Joint connecting assembly, standard knot device and tower crane

Abstract

The utility model discloses a joint connecting assembly, a standard knot device and a tower crane, the joint connecting assembly comprises a female joint piece and a male joint connecting assembly, a first pin hole is formed in the peripheral wall of a first sleeving space of the female joint piece, a male joint piece of the male joint connecting assembly can extend into the first sleeving space, and a second pin hole is formed in the peripheral wall of a second sleeving space of the male joint piece. A shaft shoulder part abutting against the periphery of an inlet of the first sleeving space is further formed on the male connector piece, a second pin hole communicating with the first pin hole is formed in the male connector piece so that the connecting pin shaft can sequentially penetrate through and be connected in series, one of the two pin holes makes contact with the connecting pin shaft in the whole circumferential direction, and the other pin hole makes contact with the other pin hole in the whole circumferential direction. The tension acting side wall of the other one of the two pin holes is in contact with the connecting pin shaft, a neutral gear is formed between the opposite enclosing side wall and the connecting pin shaft, the improved pin hole structure can enable the connecting pin shaft to be easier to assemble and disassemble, and the problem that the pin shaft is difficult to disassemble is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tower cranes, and particularly relates to a joint connection assembly, a standard section device and a tower crane. Background Art

[0002] The standard section is an important component of a tower crane, mainly used to transfer the head load to the embedded foundation. The male joint at the standard section connection extends into the female joint and is connected by a pin shaft. The load between the standard sections is all transmitted through the connection pair composed of the pin shaft and the male and female joints.

[0003] After the head load is transmitted between the standard sections, most of the load is converted into the tension and pressure of the main chords. Theoretically, the tension is borne by the pin shaft, and the pressure is borne by the end face of the main chord. The male and female joints are connected by a pin shaft, and the shaft and the hole are in a small clearance fit. The size of the fit clearance directly affects the difficulty of installing and disassembling the pin shaft and the static stiffness of the tower body. At present, the shaft-hole fit clearance is usually 0.15 - 0.25 mm, and an anti-rust lubricating grease is applied on the surface. After more than 1 year of installation, there are generally problems such as difficult disassembly of the pin shaft, drying and hardening of the anti-rust lubricating grease, and corrosion of the pin shaft. Summary of the Utility Model

[0004] Aiming at the above defects or deficiencies, the utility model provides a joint connection assembly, a standard section device and a tower crane, aiming to solve the technical problem that the pin connection of the male and female joints is difficult to disassemble.

[0005] To achieve the above object, the first aspect of the utility model provides a joint connection assembly, wherein the joint connection assembly includes:

[0006] A female joint member, which is arranged on the first main body member and forms a first set space, and a first pin hole is formed on the peripheral wall of the first set space;

[0007] A male joint connection assembly, including a male joint member and a connecting pin shaft. The male joint member is arranged on the second main body member and can extend into the first set space. An axial shoulder that abuts against the peripheral edge of the entrance of the first set space is further formed on the male joint member. A second pin hole that is in communication with the first pin hole is formed on the male joint member for the connecting pin shaft to pass through and be connected in series;

[0008] Wherein, one of the first pin hole and the second pin hole is in contact with the connecting pin shaft in the entire circumferential direction, the side wall of the other one of the first pin hole and the second pin hole that is subjected to the tensile force is in contact with the connecting pin shaft, and a clearance is formed between the opposite enclosing side wall opposite to the side wall subjected to the tensile force and the connecting pin shaft.

[0009] In an embodiment of the present utility model, the first pin hole is arranged in contact with the connecting pin shaft in the entire circumferential direction. One side wall surface of the second pin hole, which is far away from the shaft shoulder, is set as the tensile force acting side wall, and one side wall surface of the second pin hole, which is close to the shaft shoulder, is set as the opposing enclosing side wall.

[0010] In an embodiment of the present utility model, the second pin hole is arranged in contact with the connecting pin shaft in the entire circumferential direction. One side wall surface of the first pin hole, which is close to the shaft shoulder, is set as the tensile force acting side wall, and one side wall surface of the first pin hole, which is far away from the shaft shoulder, is set as the opposing enclosing side wall.

[0011] In an embodiment of the present utility model, one of the first pin hole and the second pin hole is set as a first round hole with a hole diameter consistent with the shaft diameter of the connecting pin shaft, and the other of the first pin hole and the second pin hole is set as a waist-shaped hole. Both ends of the waist-shaped hole have a first arc wall surface and a second arc wall surface arranged at relative intervals. The first arc wall surface is located on the tensile side of the waist-shaped hole and is set as the tensile force acting side wall. The first arc wall surface is arranged in parallel alignment with the first round hole, and the second arc wall surface is set as the opposing enclosing side wall and is arranged opposite to the periphery of the first round hole.

[0012] In an embodiment of the present utility model, both the first arc wall surface and the second arc wall surface are set as semi-circular wall surfaces with a diameter consistent with the shaft diameter of the connecting pin shaft. The waist-shaped hole also has a straight wall surface connecting the first arc wall surface and the second arc wall surface on the same side. The length dimension of the straight wall surface is set to be less than or equal to one-fifth of the shaft diameter of the connecting pin shaft.

[0013] In an embodiment of the present utility model, one of the first pin hole and the second pin hole is set as a first round hole with a hole diameter consistent with the shaft diameter of the connecting pin shaft, and the other of the first pin hole and the second pin hole is set as a second round hole with a hole diameter larger than the shaft diameter of the connecting pin shaft. And the tensile force acting side wall located on the tensile side in the second round hole is arranged in parallel alignment with the first round hole, and the opposing enclosing side wall in the second round hole is arranged opposite to the periphery of the first round hole.

[0014] In an embodiment of the present utility model, the hole diameter D of the second round hole ≤ d + 1 / 5d, where d is set as the shaft diameter of the connecting pin shaft.

[0015] In an embodiment of the present utility model, the male connector includes a shaft shoulder and a male connection head integrally formed with the shaft shoulder. The male connection head can extend into the first set space and is formed with a second pin hole. One end of the shaft shoulder far away from the male connection head is welded to the second main body.

[0016] In the embodiment of the present utility model, the male connector member includes a male connector body and a shaft shoulder. An end of the second main body member forms a second sleeving space that communicates with the first sleeving space, and a peripheral edge of an entrance of the second sleeving space is set as the shaft shoulder. A first end of the male connector body extends into the second sleeving space and is fixedly connected to the second main body member through a fixing pin shaft. A second end of the male connector body extends into the first sleeving space and forms a second pin hole.

[0017] In the embodiment of the present utility model, the number of the first pin holes, the second pin holes, and the connecting pin shafts are all set to be at least two. At least two first pin holes are sequentially arranged at intervals along an extending direction of the first sleeving space, and two adjacent first pin holes are arranged parallel or perpendicular to each other. The first pin holes, the second pin holes, and the connecting pin shafts are set to be in one-to-one correspondence.

[0018] In the embodiment of the present utility model, the first sleeving space is set as a cylindrical space, and a part of the male connector member extending into the first sleeving space is set as a solid cylinder.

[0019] To achieve the above object, the second aspect of the present utility model provides a standard section device. The standard section device includes the joint connection assembly described above, and the first main body member and the second main body member are respectively set as the main chords of two adjacent standard sections connected up and down.

[0020] To achieve the above object, the third aspect of the present utility model provides a tower crane. The tower crane includes the standard section device described above.

[0021] Through the above technical solutions, the joint connection assembly provided by the embodiment of the present utility model has the following beneficial effects:

[0022] When the main chord members of two adjacent standard sections connected vertically use the above-mentioned joint connection assembly, since it includes a female joint member and a male joint connection assembly, a first pin hole is formed on the peripheral wall of the first set space of the female joint member, and the male joint member of the male joint connection assembly can extend into the first set space and form an axial part that abuts against the peripheral edge of the entrance of the first set space. A second pin hole that communicates with the first pin hole is also formed on the male joint member, so that a connecting pin shaft can be sequentially inserted and connected in series. At the same time, one of the two pin holes is in contact with the connecting pin shaft in the entire circumferential direction, and the side wall of the other pin hole that is subjected to the tensile force is in contact with the connecting pin shaft, and a gap is formed between the opposite surrounding side wall opposite to the side wall subjected to the tensile force and the connecting pin shaft. Although there is a gap between one of the pin holes and the connecting pin shaft, when under pressure, the pressure is borne by the shaft shoulder, and the connecting pin shaft does not interfere. When under tension, the tensile forces on the female joint member and the male joint member can be transmitted to the connecting pin shaft, that is, the force-bearing principle of the connection pair remains unchanged. The existence of the gap can avoid the pin shaft interference problem when the main chord member is under pressure caused by machining errors, can also provide sufficient space for lubricating grease, and the improved pin hole structure can make the installation and disassembly of the connecting pin shaft easier, effectively solving the problem of difficult disassembly of the pin shaft.

[0023] Other features and advantages of the present invention will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the drawings:

[0025] Figure 1 is a schematic structural diagram of the joint connection assembly in the first embodiment of the present invention;

[0026] Figure 2 is Figure 1 a partial structural diagram of the joint connection assembly in

[0027] Figure 3 is Figure 1 a dimension marking schematic diagram of the second pin hole on the male joint member in

[0028] Figure 4 is Figure 1 a structural schematic diagram of the second pin hole on the male joint member in

[0029] Figure 5 is Figure 1Schematic diagram of the size identification of the second pin hole on the male connector part in

[0030] Figure 6 is Figure 1 Schematic diagram of the structure of the second pin hole on the male connector part in

[0031] Figure 7 Schematic diagram of the structure of the connector connection assembly according to the second embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the structure of the connector connection assembly according to the third embodiment of the present invention;

[0033] Figure 9 Schematic diagram of the structure of the connector connection assembly according to the fourth embodiment of the present invention;

[0034] Figure 10 Schematic diagram of the structure of the connector connection assembly according to the fifth embodiment of the present invention;

[0035] Figure 11 is Figure 10 Partial schematic diagram of the connector connection assembly in

[0036] Figure 12 Schematic diagram of the structure of the connector connection assembly according to the sixth embodiment of the present invention;

[0037] Figure 13 is Figure 12 Schematic diagram of the structure of the male connector part in

[0038] Explanation of reference numerals

[0039] 100 Female connector part 101 First pin hole

[0040] 102 First set space 200 Male connector part

[0041] 210 Axial shoulder 220 Male connection head

[0042] 230 Male connector body 240 Second pin hole

[0043] 241 Side wall under tensile force 242 Opposite enclosing side wall

[0044] 243 First arc wall surface 244 Second arc wall surface

[0045] 245 Straight wall surface 246 Clearance

[0046] 300 Connecting pin shaft

[0047] 400 First main body part 500 Second main body part

[0048] 501 Second set space 502 Fixed pin shaft Detailed implementation mode

[0049] The following combines the accompanying drawings to elaborate on the specific embodiments of the present utility model in detail. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0050] The joint connection assembly, standard section device, and tower crane of the present utility model will be described below with reference to the accompanying drawings.

[0051] As Figures 1 to 7 shown, the present utility model provides a joint connection assembly, wherein the joint connection assembly includes:

[0052] A female joint member 100 is provided on the first main body member 400 and forms a first set space 102, and a first pin hole 101 is formed on the peripheral wall of the first set space 102;

[0053] A male joint connection assembly includes a male joint member 200 and a connecting pin shaft 300. The male joint member 200 is provided on the second main body member 500 and can extend into the first set space 102. An axial shoulder 210 that abuts against the peripheral edge of the entrance of the first set space 102 is further formed on the male joint member 200. A second pin hole 240 that is in communication with the first pin hole 101 is formed on the male joint member 200 for the connecting pin shaft 300 to pass through and be connected in series in sequence;

[0054] Wherein, one of the first pin hole 101 and the second pin hole 240 is in contact with the connecting pin shaft 300 in the entire circumferential direction, the tensile force acting side wall 241 of the other of the first pin hole 101 and the second pin hole 240 is in contact with the connecting pin shaft 300, and a gap 246 is formed between the opposing enclosing side wall 242 opposite to the tensile force acting side wall 241 and the connecting pin shaft 300.

[0055] When the main chord rods of two adjacent standard sections connected vertically use the above-mentioned joint connection assembly, since it includes a female joint member 100 and a male joint connection assembly, a first pin hole 101 is formed on the peripheral wall of the first sleeve space 102 of the female joint member 100. The male joint member 200 of the male joint connection assembly can extend into the first sleeve space 102 and has an axial part that abuts against the peripheral edge of the entrance of the first sleeve space 102. A second pin hole 240 that communicates with the first pin hole 101 is also formed on the male joint member 200, so that the connecting pin shaft 300 can be sequentially inserted and connected in series. At the same time, one of the two pin holes is in contact with the connecting pin shaft 300 in the entire circumferential direction, and the side wall 241 under the tensile force acts in contact with the connecting pin shaft 300, and a clearance 246 is formed between the opposing surrounding side wall 242 opposite to the side wall 241 under the tensile force and the connecting pin shaft 300. Although there is a clearance 246 between one of the pin holes and the connecting pin shaft 300, when under pressure, the pressure is borne by the shaft shoulder 210 and the connecting pin shaft 300 is not interfered. When under tension, the tensile forces on the female joint member 100 and the male joint member 200 can be transmitted to the connecting pin shaft 300, that is, the force-bearing principle of the connection pair remains unchanged. The existence of the clearance 246 can avoid the pin interference problem when the main chord rod is under pressure caused by machining errors, can also provide sufficient space for lubricating grease, and the improved pin hole structure can make the installation and disassembly of the connecting pin shaft 300 easier, effectively solving the problem of difficult pin disassembly.

[0056] It should be specifically noted that the joint connection assembly provided by the present invention is particularly suitable for the main chord rods of two adjacent standard sections connected vertically, but is not limited thereto. If other structures also use the joint connection assembly in the present invention, they should also fall within the protection scope of the present invention.

[0057] Specifically, the peripheral edge of the entrance of the first sleeve space 102 refers to the peripheral edge of the opening for the male joint member 200 to extend into the first sleeve space 102, that is, the peripheral edge of the entrance can limit the insertion size of the male joint member 200; the side wall 241 under the tensile force refers to the side wall surface that bears the action of the connecting pin shaft 300 when under the tensile force; the contact setting does not mean that there is no gap between the two, but the existence of this gap is affected by the machining accuracy.

[0058] See Figures 1 to 6, in the first embodiment of the present utility model, the first pin hole 101 is arranged in contact with the connecting pin shaft 300 in the entire circumferential direction. The side wall surface of the second pin hole 240 away from the shaft shoulder 210 is set as the tensile force acting side wall 241, and the side wall surface of the second pin hole 240 close to the shaft shoulder 210 is set as the opposing enclosing side wall 242. That is, the structures of the female joint member 100 and the connecting pin shaft 300 remain unchanged, and only the structure of the second pin hole 240 of the male joint member 200 is improved. A clearance 246 is formed between the second pin hole 240 of the male joint member 200 and the connecting pin shaft 300. Generally, the length dimension of the second pin hole 240 of the male joint member 200 is larger than that of the first pin hole 101 of the female joint member 100. Forming the clearance 246 between the second pin hole 240 and the connecting pin shaft 300 can further provide a more sufficient space for the lubricating grease and further improve the convenience of assembling and disassembling the connecting pin shaft 300. In addition, when a clearance 246 is formed between the second pin hole 240 of the male joint member 200 and the connecting pin shaft 300, since the connecting pin shaft 300 needs to act on the side wall surface of the second pin hole 240 away from the shaft shoulder 210 when being pulled, the side wall surface of the second pin hole 240 away from the shaft shoulder 210 should be the aforementioned tensile force acting side wall 241, and the side wall surface of the second pin hole 240 close to the shaft shoulder 210 should be the aforementioned opposing enclosing side wall 242.

[0059] In addition, referring to Figure 7 , in the second embodiment of the present utility model, the second pin hole 240 is arranged in contact with the connecting pin shaft 300 in the entire circumferential direction. The side wall surface of the first pin hole 101 close to the shaft shoulder 210 is set as the tensile force acting side wall 241, and the side wall surface of the first pin hole 101 away from the shaft shoulder 210 is set as the opposing enclosing side wall 242. That is, the structures of the male joint member 200 and the connecting pin shaft 300 remain unchanged, and only the structure of the first pin hole 101 of the female joint member 100 is improved. A clearance 246 is formed between the first pin hole 101 of the female joint member 100 and the connecting pin shaft 300, and even the length dimension of the first pin hole 101 can be designed to be larger than that of the second pin hole 240. However, when a clearance 246 is formed between the first pin hole 101 of the female joint member 100 and the connecting pin shaft 300, since the connecting pin shaft 300 needs to act on the side wall surface of the first pin hole 101 close to the shaft shoulder 210 when being pulled, the side wall surface of the first pin hole 101 close to the shaft shoulder 210 should be the aforementioned tensile force acting side wall 241, and the side wall surface of the first pin hole 101 away from the shaft shoulder 210 should be the aforementioned opposing enclosing side wall 242.

[0060] Referring to Figure 3 and Figure 4, in the embodiment of the present utility model, one of the first pin hole 101 and the second pin hole 240 is set as a first round hole with a hole diameter consistent with the shaft diameter of the connecting pin shaft 300, and the other of the first pin hole 101 and the second pin hole 240 is set as a waist-shaped hole. The two ends of the waist-shaped hole have a first arc wall surface 243 and a second arc wall surface 244 which are relatively spaced. The first arc wall surface 243 is located on the tensile side of the waist-shaped hole and is set as the tensile force acting side wall 241. The first arc wall surface 243 is arranged in parallel alignment with the first round hole. Thus, on one side where the first pin hole 101 and the second pin hole 240 are arranged in parallel alignment, the connecting pin shaft 300 can be in contact with both of them. At the same time, the second arc wall surface 244 is set as the opposing enclosing side wall 242 and is arranged opposite to the periphery of the first round hole. Thus, on the other side, the first pin hole 101 and the second pin hole 240 are arranged in a staggered manner, and the pin hole set as the first round hole is in contact with the connecting pin shaft 300, while a clearance 246 is formed between the pin hole set as the waist-shaped hole and the connecting pin shaft 300 between the second arc wall surface 244 and the connecting pin shaft 300. By setting the pin hole that can form a clearance 246 with the connecting pin shaft 300 as a waist-shaped hole, it can play a role in facilitating design and production and manufacturing.

[0061] Specifically, the waist-shaped hole provides a tolerance margin to ensure that when the shaft shoulder 210 bears pressure, the connecting pin shaft 300 does not contact the second arc wall surface 244, avoiding the problem of the hole center distance L1 dimension exceeding the tolerance due to machining errors and the shaft shoulder 210 not being pressed properly. When bearing tensile force, the connecting pin shaft 300 is tightly pressed and fitted with the first arc wall surface 243, and the area enclosed by the second arc wall surface 244 provides an oil storage space to avoid the oil film layer being damaged due to grease being squeezed.

[0062] In the embodiment of the present utility model, both the first arc wall surface 243 and the second arc wall surface 244 are set as semi-circular wall surfaces with a diameter consistent with the shaft diameter of the connecting pin shaft 300, that is, there is semi-side full contact between the connecting pin shaft 300 and the waist-shaped hole to achieve the purpose of ensuring the stress area. In addition, the waist-shaped hole also has a straight wall surface 245 connecting the first arc wall surface 243 and the second arc wall surface 244 on the same side. The length dimension of the straight wall surface 245 is set to be less than or equal to one-fifth of the shaft diameter of the connecting pin shaft 300. Limiting the length dimension of the straight wall surface 245 can play a role in ensuring strength. Preferably, the length dimension of the straight wall surface 245 is set to be less than or equal to one-tenth of the shaft diameter of the connecting pin shaft 300, that is, when the shaft diameter of the connecting pin shaft 300 is set as d and the length dimension of the straight wall surface 245 is set as x, the length dimension L of the waist-shaped hole = (d + x) ≤ (d + 1 / 10d).

[0063] See Figure 5 and Figure 6In the embodiment of the utility model, one of the first pin hole 101 and the second pin hole 240 is set as a first circular hole with a hole diameter consistent with the shaft diameter of the connecting pin shaft 300, and the other of the first pin hole 101 and the second pin hole 240 is set as a second circular hole with a hole diameter larger than the shaft diameter of the connecting pin shaft 300, and the tension acting side wall 241 of the second circular hole located on the tension side is arranged parallel to the first circular hole, so that the connecting pin shaft 300 can form a contact arrangement with both of the first pin hole 101 and the second pin hole 240 on the side where they are arranged parallel to each other, and at the same time, the opposite enclosing side wall 242 in the second circular hole is arranged relative to the periphery of the first circular hole, so that the first pin hole 101 and the second pin hole 240 are staggered on the other side, and the pin hole set as the first circular hole is in contact with the connecting pin shaft 300, while the pin hole set as the second circular hole forms a gap 246 between this side and the connecting pin shaft 300. Compared with the waist-shaped hole, the processing of the second circular hole will be easier and the processing cost will be lower.

[0064] Specifically, the second circular hole provides a tolerance margin to ensure that the connecting pin shaft 300 does not contact the opposite enclosing side wall 242 when the shoulder portion 210 is under pressure, thereby avoiding the problem of the hole center distance L1 being out of tolerance due to machining errors and the shoulder portion 210 not being pressed together; when subjected to tension, the connecting pin shaft 300 is in close contact with the tension-acting side wall 241, and the area enclosed by the opposite enclosing side wall 242 provides an oil storage space to avoid the oil film layer being destroyed due to the squeezing of grease due to the squeezing of grease.

[0065] In the embodiment of the utility model, the aperture D of the second circular hole is ≤ (d + 1 / 5d), where d is set to the shaft diameter of the connecting pin 300. Limiting the aperture size of the second circular hole can play a role in ensuring the force bearing area and strength. Preferably, the aperture size of the second circular hole is set to be less than or equal to one tenth of the shaft diameter of the connecting pin 300, that is, the aperture D of the second circular hole is ≤ (d + 1 / 10d).

[0066] It should be specially noted that the present invention is not limited to forming the gap 246 by means of a waist-shaped hole or a second round hole and the connecting pin shaft 300 , and other suitable hole structures are also possible.

[0067] See also Figures 1 to 6 In the first embodiment of the present utility model, the male connector 200 includes a shoulder portion 210 and a male connector portion 220 integrally formed with the shoulder portion 210. The male connector portion 220 can extend into the first fitting space 102 and form a second pin hole 240. The end of the shoulder portion 210 away from the male connector portion 220 is welded and connected to the second main body 500. That is, the entire male connector 200 can be set as an integrated structure with the second main body 500 to enhance the connection strength.

[0068] See also Figure 10 and Figure 11, in the fifth embodiment of the present utility model, the male connector member 200 includes a male connector body 230 and a shaft shoulder 210. An end of the second main body member 500 is formed with a second sleeving space 501 communicating with the first sleeving space 102, and the peripheral edge of the entrance of the second sleeving space 501 is set as the shaft shoulder 210. The first end of the male connector body 230 extends into the second sleeving space 501 and is fixedly connected to the second main body member 500 through a fixing pin shaft 502. The second end of the male connector body 230 extends into the first sleeving space 102 and forms a second pin hole 240. That is, the male connector member 200 is set as an assembled structure on the second main body member 500, which can facilitate the replacement and maintenance of the male connector body 230. It should be particularly noted that the aperture of the first end of the male connector body 230 and the pin holes on the second main body member 500 through which the fixing pin shaft 502 passes are both consistent with the shaft diameter of the fixing pin shaft 502, and the number of the fixing pin shafts 502 connecting the male connector body 230 and the second main body member 500 can be set to at least two. At least two fixing pin shafts 502 are arranged at intervals in sequence along the extending direction of the second sleeving space 501, and two adjacent fixing pin shafts 502 are arranged parallel or perpendicular to each other. Preferably, the number of the fixing pin shafts 502 is set to two.

[0069] As Figure 8 and Figure 9 shown, in the third and fourth embodiments of the present utility model, the number of the first pin holes 101, the second pin holes 240 and the connecting pin shafts 300 are all set to at least two. At least two first pin holes 101 are arranged at intervals in sequence along the extending direction of the first sleeving space 102, and two adjacent first pin holes 101 are arranged parallel or perpendicular to each other. The first pin holes 101, the second pin holes 240 and the connecting pin shafts 300 are set to be in one-to-one correspondence, so that the female connector member 100 and the male connector member 200 can be connected through at least two connecting pin shafts 300 to achieve the purpose of enhancing the connection strength.

[0070] In the embodiment of the present utility model, the first sleeving space 102 is set as a cylindrical space, and the part of the male connector member 200 extending into the first sleeving space 102 is set as a solid cylinder, so that the male connector member 200 can rotate in the first sleeving space 102 to facilitate the alignment of the first pin hole 101 and the second pin hole 240. Of course, the present utility model is not limited to this. It is also possible that the first sleeving space 102 is set as a polygonal space, and the part of the male connector member 200 extending into the first sleeving space 102 is set as a solid prism matching the polygonal space.

[0071] Please refer to again Figures 1 to 6 , in the first embodiment of the present utility model, the male connector member 200 is set as the upper end of the second main body member 500, and the female connector member 100 is set as the lower end of the first main body member 400; Refer to Figure 12 andFigure 13 In the sixth embodiment of the present utility model, the male connector 200 is provided at the lower end of the second main body 500, and the female connector 100 is provided at the upper end of the first main body 400.

[0072] In summary, based on the existing standard section pin connection pair structure, without changing the interchangeability of the standard section and the force-bearing principle of the connection pair, only changing the pin hole structure on the male connector 200 or the female connector 100, ensuring that the pin does not interfere when the main chord is under compression and there is sufficient oil storage space when under tension, avoiding the problem of pin interference when the main chord is under compression caused by machining errors, providing a larger oil storage gap. Through experimental verification, the improved pin structure is easier to install and disassemble, and can effectively solve the problem of difficult pin disassembly.

[0073] In addition, the present utility model also provides a standard section device, wherein the standard section device includes the joint connection assembly described above, and the first main body 400 and the second main body 500 are respectively set as the main chord rods of two standard sections connected adjacent to each other up and down. It can be understood that the male connector 200 can be set at the upper end or the lower end of the main chord rod, and can be specifically selected according to actual needs. In addition, the main chord rod can be set as round steel, round pipe, square pipe, H-shaped steel, angle steel, etc. Since the standard section device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0074] In addition, the present utility model further provides a tower crane, wherein the tower crane includes the standard section device described above. Since the tower crane adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0075] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0076] In the present utility model, unless otherwise clearly defined or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A joint connection assembly, characterized in that: The joint connection assembly comprises: A female connector (100) is disposed on the first main body (400) and is formed with a first fitting space (102), and a first pin hole (101) is formed on a peripheral wall of the first fitting space (102); A male connector assembly, comprising a male connector member (200) and a connecting pin shaft (300), wherein the male connector member (200) is arranged on a second main body member (500) and can extend into the first set space (102), and the male connector member (200) is also formed with a shaft shoulder portion (210) abutting against the periphery of the entrance of the first set space (102), and the male connector member (200) is formed with a second pin hole (240) communicating with the first pin hole (101) so that the connecting pin shaft (300) can be sequentially inserted in series; Among them, one of the first pin hole (101) and the second pin hole (240) is arranged in contact with the connecting pin shaft (300) in the entire circumferential direction, the tension-acting side wall (241) of the other of the first pin hole (101) and the second pin hole (240) is arranged in contact with the connecting pin shaft (300), and a gap (246) is formed between the opposing enclosing side wall (242) arranged opposite to the tension-acting side wall (241) and the connecting pin shaft (300).

2. The joint connection assembly according to claim 1, characterized in that: The first pin hole (101) is arranged in contact with the connecting pin shaft (300) in the entire circumferential direction, a side wall surface of the second pin hole (240) which is arranged away from the shaft shoulder portion (210) is set as the tension acting side wall (241), and a side wall surface of the second pin hole (240) which is arranged close to the shaft shoulder portion (210) is set as the opposite enclosing side wall (242); Alternatively, the second pin hole (240) is arranged in contact with the connecting pin shaft (300) in the entire circumferential direction, a side wall surface of the first pin hole (101) close to the shaft shoulder portion (210) is set as the tension acting side wall (241), and a side wall surface of the first pin hole (101) away from the shaft shoulder portion (210) is set as the opposite enclosing side wall (242).

3. The joint connection assembly according to claim 1, characterized in that: One of the first pin hole (101) and the second pin hole (240) is set as a first circular hole with a hole diameter consistent with the shaft diameter of the connecting pin shaft (300), and the other of the first pin hole (101) and the second pin hole (240) is set as a waist-shaped hole, and the two ends of the waist-shaped hole have a first arc wall surface (243) and a second arc wall surface (244) arranged relatively and spaced apart from each other, the first arc wall surface (243) is located on the tension side of the waist-shaped hole and is set as the tension-acting side wall (241), the first arc wall surface (243) is arranged parallel to and aligned with the first circular hole, and the second arc wall surface (244) is set as the opposite enclosing side wall (242) and is arranged relatively to the periphery of the first circular hole.

4. The joint connection assembly according to claim 3, characterized in that: The first arc wall surface (243) and the second arc wall surface (244) are both set as semicircular wall surfaces with diameters consistent with the shaft diameter of the connecting pin shaft (300), and the waist-shaped hole also has a straight wall surface (245) connecting the first arc wall surface (243) and the second arc wall surface (244) on the same side, and the length dimension of the straight wall surface (245) is set to be less than or equal to one fifth of the shaft diameter of the connecting pin shaft (300).

5. The joint connection assembly according to claim 1, characterized in that: One of the first pin hole (101) and the second pin hole (240) is set as a first circular hole with a hole diameter consistent with the shaft diameter of the connecting pin shaft (300), and the other of the first pin hole (101) and the second pin hole (240) is set as a second circular hole with a hole diameter larger than the shaft diameter of the connecting pin shaft (300), and the tension acting side wall (241) of the second circular hole located on the tension side is arranged parallel to and aligned with the first circular hole, and the opposite enclosing side wall (242) of the second circular hole is arranged opposite to the periphery of the first circular hole.

6. The joint connection assembly according to claim 5, characterized in that: The diameter of the second circular hole is D≤d+1 / 5d, where d is set to the shaft diameter of the connecting pin shaft (300).

7. The joint connection assembly according to any one of claims 1 to 6, characterized in that: The male connector (200) comprises the shaft shoulder portion (210) and a male connector portion (220) integrally formed with the shaft shoulder portion (210); the male connector portion (220) can extend into the first fitting space (102) and is formed with the second pin hole (240); and one end of the shaft shoulder portion (210) away from the male connector portion (220) is welded to the second main body (500); Alternatively, the male connector (200) comprises a male connector body (230) and the axial shoulder portion (210); the end of the second main body (500) is formed with a second fitting space (501) communicating with the first fitting space (102); and the periphery of the entrance of the second fitting space (501) is set as the axial shoulder portion (210); the first end of the male connector body (230) extends into the second fitting space (501) and is fixedly connected to the second main body (500) through a fixed pin shaft (502); and the second end of the male connector body (230) extends into the first fitting space (102) and is formed with the second pin hole (240).

8. The joint connection assembly according to any one of claims 1 to 6, characterized in that: The number of the first pin hole (101), the second pin hole (240) and the connecting pin shaft (300) is set to at least two, at least two of the first pin holes (101) are arranged in sequence along the extension direction of the first fitting space (102), and two adjacent first pin holes (101) are arranged parallel to or perpendicular to each other, and the first pin hole (101), the second pin hole (240) and the connecting pin shaft (300) are arranged in a one-to-one correspondence; And / or, the first fitting space (102) is configured as a cylindrical space, and the portion of the male connector (200) extending into the first fitting space (102) is configured as a solid cylinder.

9. A standard node device, characterized in that: The standard section device comprises a joint connection assembly according to any one of claims 1 to 8, and the first main body member (400) and the second main body member (500) are respectively configured as main chords of two standard sections connected adjacent to each other in upper and lower directions.

10. A tower crane, characterized in that: The tower crane comprises the mast device according to claim 9.

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