simple, the skill requirement of workers is low, and the workers can quickly master the use method.

[0023] Additional technical features and advantages of the present application will be more apparent from the following description, or will be understood by those skilled in the art through the specific implementation of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the following specific embodiments, but do not constitute a limitation to the present application. In the drawings:

[0025] Figure 1 is a structural schematic diagram of the present application;

[0026] Figure 2 is a structural schematic diagram of the base in the present application

[0027] Figure 3 is a structural schematic diagram of the guide frame in the present application;

[0028] Figure 4 is a top view of the guide frame in the present application;

[0029] Figure 5 is a structural schematic diagram of the guide frame in the present application in the state of hanging the hinged beam;

[0030] Figure 6 is a structural schematic diagram in a use state of the present application.

[0031] Reference signs are explained as follows:

[0032] 1, base; 11, bottom plate; 12, support column; 121, support part; 13, coaming; 2, guide frame; 21, hanging structure; 211, lifting lug; 212, insertion rod; 213, lifting hole; 22, rolling assembly; 221, roller set; 2211, roller; 2212, rolling groove; 23, ear plate; 3, coil. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0035] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the present application, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature therebetween. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0040] As shown in Figures 1-6 A kind of assembly system for six-face top press, for the interference fit of working cylinder is assembled in the bottom of hinge beam inner cavity, including base 1 and guiding frame 2 with open upper end and hollow interior, the upper section of the inner cavity of base 1 is provided with coil 3 coaxial with it, it needs to be noted that coil 3 needs to be connected with high frequency machine when in use;Guiding frame 2 bottom is provided with the structure 21 of hanging to be assembled hinge beam lug piece capable of corresponding suspension, so that to-be-assembled hinge beam is coaxially located below guiding frame 2;The structure 21 of hanging is detachably fitted in the top of base 1, so that to-be-assembled hinge beam assembly part is stably suspended in the inside of coil 3, to facilitate coil 3 to heat to-be-assembled hinge beam assembly part, so that to-be-assembled hinge beam assembly part is expanded after being heated, to facilitate the insertion of working cylinder;Guiding frame 2 inside is provided with rolling assembly 22 for axially rolling the outer wall of to-be-assembled working cylinder, so that to-be-assembled working cylinder is coaxially rolled with to-be-assembled hinge beam.

[0041] Further, as shown in Figure 3 In order to facilitate lifting guiding frame 2, guiding frame 2 top is provided with lug plate 23 for hoisting.

[0042] In this way, the coil 3 can heat the to-be-assembled hinge beam assembly part, so that the temperature of the outer side of the to-be-assembled hinge beam assembly part is greater than that of the inner side, and thus the inner diameter of the to-be-assembled hinge beam assembly part is increased to be greater than the outer diameter of the to-be-assembled working cylinder, and the to-be-assembled working cylinder is conveniently assembled to the inner side of the to-be-assembled hinge beam assembly part;

[0043] By virtue of the high accuracy of the hinge beam lug hole, the to-be-assembled hinge beam lug is hung by the hanging structure 21, so that the to-be-assembled hinge beam is coaxial with the guide frame 2, and then the to-be-assembled working cylinder is axially rolled by the rolling assembly 22 during assembly of the to-be-assembled working cylinder, so that the to-be-assembled working cylinder does not deviate radially, and the coaxiality of the to-be-assembled working cylinder and the to-be-assembled hinge beam is ensured, and the to-be-assembled working cylinder is coaxially assembled to the to-be-assembled hinge beam.

[0044] In some embodiments, as shown in Figures 3-5 The hanging structure 21 comprises four lifting lugs 211 and a plug rod 212 which are uniformly and circumferentially arranged in a ring around the guide frame 2. The upper end of the lifting lug 211 is fixed to the guide frame 2, and the lower end has a lifting hole 213 which penetrates the guide frame 2 tangentially. The plug rod 212 coaxially and slidingly penetrates the lifting hole 213 and the lug hole of the to-be-assembled hinge beam lug on the same side, so that the to-be-assembled hinge beam is coaxially located below the guide frame 2. The two ends of the plug rod 212 can be detachably fitted to the top of the base 11.

[0045] In other embodiments, the number of lifting lugs 211 can also be two.

[0046] In use, the guide frame 2 can be lifted by other equipment, so that the lifting hole 213 is coaxial with the lug hole of the to-be-assembled hinge beam lug on the same side, and then the plug rod 212 penetrates the lifting hole 213 and the lug hole of the to-be-assembled hinge beam lug. By virtue of the high accuracy between the lug hole of the hinge beam lug and the inner cylinder of the hinge beam, the coaxiality of the to-be-assembled hinge beam and the guide frame 2 is ensured. At this time, the plug rod 212 is placed on the top of the base 1, so that the to-be-assembled hinge beam assembly part is located on the inner side of the coil 3 in the inner cavity of the base 1, facilitating heating of the to-be-assembled hinge beam assembly part by the coil 3. Since the lug hole of the hinge beam lug is located on the outer side of the opening end of the hinge beam, the lug hole of the hinge beam lug is not heated when the to-be-assembled hinge beam assembly part is heated, so that the lug hole of the hinge beam lug does not expand, and thus the coaxiality of the to-be-assembled hinge beam and the guide frame 2 is not affected.

[0047] In some embodiments, as shown in Figures 3-5 The rolling assembly 22 comprises at least two roller sets 221 which are uniformly and circumferentially arranged in a ring around the guide frame 2. The roller set 221 comprises two rollers 2211 which are arranged in an upper and lower relationship and can simultaneously axially roll the outer wall of the to-be-assembled working cylinder, and the roller shaft of the roller 2211 is rotationally connected to the inner side of the guide frame 2.

[0048] When the roller set 221 has two, the roller 2211 has a roller groove 2212 in the middle of the roller body, and the diameter of the roller groove 2212 is not greater than the outer diameter of the work cylinder to be assembled;

[0049] According to the needs, the cross section of the roller groove 2212 can be arc-shaped or V-shaped, which can have two contact points with the outer wall of the work cylinder to be assembled;

[0050] Preferably, the diameter of the roller groove 2212 is the same as the outer diameter of the work cylinder to be assembled.

[0051] When the roller set 221 has three or more, the roller 2211 can not have a roller groove 2212.

[0052] Further, the guide frame 2 is a rectangular frame or a square frame, and the roller set 221 is located on the edge of the guide frame 2.

[0053] In this way, since the same height roller 2211 has at least three contact points with the outer wall of the work cylinder to be assembled, the position of the work cylinder to be assembled at the same height will not be radially offset; since the roller 2211 exists at different heights, the overall radial offset of the work cylinder to be assembled is different, that is, the work cylinder to be assembled is always coaxial with the guide frame 2, thereby ensuring that the assembled work cylinder is coaxial with the work cylinder to be assembled. The hinge beam to be assembled, and finally the assembled work cylinder is coaxially assembled on the hinge beam to be assembled.

[0054] In some embodiments, as shown in Figure 2 The base 1 includes a bottom plate 11, four support columns 12 are arranged on the circumference of the bottom plate 11, and support portions 121 for supporting the hanging structure 21 are arranged on the top of the support columns 12. The outer periphery of the four support portions 121 is provided with a surrounding plate 13, the upper segment of the inner cavity of the surrounding plate 13 is provided with a coil 3, and the support columns 12 are located on the outer side of the coil 3.

[0055] According to the needs, the support portion 121 can be a containing groove for containing the end of the plug rod 212.

[0056] Further, when the support portion 121 at the corresponding position of the plug rod 212 is in place, the hinge beam to be assembled is in a suspended state, that is, the hinge beam to be assembled is not in contact with the bottom plate 11, which can prevent the plug rod 212 from being stable relative to the support portion 121 due to the low precision of the closed end, affecting the stability during the assembly process.

[0057] A method for using a six-surface top press assembly system, characterized by comprising the following steps:

[0058] Step one: lift the guide frame 2 to the top of the hinge beam to be assembled by the lifting device, so that the lifting hole 213 of the lifting lug 211 is coaxial with the ear hole of the hinge beam ear to be assembled, and then the plug rod 212 is inserted into the coaxial lifting hole 213 and the ear hole of the hinge beam ear to be assembled, and the above operation is repeated until all the ear holes of the hinge beam ear to be assembled are inserted with the plug rod 212;

[0059] Step two: lift the guide frame 2 to the top of the base 1 by the lifting device, and then lower it to support the plug rod 212 on the top surface of the support column 12 of the base 1, at this time the hinge beam to be assembled is suspended inside the base 1, and the bottom of the hinge beam to be assembled is inside the coil 3;

[0060] Step three: heat the bottom of the hinge beam to be assembled by the coil 3, until the diameter of the assembled part of the hinge beam to be assembled is greater than the diameter of the working cylinder to be assembled, and keep warm;

[0061] Step four: lift the working cylinder to be assembled to the top of the guide frame 2 by the lifting device, lubricate the outer wall of the working cylinder to be assembled, and then make the working cylinder to be assembled drop, when the working cylinder to be assembled passes through the inside of the guide frame 2, the working cylinder to be assembled is limited by the roller 2211, so that the working cylinder to be assembled is coaxial with the hinge beam to be assembled, until the working cylinder to be assembled drops to the assembled part of the hinge beam to be assembled.

[0062] Further, the above lubricating treatment is to spray lubricating oil to the outer wall of the working cylinder to be assembled.

[0063] Further, the sealing cover is coaxially assembled to the open end of the working cylinder before the hinge beam to be assembled is cooled.

[0064] According to the need, the sealing cover can also be assembled to the open end of the working cylinder between the assembly of the working cylinder and the hinge beam.

[0065] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An assembly system for a six-sided top press, characterized in that: The assembly for interference fit of the working cylinder to the bottom of the hinge beam cavity includes a base (1) with an open top and a hollow interior and a guide frame (2). The upper section of the inner cavity of the base (1) is provided with a coil (3) coaxial with it. The bottom of the guide frame (2) is provided with a hanging structure (21) that can correspondingly suspend the hinge beam ear to be assembled, so that the hinge beam to be assembled is coaxially located below the guide frame (2). The hanging structure (21) is detachably fitted to the top of the base (1), so that the assembly part of the hinge beam to be assembled is stably suspended inside the coil (3), so that the coil (3) can heat the assembly part of the hinge beam to be assembled, so that the assembly part of the hinge beam to be assembled expands in diameter after being heated, making it easier to insert the working cylinder. The inner side of the guide frame (2) is provided with a rolling assembly (22) that axially rolls the outer wall of the working cylinder to be assembled, so that the working cylinder to be assembled is coaxial with the hinge beam to be assembled. The hanging structure (21) includes two or four lugs (211) and insert rods (212) evenly spaced around the guide frame (2). The upper end of the lug (211) is fixed to the guide frame (2), and the lower end has a lug hole (213) that passes through the guide frame (2) tangentially. The insert rod (212) slides coaxially through the lug hole (213) and the lug hole of the hinge beam to be assembled on the same side, so that the hinge beam to be assembled is coaxially located below the guide frame (2). Both ends of the insert rod (212) can be detachably fitted to the top of the base (1). The rolling assembly (22) includes at least two roller groups (221) evenly spaced around the guide frame (2). Each roller group (221) includes two rollers (2211) spaced vertically and capable of simultaneously rolling the outer wall of the working cylinder to be assembled axially. The roller (2211) is rotatably connected to the inner side of the guide frame (2). The roller (2211) has a groove (2212) with a diameter not greater than the outer diameter of the working cylinder to be assembled in the middle of its body.

2. The assembly system for a six-sided top press according to claim 1, characterized in that: The diameter of the groove (2212) is the same as the outer diameter of the working cylinder to be assembled.

3. The assembly system for a six-sided top press according to claim 1, characterized in that: The rolling assembly (22) includes at least three roller groups (221) evenly spaced around the guide frame (2), and the roller group (221) includes two rollers (2211) spaced vertically and capable of simultaneously rolling the outer wall of the working cylinder to be assembled axially, and the roller (2211) axle is rotatably connected to the inner side of the guide frame (2).

4. An assembly system for a six-sided top press according to claim 1 or 3, characterized in that: The guide frame (2) is a rectangular frame or a square frame, and the roller assembly (221) is located on the inner edge of the guide frame (2).

5. The assembly system for a six-sided top press according to claim 1, characterized in that: The top of the guide frame (2) is provided with an ear plate (23) for easy lifting.

6. The assembly system for a six-sided top press according to claim 1, characterized in that: The base (1) includes a base plate (11), the base plate (11) is provided with four support columns (12) along its circumference, and the top of the support column (12) is provided with a support part (121) for supporting the hanging structure (21). The four support parts (121) are surrounded by a surrounding plate (13), and the upper part of the inner cavity of the surrounding plate (13) is provided with the coil (3), and the support column (12) is located on the outside of the coil (3).

7. A method of using the assembly system for the six-sided top press as described in claim 6, characterized in that: Includes the following steps: Step 1: Use a lifting device to lift and move the guide frame (2) above the hinge beam to be assembled, so that the lifting hole (213) of the lifting lug (211) is coaxial with the lug hole of the hinge beam to be assembled on the same side. Then use the insert rod (212) to insert the lifting hole (213) and the lug hole of the hinge beam to be assembled on the same axis. Repeat the above action until all the lug holes of the hinge beam to be assembled are connected with the insert rod (212). Step 2: Using a lifting device, lift the guide frame (2) and move it above the base (1), then lower it to support the insertion rod (212) on the top surface of the support column (12) of the base (1). At this time, the hinge beam to be assembled is suspended inside the base (1), and the bottom of the hinge beam to be assembled is located inside the coil (3). Step 3: Use a high-frequency machine to heat the bottom of the hinge beam to be assembled by coil (3) until the diameter of the assembly part of the hinge beam to be assembled is larger than the diameter of the working cylinder to be assembled, and keep it warm. Step 4: Use the lifting equipment to lift the work cylinder to be assembled above the guide frame (2) and lubricate the outer wall of the work cylinder to be assembled. Then lower the work cylinder to be assembled. When the work cylinder to be assembled passes the inner side of the guide frame (2), the work cylinder to be assembled is restricted by the roller (2211), so that the work cylinder to be assembled is coaxial with the hinge beam to be assembled, until the work cylinder to be assembled is lowered to the assembly part of the hinge beam to be assembled.

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