Limiting base

Abstract

The limiting base comprises a first component, a second component and a locking mechanism connected between the first component and the second component, the first component is bent to form a first buckling position, the second component is bent to form a second buckling position, and the first component and the second component are oppositely arranged in the elastic direction. The first buckling position is opposite to the second buckling position along the tightness direction; when the locking mechanism is locked, the second component cannot move away from the first component under the limitation of the locking mechanism, and the locking mechanism can be unlocked after moving. Compared with the difficult operation of locking up and down clamping by adopting a bolt in the prior art, the limiting base is arranged to be in the left-right direction, namely two parts which can move relatively in the width direction of the I-shaped beam or the H-shaped steel, and each part is provided with a buckling position which can be buckled with the flange; by pushing the wedge-shaped part or utilizing the elasticity of the connecting part between the two parts, the left part and the right part can be quickly close to each other and clamped and fixed on the I-shaped beam or the H-shaped steel, quick assembly and quick disassembly can be realized, the installation difficulty is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering equipment, and particularly relates to a limiting base for construction. Background Art

[0002] There is a steel pipe limiting base used for the erection of external scaffolding in construction engineering. It includes a first component, a second component, a locking bolt and a nut. The first component includes a base plate, a vertical rod and a bent portion. The vertical rod is connected to the front side of the base plate. The bent portion is bent downward from the edge of the base plate by more than 90 degrees, and a buckling position capable of buckling the upper flange of the I-beam is formed between the bent portion and the base plate. A first through hole is provided on one side of the base plate opposite to the bent portion. The second component mainly includes a clamping plate, and the clamping plate is provided with a second through hole. After placing the base plate on the upper flange of the I-beam and making the above-mentioned buckling position buckle the first side of the upper flange, at this time, the side where the first through hole on the base plate is located is above the upper flange and extends beyond the second side of the upper flange. Subsequently, the clamping plate is placed below the second side of the upper flange, and the bolt passes through the first through hole and the second through hole in sequence and cooperates with the nut to clamp the second side of the upper flange from the upper and lower sides by the base plate and the clamping plate. In this way, the first side of the upper flange is buckled and the second side is clamped, so that the steel pipe limiting base is fixed to the I-beam. Subsequently, the steel pipe can be sleeved outside the vertical rod to carry out the erection of the external scaffolding.

[0003] When erecting an external scaffolding on a steel beam, each erected steel pipe needs to be correspondingly positioned by a limiting base. For the existing such limiting base, the first component can be directly buckled and installed near the installation position only when the clamping plate is very loose or the clamping plate is completely disassembled. And then when tightening the bolt by locking the clamping plate, a very large number of turns need to be rotated. Especially for a large-scale scaffolding, when the number of limiting bases to be installed is large, the installation is more time-consuming and laborious, increasing the workload and operation difficulty of construction personnel. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a limiting base that can reduce the installation difficulty and improve the operation efficiency in various ways.

[0005] The first limiting base provided by the utility model includes a first component, a second component and a locking mechanism connected between the first component and the second component. The first component is bent to form a first buckling position, and the second component is bent to form a second buckling position. The first component and the second component are arranged oppositely along the tightening and loosening direction, and the first buckling position and the second buckling position are opposite along the tightening and loosening direction. When the locking mechanism is locked, the second component cannot move away from the first component under the restriction of the locking mechanism. The locking mechanism can be unlocked after a translational movement. The limiting base further includes a vertical rod, and the vertical rod includes two separated half rod bodies, and the two half rod bodies are respectively fixedly connected to the first component and the second component.

[0006] As can be seen from the above solution, compared with the difficult operation of using bolts to lock the upper and lower clamping in the prior art, the present utility model sets the limit base into two parts that can move relative to each other in the left-right direction, that is, the width direction of the I-beam or H-beam. Each part is formed with a clamping position that can be buckled with the upper flange or the lower flange. By pushing the locking structure of the wedge-shaped component, the left and right components can be quickly brought closer to each other and clamped on the flange of the I-beam, enabling quick installation and disassembly, reducing the installation difficulty and improving the operation efficiency. Further, the existing limit bases used for the steel pipes of the external scaffolding or the edge protection scaffolding are all welding the cylindrical vertical rods to the first component. Although it is beneficial to the processing and production of the limit base, in actual application, whether the steel pipe is sleeved outside the vertical rod or inserted into the hollow vertical rod, when the scaffolding is built and the limit base is stressed, the limit base is in an unsatisfactory stress state. In the bolt-nut locking method of the background art, most of the acting forces always act on the connection between the first component and the second component, causing the two to tend to decompose and there are potential safety hazards. For this reason, the present utility model separates the vertical rod into two mutually separated half-rod bodies, and the two half-rod bodies are respectively located on the mutually butted first component and the second component. In this way, when the scaffolding is built and the limit base is stressed, the acting force exerted by the steel pipe sleeved outside the vertical rod on the two half-rod bodies located inside its inner circumference tends to make the two half-rod bodies approach each other. This design makes good use of the acting force of the steel pipe of the scaffolding or the protection frame to prevent the limit base from decomposing, thus improving the reliability of the erected frame and enhancing the safety.

[0007] A further solution is that the locking mechanism is arranged between the inner sides of the two half-rod bodies; when the locking mechanism is placed between the inner sides of the two half-rod bodies along the length direction of the vertical rod, at least one half-rod body is forced to approach the other half-rod body along the tightening and loosening direction through the forcing of the wedge surface structure.

[0008] As can be seen from the above, this method has the characteristics of simple assembly and good safety. During assembly, after the first component and the second component are respectively installed on both sides of the flange, the locking mechanism is inserted from top to bottom. The wedge surface structure between the locking mechanism and the first component and / or the second component generates a forcing effect, causing the first component and the second component to approach each other; subsequently, when the steel pipe is sleeved outside the vertical rod, not only the acting force of the steel pipe of the scaffolding or the protection frame is used to prevent the limit base from decomposing, but also the locking mechanism is protected inside the steel pipe, avoiding the unlocking risk caused by external factors and enhancing the safety.

[0009] A further solution is that the locking mechanism includes two pins whose upper ends are connected and whose lower ends are separated from each other. Insertion positions are arranged on the inner sides of the half-rod bodies, and the two pins are respectively matched with the two insertion positions; or, the locking mechanism includes two insertion positions, and pins are arranged on the inner sides of the half-rod bodies, and the two pins are respectively matched with the two insertion positions; the outer surface of at least one pin or the inner surface of at least one insertion position is set as an inclined surface inclined to the length direction, and the wedge surface structure includes the inclined surface.

[0010] As can be seen from the above, in this way, only by inserting the locking mechanism downward can the assembly of the limit base be completed. The structure is simple and the assembly is easy, reducing production costs and improving work efficiency.

[0011] A further solution is that both the pin and the insertion position extend in a direction inclined to the length direction, and the outer peripheral dimension of the pin exactly matches the inner peripheral dimension of the insertion position.

[0012] As can be seen from the above, in this setting, when the two components are buckled to both sides of the flange of the I-beam and the downward insertion locking mechanism is used, the pins and insertion positions with exactly matching dimensions are closely fitted to improve the anti-impact performance, prevent the risk of loosening, and enhance safety.

[0013] Another further solution is that the locking mechanism includes a pin, and the insertion position is arranged on the inner side of the half rod body; the pin extends in a direction inclined to the length direction, the insertion position includes a first inner surface close to the axis of the vertical rod and a second inner surface away from the axis, the first inner surface is set as an inclined surface, and the cross-sectional size of the insertion position gradually decreases from its socket to its bottom; the locking mechanism further includes a wedge block inserted into the insertion position to wedge the pin.

[0014] As can be seen from the above, when a large impact is received or when the inclination of the I-beam is large, the locking mechanism may potentially loosen. To solve this problem, the locking mechanism is also provided with a wedge block that can wedge the pin.

[0015] A further solution is that the locking mechanism includes a pin, the insertion positions are arranged on the inner sides of the two half rod bodies and are staggered in the length direction. When the two half rod bodies are fitted in the tightening and loosening directions, the two insertion positions at least overlap a part in the length direction, and the pin is sequentially fitted with the two insertion positions in the length direction; one side or both sides of the pin in the tightening and loosening directions are set as inclined surfaces inclined to the length direction, and the wedge surface structure includes inclined surfaces.

[0016] As can be seen from the above, the assembly of the limit base can be completed by inserting the locking mechanism downward. The locking mechanism has only one pin, with a simple structure and convenient assembly.

[0017] Another further solution is that the locking mechanism includes a first fitting part, the second fitting part is arranged on the inner side of the half rod body. During the process of the pin forcing the two half rod bodies to fit, the two second fitting parts gradually approach the first fitting part in the tightening and loosening directions and finally fit with the first fitting part; at least one of the side surfaces of the first fitting part and the two second fitting parts in the fitting is set as a slope inclined to the length direction, and the inclination directions of the inclined surface and the slope are opposite.

[0018] As can be seen from the above, the setting of the cooperation between the first fitting part and the two second fitting parts makes the cooperation between the two half rod bodies and the locking structure more stable, reducing the possibility of the locking mechanism shifting after cooperating with the two half rod bodies.

[0019] The second type of limit base provided by the present utility model includes a first component, a second component, and a locking mechanism connected between the first component and the second component. The first component is bent to form a first buckling position, and the second component is bent to form a second buckling position. The first component and the second component are arranged oppositely along the tightening and loosening direction. The first buckling position and the second buckling position are opposite along the tightening and loosening direction. The first component and the second component are slidably connected along the tightening and loosening direction. The locking mechanism includes a wedge-shaped component wedged between the first component and the second component. After the wedge-shaped component moves translationally, the locking mechanism can be unlocked. When the locking mechanism is locked, the second component is restricted from moving away from the first component under the restriction of the locking mechanism.

[0020] As can be seen from the above solution, when it is easy to disassemble and assemble the tightening and loosening of the relative movement between the first component and the second component, after placing the loosened limit base on the I-beam or H-beam, driving the wedge-shaped component in the direction perpendicular to the tightening and loosening direction can wedge and lock it, which has an excellent self-locking effect, simple operation and good stability.

[0021] A further solution is that the locking mechanism includes at least two wedge-shaped components with different dimensions and / or different bevel angles in the tightening and loosening direction, and the wedge-shaped components are detachably installed.

[0022] As can be seen from the above, in this setting, it is possible to meet the installation requirements of I-beams or H-beams with different widths by replacing different wedge-shaped components, and the staff can also select different bevel angles according to the comprehensive consideration of the adjustment range and the self-locking effect to be more suitable for the use scenario.

[0023] The third type of limit base provided by the present utility model includes a first component, a second component, and a locking mechanism connected between the first component and the second component. The first component is bent to form a first buckling position, and the second component is bent to form a second buckling position. The first component and the second component are arranged oppositely along the tightening and loosening direction. The first buckling position and the second buckling position are opposite along the tightening and loosening direction. Both the first component and the second component are provided with engaging portions, and the two engaging portions are opposite along the tightening and loosening direction. The locking mechanism includes two limiting portions arranged in a forked manner. Along the tightening and loosening direction, the two engaging portions are restricted between the two limiting portions, thereby restricting the first component and the second component from moving away from each other. The engaging portion and the limiting portion form a supporting structure for sleeving and cooperating with the pipe fitting.

[0024] As can be seen from the above solution, if the vertical rod of the existing limit base is divided into two half-rod bodies and jacks for cooperating with the pins of the locking mechanism or pins for cooperating with the jacks are provided on the inner sides of the two half-rod bodies, the manufacturing difficulty is relatively high and there may be problems with poor stability. In the present utility model, the existing vertical rod in the limit base is cancelled, and the supporting structure formed by combining the limiting parts on the locking mechanism and the engaging parts on the two components is directly used to replace the existing vertical rod for sleeving and cooperating with the steel pipe. In this way, both the locking mechanism and the two components have simpler structures, which is very beneficial to production and reduces production and use costs.

[0025] A further solution is that the locking mechanism includes a positioning part disposed between the two limiting parts at intervals. The positioning part is disposed between the two engaging parts and supports the two engaging parts.

[0026] Thus, it can be seen that the positioning part between the two limiting parts can prevent the deviation during the limiting of the two engaging parts and play a supporting role for the engaging parts.

[0027] A further solution is that on at least one side surface of the outer sides of the two engaging parts and the inner sides of the two limiting parts in the tightening and loosening direction, it is set as an inclined surface.

[0028] Thus, it can be seen that setting at least one of the contact surfaces between the engaging parts or the limiting parts as an inclined surface can greatly facilitate the cooperation between the engaging parts and the limiting parts. When the limiting part gradually engages with the engaging part perpendicular to the tightening and loosening direction, due to the existence of the inclined surface, the limiting part will generate an inward pressing force along the tightening and loosening direction on the engaging part, forcing the first component and the second component to gradually approach until the fastening position is finally reached.

[0029] A further solution is that at least one engaging part is provided with a guiding groove, and the limiting parts respectively cooperate with the guiding grooves. The guiding grooves limit the movement of the limiting parts from a first direction, and the first direction is perpendicular to the tightening and loosening direction and perpendicular to the extending direction of the guiding grooves.

[0030] Thus, it can be seen that providing the guiding grooves on the engaging parts not only facilitates the engagement of the limiting parts and the engaging parts, but also the guiding grooves can limit the movement of the limiting parts perpendicular to the tightening and loosening direction, thereby avoiding the slippage during the engagement of the two, resulting in unstable cooperation or cooperation failure, and improving the installation efficiency and the safety of the operation.

[0031] The fourth limit base provided by the present utility model includes a first part and a second part which are fork-shaped. The first part is bent to form a first buckling position, and the second part is bent to form a second buckling position. The first part and the second part are arranged oppositely in the tightening and loosening direction, and the first buckling position and the second buckling position are arranged oppositely in the tightening and loosening direction; the first part and the second part are connected by a bending part, and the bending part protrudes to form a supporting structure for sleeving and cooperating with the pipe fitting. The elastic deformation of the bending part can change the distance between the first part and the second part in the tightening and loosening direction.

[0032] It can be seen that the limit base is an integrated design without any additional limit components. The structure of the limit base composed of the first part and the second part is very simple. During the production process, it only requires cutting the raw materials and bending them multiple times, which greatly reduces the difficulty and efficiency of production.

[0033] A further solution is that the curved portion includes a top end away from the first buckle position and a bottom end close to the first buckle position; along the supporting direction of the curved portion, at least one planar dimension of the curved portion gradually decreases to the top end; or, the dimension of the curved portion in the tightness direction gradually decreases from the top end to the bottom end; or, the dimension of the curved portion in the tightness direction remains unchanged.

[0034] It can be seen that setting a smaller and weaker connection at the junction of the first part and the second part can facilitate the opening and closing of the first part relative to the second part when the limiting base is fixed to the I-beam, making it easier to install, and the small supporting structure is also convenient for the installation of the pipe fittings. The curved part gradually increases from the top to the bottom. With the gradually increasing size, the pipe fittings can be firmly combined with the curved part after being installed in a certain position. During use, the two buckles of the limiting base will become more tightened due to the downward external force. In addition, the curved part under this setting is suitable for matching with a variety of pipe fittings with different inner diameters. For another curved part, when processing the limiting base, the curved part is pre-inclined in a reverse direction, so that the size of the curved part from the top to the bottom in the direction of tension gradually decreases. When the limiting base is fixed to the I-beam or H-beam, even if the first part and the second part are relatively far away from the curved part and open to both sides in the direction of tension, the size of the bottom end of the curved part will not exceed the top end, and the pipe fitting set can be directly inserted to the bottom end of the curved part, which is more convenient for installation.

[0035] A further solution is that the curved portion includes at least two bending points.

[0036] It can be seen that the bending part enables the first part and the second part to be elastically connected, and the first part and the second part can be separated after force is applied. After aligning the I-beam and removing the force, the first part and the second part tend to move closer due to the bending structure in multiple places. At this time, the I-beam can be clamped by the first buckle position and the second buckle position. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural diagram of the first embodiment of the limiting base of the utility model in the locked state.

[0038] Figure 2 This is a structural diagram of the first embodiment of the limiting base of the utility model in the unlocked state.

[0039] Figure 3 It is a cross-sectional view of the first embodiment of the limiting base of the utility model.

[0040] Figure 4 This is the structural diagram of the unlocking state of the second embodiment of the limit base of the present utility model.

[0041] Figure 5 This is the exploded view of the structure of the third embodiment of the limit base of the present utility model.

[0042] Figure 6 This is the cross-sectional view of the third embodiment of the limit base of the present utility model.

[0043] Figure 7 This is the cross-sectional view of the fourth embodiment of the limit base of the present utility model.

[0044] Figure 8 This is the exploded view of the structure with a cross-section of the fifth embodiment of the limit base of the present utility model.

[0045] Figure 9 This is the exploded view of the structure with a cross-section of the sixth embodiment of the limit base of the present utility model.

[0046] Figure 10 This is the exploded view of the structure with a cross-section of the seventh embodiment of the limit base of the present utility model.

[0047] Figure 11 This is the exploded view of the structure with a cross-section of the eighth embodiment of the limit base of the present utility model.

[0048] Figure 12 This is the cross-sectional view of the ninth embodiment of the limit base of the present utility model.

[0049] Figure 13 This is the cross-sectional view of the tenth embodiment of the limit base of the present utility model.

[0050] Figure 14 This is the structural diagram of the locking state of the eleventh embodiment of the limit base of the present utility model.

[0051] Figure 15 This is the structural diagram of the unlocking state of the eleventh embodiment of the limit base of the present utility model.

[0052] Figure 16 This is the structural diagram of the locking state of the twelfth embodiment of the limit base of the present utility model.

[0053] Figure 17 This is the structural diagram of the first and second components of the twelfth embodiment of the limit base of the present utility model.

[0054] Figure 18 This is the structural diagram of the unlocking state of the thirteenth embodiment of the limit base of the present utility model.

[0055] Figure 19 This is the structural diagram of the fourteenth embodiment of the limit base of the present utility model.

[0056] Figure 20 This is the structural diagram of the fifteenth embodiment of the limit base of the present utility model.

[0057] Figure 21 This is the structural diagram of the sixteenth embodiment of the limit base of the present utility model.

[0058] Figure 22 This is the structural diagram of the seventeenth embodiment of the limit base of the present utility model.

[0059] Figure 23 This is the structural diagram of the eighteenth embodiment of the limit base of the present utility model.

[0060] Figure 24 This is the structural diagram of the nineteenth embodiment of the limit base of the present utility model.

[0061] Figure 25 This is the structural diagram of the twentieth embodiment of the limit base of the present utility model.

[0062] Figure 26 This is the structural diagram of the twenty - first embodiment of the limit base of the present utility model. Detailed implementation manners

[0063] The first embodiment of the limit base

[0064] Refer to Figures 1 to 3 , this embodiment includes a first component 41, a second component 42, a wedge component 43 and a locking pin 44. An integral vertical rod 48 is welded on the first base 411 of the first component 41. The locking mechanism of this embodiment includes the wedge component 43.

[0065] The first component 41 further includes a slide rail part 412, a first abutting part 413 and a first blocking part 414. The slide rail part 412 extends along the tightening and loosening direction from the edge of the first base 411. The first abutting part 413 protrudes vertically (in the z - axis direction shown in the figure) from the upper surface of the slide rail part 412. The first blocking part 414 extends from the top of the first abutting part 413 in the reverse direction of the extension direction of the slide rail part 412. Thus, vertically, the slide rail part 412 and the first blocking part 414 form an insertion position 430 through which the wedge component 43 can pass. And, two second wedge surfaces 415 are provided on the first abutting part 413 and are symmetrically arranged along the center line in the tightening and loosening direction.

[0066] The second component 42 includes a second base 421 and a slider part 422 connected to the upper side of the second base 421. The slider part 422 is provided with an insertion hole 420 penetrating along the tightening and loosening direction. The insertion hole 420 cooperates with the slide rail part 412 so that the slider part 422 and the second component 42 where it is located can reciprocate along the tightening and loosening direction on the slide rail part 412.

[0067] At this time, the sliding part 422 itself serves as the second abutting part and is opposite to the first abutting part 413 in the tightening and loosening direction and is located on the opposite sides of the above-mentioned insertion position 430. Moreover, the slider part 422 extends the second blocking part 424 along the upper edge of the insertion hole 420 in the tightening and loosening direction. The second blocking part 424 is opposite to the first blocking part 414 in the tightening and loosening direction, and the second blocking part 424 is spaced apart from the slide rail part 412 in the vertical direction.

[0068] The wedge-shaped part 43 is a plate part. Mainly, a first wedge surface 431 is provided on the wedge-shaped part 43, which is inclined between the tightening and loosening direction and the y-axis direction shown in the figure. The y-axis direction is the insertion direction of the above-mentioned insertion position 430 and is also the length direction of the I-beam or H-shaped steel to which the limit base is to be installed.

[0069] See Figure 2 , in the current state, the locking mechanism is in the unlocked state, the wedge-shaped part 43 is not installed. At this time, the first part 41 and the second part 42 can move relative to each other in the tightening and loosening direction. In this state, disassembly and assembly can be carried out with the I-beam or H-shaped steel.

[0070] See Figure 3 , when the buckle positions on both sides of the first part 41 and the second part 42 are respectively buckled to the two side parts of the upper flange, after the wedge-shaped part 43 is driven into the insertion position 430, it can be wedged tightly between the first abutting part 413 and the sliding part 422, and the first wedge surface 431 abuts against the second wedge surface 415; when the driven wedge-shaped part 43 is tight enough, a self-locking effect is formed, the wedge-shaped part 43 cannot retreat, the locking mechanism is locked, and the limit base is also firmly buckled on the I-beam or H-shaped steel.

[0071] See Figure 3 , in this embodiment, the included angle a of the first wedge surface 431 on the wedge-shaped part is 5 degrees. In other embodiments, the included angle can be less than 15 degrees. The above-mentioned included angle is the angle formed between the first wedge surface and the direction perpendicular to the tightening and loosening direction (y-axis direction) in the projection in the vertical direction or the length direction of the vertical pole (z-axis direction).

[0072] Below a certain angle value, the larger the included angle, the more beneficial it is to the adjustable range between the second part and the first part in the tightening and loosening direction and the more beneficial it is to the applicability of the limit base. However, relatively speaking, the self-locking ability of the wedge-shaped part will be worse; and the smaller the included angle, the more beneficial it is to the locking effect of the wedge-shaped part and the self-locking and anti-loosening, but its adjustable range is smaller and it is more suitable for use with I-beams of specific sizes. Of course, a wedge-shaped part with a smaller included angle can also be locked with a locking pin to ensure the reliability of the base. Of course, multiple wedge-shaped parts 43 with different lengths in the tightening and loosening direction can be equipped to adapt to I-beams or H-shaped steels with different widths for adjustment.

[0073] The second embodiment of the limit base

[0074] See Figure 4 Compared with the first embodiment, in this embodiment, the first component includes a slide rail portion 481, and the slide rail portion 481 is provided with a socket 482 extending along the tightening and loosening direction and having an opening direction along the length direction of the vertical rod. The second component also includes a base portion 491 and a slider portion 492 connected to the upper side of the base portion 491. The slider portion 492 is provided with a through hole along the tightening and loosening direction, and the through hole cooperates with the slide rail portion 481 so that the slider portion 492 and the second component where it is located can reciprocally slide on the slide rail portion 481 along the tightening and loosening direction.

[0075] The limit base of this embodiment is fixed below the H-shaped steel, and the wedge-shaped component 471 is a plate component. As Figure 4 shown, the wedge-shaped component 471 is narrower at the lower part and wider at the upper part along the length direction, and can be inserted into the socket from top to bottom. As the insertion depth becomes deeper and deeper, and due to the structural characteristic that the wedge-shaped component 471 is narrower at the upper part and wider at the lower part, a pressing force along the tightening and loosening direction towards the first component will be generated on the second component, and finally it will be inserted firmly enough to firmly fix the limit base on the I-beam.

[0076] Compared with the first embodiment, the limit base of this embodiment is more convenient for production and manufacturing and has a lower cost.

[0077] Third Embodiment of the Limit Base

[0078] See Figure 5 and Figure 6 In this embodiment, first, on the projection in the length direction of the vertical rod, the joint surface between the first component and the second component is perpendicular to the tightening and loosening direction, that is, the first component and the second component are symmetrically divided, including symmetrically dividing the vertical rod. In this embodiment, the vertical rod is a hollow rod body, and the inner side of the half rod body 511 refers to the inner side of the semi-circular tube wall of the half rod body 511.

[0079] In this embodiment, the locking mechanism 52 includes two pins 521 connected at the upper end and separated from each other at the lower end. The two pins 521 have a first outer surface 5211 close to the axis of the vertical rod and opposite to each other. The first outer surface 5211 is set as an inclined surface inclined to the length direction of the vertical rod, and from top to bottom, the distance between the two first outer surfaces 5211 gradually increases from the upper end to the lower end.

[0080] The inner side of the half rod body 511 is provided with a socket 512 connected to the inner wall surface of the semi-circular tube wall. The socket 512 is provided with an insertion position 5120 with an upward-facing socket, as Figure 6 shown. The two insertion positions 5120 have a first inner surface 5121 close to the axis of the vertical rod. The first inner surface 5121 is set as an inclined surface inclined to the length direction of the vertical rod, and from top to bottom, the distance between the two first inner surfaces 5121 gradually increases from the upper end to the lower end.

[0081] Thus, when the locking mechanism 52 is placed between the inner sides of the two half rods along the length direction of the vertical rod, that is, when the two pins 521 are respectively inserted downward into the two insertion positions 5120, the first inner surface 5121 and the first outer surface 5211 are in abutting cooperation as a wedge surface structure, forcing the two half rods 511 to move along the tightening and loosening direction and approach each other.

[0082] Fourth Embodiment of the Limit Base

[0083] Comparison Figure 6 and Figure 7 In the third embodiment, the insertion position 5120 almost extends to the upper and lower ends of the vertical rod. Compared with the third embodiment, in this embodiment, the socket where the insertion position is located is arranged at the lower part of the half rod 531. Relatively, on the locking mechanism 54, the two pins 541 are only arranged at the lower part of the locking mechanism 54, and the upper part of the locking mechanism 54 is set as a part convenient for operation.

[0084] Fifth Embodiment of the Limit Base

[0085] In this embodiment, another implementation manner of the socket and the insertion position is mainly disclosed. Refer to Figure 8 In this embodiment, two sockets 552 are arranged at intervals along the length direction of the vertical rod on the inner side of the half rod. The insertion positions of the two sockets 552 communicate with each other along the length direction, and the inner surfaces of the two insertion positions jointly form an inclined surface as a wedge surface mechanism.

[0086] Sixth Embodiment of the Limit Base

[0087] In this embodiment, another implementation manner of the insertion position is mainly disclosed. Refer to Figure 9 In this embodiment, the insertion position 560 can also be open on the side. Mainly, a socket 56 with a T-shaped cross-section along the length direction of the vertical rod is arranged on the inner side of the half rod. The socket 56 includes a partition plate 561 and an inclined plate 562 that are perpendicularly connected to each other. The two side edges of the partition plate 561 are respectively connected to the inner wall surface of the tube wall of the half rod and the surface of the inclined plate 562, thus forming a structure with a substantially "I"-shaped cross-section. In this way, an insertion position 560 is formed on both sides of the thickness of the partition plate 561, and since the inclined plate 562 extends obliquely along the length direction of the vertical rod, the surface of the inclined plate 562 facing the insertion position 560 becomes an inclined surface as a wedge surface structure.

[0088] Relatively, on the locking mechanism, two pins 57 are arranged on each side of the two opposite sides in the tightening and loosening direction. The two pins 57 on each side are arranged at intervals in a direction perpendicular to the tightening and loosening direction and a gap 570 is formed between them. Thus, when the locking mechanism is inserted downward, the four pins 57 are respectively inserted into the four insertion positions 560, and the gap 570 cooperates with the partition plate 561.

[0089] Further, a connecting portion 571 is also provided on the locking mechanism. The connecting portion 571 is connected in a "U" shape between the lower parts of the inner sides of two pins 57 on the same side in the tightening and loosening direction. Moreover, an inclined insertion hole 5710 is formed between the connecting portion 571 and the lower parts of the two pins 57 connected thereto. The penetrating direction of the inclined insertion hole 5710 is inclined with respect to the length direction of the vertical rod along the inner side of the pin 57, and the cross-section of the inclined insertion hole 5710 is in a "one" shape. The inclined insertion hole 5710 communicates with the above-mentioned gap 570 to form a T-shaped insertion position. During the downward insertion process of the locking mechanism, the T-shaped insertion position tightly cooperates with the above-mentioned T-shaped socket 56. The setting of the connecting portion 571 ensures the relative fixation between the two pins 57 on the same side in the tightening and loosening direction, prevents deformation, and improves the anti-impact ability, especially the impact ability in the horizontal direction, further improving the reliability.

[0090] Seventh Embodiment of the Limit Base

[0091] See Figure 10 , in this embodiment, both the pin 621 and the insertion position 610 extend along a direction inclined with respect to the length direction of the vertical rod. And it can be seen that the outer peripheral contour of the pin 621 completely matches the inner peripheral contour of the insertion position 610, and the outer peripheral dimension of the pin 621 completely matches the inner peripheral dimension of the insertion position 610. The pins and insertion positions with completely matching dimensions are tightly fitted to improve the anti-impact performance, prevent the risk of loosening, and improve the safety.

[0092] Eighth Embodiment of the Limit Base

[0093] See Figure 11 , in this embodiment, only the unilateral pin 651 on the locking mechanism is set to be inclined. There is only an inclined surface 6301 provided in the insertion position on the first component, while the second pin and the second insertion position both extend along the length direction and do not have a wedge surface structure.

[0094] The present utility model does not limit the specific outer peripheral contour of the pin and the inner peripheral contour of the insertion position. In other embodiments, the outer contour of the pin and the contour of the insertion position can be circular, polygonal, elliptical, T-shaped, dovetail-shaped, and other irregular shapes.

[0095] In other embodiments, the settings of the pins and the insertion positions on the locking mechanism and the semi-rod body are interchanged. For example, the pins extending upward are provided on the inner side of the semi-rod body, and two surrounding structures are provided on the locking mechanism that are oppositely arranged in the tightening and loosening direction. Insertion positions of the present utility model are formed within both of the two surrounding structures. In this way, the pins are provided on the semi-rod body while the insertion positions are provided on the locking mechanism. During the process of inserting the locking mechanism onto the vertical rod, the surrounding structures surround the pins from the outside, and the pins are inserted into the insertion positions within the surrounding structures.

[0096] In addition, the first embodiment of the limit base and other embodiments using wedge-shaped components are not suitable for setting the vertical rod in a split form.

[0097] In addition, in the embodiment adopting the integrated hollow vertical rod, the vertical rod can also be used as an outer positioning sleeve for smaller steel pipes or steel bars.

[0098] In other embodiments, the split vertical rods are arranged in the manner shown in the first embodiment, or the vertical rods are integrally arranged on the first component or the second component in the manner of the third embodiment or the fourth embodiment. Or, the first component and the second component are arranged in the manner of the first embodiment to be suitable for cooperation with the flange, or the first component and the second component are arranged in the manner of the fourth embodiment to be suitable for cooperation with the lower flange. All these other embodiment manners are within the scope of protection claimed in the present utility model.

[0099] The ninth embodiment of the limit base

[0100] See Figure 12 , in this embodiment, insertion positions 67 are provided on the inner walls of both half rods. When the two half rods are fitted together, the two insertion positions 67 are staggered in the length direction. When the two half rods approach and fit together in the tightening and loosening direction, the two insertion positions 67 overlap at least partially in the vertical direction, so that when viewed in the length direction, the two insertion positions 67 can be penetrated by the same insertion pin.

[0101] The locking mechanism only includes one insertion pin 66. The insertion pin 66 is partially in the shape of an arrow pointing downward. One side or both sides of the insertion pin 66 in the tightening and loosening direction are inclined surfaces 661. The projection of the cross section of the insertion pin 66 from bottom to top gradually increases in the tightening and loosening direction. When the insertion pin 66 is arranged in the two insertion positions 67 that overlap partially, due to the inclined inclined surfaces 661 on one side or both sides of the insertion pin 66, a pressing force in the direction of approaching in the tightening and loosening direction will be generated on the insertion positions 67, causing the two insertion positions 67 to have a tendency to approach each other in the tightening and loosening direction. As the insertion pin 66 is gradually inserted, a locked state is finally reached, and the two half rods are fitted together.

[0102] In addition, in this embodiment, the inner walls of the two insertion positions 67 on the side far from their respective half rods are also provided as inner inclined surfaces 671 to make the process of inserting the insertion pin 66 smoother.

[0103] The tenth embodiment of the limit base

[0104] See Figure 13, in this embodiment, compared with the ninth embodiment, the locking mechanism further includes a first engaging portion 663. The first engaging portion 663 and the pin 66 are two triangular structures with opposite directions. The first engaging portion 663 is provided at the tail of the locking mechanism in the inserting direction opposite to the pin. Second engaging portions 662 are provided at positions corresponding to the first engaging portion 663 along the tightening and loosening direction on the inner sides of the two half-rods. Among them, the first engaging portion 663 is located at the center, and the two second engaging portions 662 are located on both sides. When the pin forces the two half-rods to cooperate through its inclined surface 665, the two second engaging portions 662 will gradually approach the first engaging portion 663 along the tightening and loosening direction and finally cooperate with the first engaging portion 663.

[0105] It should be noted that at least one of the four side surfaces where the first engaging portion 663 and the two second engaging portions 662 cooperate is set as a slope surface 664 inclined to the length direction. The inclination direction of the slope surface 664 is opposite to that of the inclined surface 665 of the pin, that is, the slope surface 664 and the inclined surface 665 are inclined in two directions along the length direction by less than ninety degrees. In particular, in this embodiment, the first engaging portion 663 is set in the form of an arrow opposite to the pin, and the engaging surfaces of the two second engaging portions 662 are also set in the corresponding form. Through this kind of cooperation, the locking mechanism and the two half-rods can be more firmly combined.

[0106] In addition, it should be noted that in order to make the cooperation between the first component and the second component more stable, when it comes to the case where the pin provided by the locking mechanism cooperates with the insertion position, at least one first engaging portion can be provided on the locking mechanism, and a second engaging portion capable of supporting the first engaging portion to prevent the half-rod from tilting and deforming can be provided on the half-rod, so that the limiting base component is more firmly and reliably combined.

[0107] Limiting Base Eleventh Embodiment

[0108] As Figure 14 and Figure 15 shown, the limiting base of this embodiment includes a first component 71 and a second component 72 that are symmetric left and right, and a locking mechanism 73 connected between the first component 71 and the second component 72. The first component 71 and the second component 72 are bent more than ninety degrees on the side away from the symmetry plane and respectively form a first buckle 711 and a second buckle 721. Through the hooking action of the first buckle 711 and the second buckle 721, the first component 71 and the second component 72 can approach inward along the tightening and loosening direction perpendicular to the symmetry plane to hook and fix to the steel beam, or can be separated outward along the tightening and loosening direction to be removed from under the steel beam.

[0109] At positions opposite to each other along the tightening and loosening direction on the upper parts of the first component 71 and the second component 72, engaging portions 712 are provided. The locking mechanism 73 is bifurcated into two limiting portions 731 with the first ends connected and the second ends separated from each other. AsFigure 14 and Figure 15 As shown in Figure 15 , the two limiting parts 731 are integrally produced to form a diverging structure. The two engaging parts 712 of this embodiment are plates inclined in the height direction.

[0110] Along the tightening and loosening direction of the first component 71 and the second component 72, the inner sides 7311 of the two limiting parts 731 facing the direction of approaching the first component 71 and the second component 72 respectively cooperate with the outer sides 7121 of the corresponding two engaging parts 712 to limit the two engaging parts 712 and their corresponding first component 71 and second component 72 from moving away from each other, and limit the first component 71 and the second component 72 between the two limiting parts 731, so as to firmly fix the limiting base on the steel beam.

[0111] In addition, along the tightening and loosening direction, the inner sides 7311 of the two limiting parts 731 and the outer sides 7121 of the two engaging parts 712, a total of four sides, are all set as inclined surfaces. The combination manner of the locking mechanism 73, the first component 71 and the second component 72 in combination with the orientation of the attached drawings is as follows: First, the first component 71 and the second component 72 are brought closer along the tightening and loosening direction and hooked on the steel beam, and then the locking mechanism 73 is clamped on the outer sides 7121 of the two engaging parts 712 from top to bottom.

[0112] During the clamping process, the four sides being set as inclined surfaces will greatly increase the convenience of clamping. Due to the existence of the inclined surfaces, when the limiting part 731 is clamped downward, it will generate an inward forcing force along the tightening and loosening direction on the engaging part 712, forcing the first component 71 and the second component 72 to be closely combined. And due to the different sizes of the steel beams, through the inclined surfaces, the limiting part 731 can cooperate with the engaging part 712 at different positions, so that the first component 71 and the second component 72 can maintain different spacings and be closely combined with the I-beam or H-shaped steel. It should be noted that, in order to achieve the above effects, the projection of the inclined surface on the horizontal plane from top to bottom extends outward along the tightening and loosening direction.

[0113] More importantly, after the installation of the limiting base is completed, the engaging part 712 and the limiting part 731 form a supporting structure for sleeving and cooperating with the pipe fittings. This supporting structure is equivalent to the vertical pole in the above other embodiments. At this time, pipe fittings such as steel pipes can be sleeved on the supporting structure, and the locking mechanism 73 and the two engaging parts 712 are both sleeved inside the inner pipe wall of the steel pipe.

[0114] The Twelfth Embodiment of the Limiting Base

[0115] As Figure 16 and Figure 17As shown, compared with the previous embodiment, in the longitudinal direction of the elastic member, guide grooves 7422 are provided in both engaging portions 742. The two limiting portions 761 are respectively engaged with the two guide grooves 7422. During the assembly process, the limiting portions 761 can be inserted along the guide grooves 7422. The outer sides 7421 of the guide grooves 7422 in the longitudinal direction of the elastic member are in abutting engagement with the inner sides 7611 of the two limiting portions 761 in the longitudinal direction of the elastic member, restricting the first member 74 and the second member 75 from moving away from each other. The groove walls on both sides of each guide groove 7422 can restrict the limiting portions 761 from moving along the two sides perpendicular to the insertion direction of the limiting portions 761 in the direction perpendicular to the longitudinal direction of the elastic member, that is, perpendicular to the extending direction of the guide grooves 7422, preventing the limiting portions 761 from slipping during the assembly process and resulting in unstable assembly.

[0116] Meanwhile, the outer edges of the two limiting portions 761, the two engaging portions 742, and the outward extension of the limiting groove need to be kept within a horizontal circle as much as possible to avoid the steel pipe tilting after being inserted.

[0117] In addition, in this embodiment, the groove walls of the guide grooves 7422 do not necessarily need to protrude outward from the engaging portions 742 in the longitudinal direction of the elastic member, and can also be recessed inward from the engaging portions 742 in the longitudinal direction of the elastic member, as long as the limiting portions 761 can be conveniently inserted into the guide grooves 7422 and there are side walls in the guide grooves 7422 for engaging with the inner sides of the limiting portions 761 in the longitudinal direction of the elastic member.

[0118] The thirteenth embodiment of the limiting base

[0119] See Figure 18 , compared with the twelfth embodiment, in this embodiment, the locking mechanism further branches out a positioning portion 782 between the two limiting portions 781. The two limiting portions 781 and the positioning portion 782 are arranged at intervals. The two sides of the positioning portion 782 in the longitudinal direction of the elastic member are inclined to form an inclined surface consistent with the inner sides of the two limiting portions 781 in the longitudinal direction of the elastic member. The positioning portion 782 and the two limiting portions 781 on both sides form two engaging grooves 783 that can be engaged with the two engaging portions 772. When the locking mechanism cooperates and fixes the first member and the second member, the tops of the two engaging portions 772 are aligned with the two engaging grooves 783 formed by the locking mechanism. When the locking mechanism is inserted downward in the longitudinal direction, the two engaging portions 772 will move along the extending direction of the engaging grooves 783, and finally force the first member and the second member to approach and cooperate. The positioning portion 782 between the two engaging portions 772 can support the two engaging portions 772 from the inner sides of the two engaging portions 772, preventing deformation under the acting force.

[0120] In addition, it should be noted that in order to make the cooperation between the first member and the second member more stable, in all the above embodiments where the cooperation and fixing method of the two pins is involved, the positioning portion 782 described in this embodiment can be provided between the two pins to play a supporting role for the two pins.

[0121] The Fourteenth Embodiment of the Limit Base

[0122] Refer to Figure 19 , the limit base is integrally designed and includes a first part 81 and a second part 82 that are bifurcated. The first part 81 and the second part 82 are respectively bent to form a first buckle 811 and a second buckle 821. The first part 81 and the second part 82 are arranged oppositely along the tightening direction, and the first buckle 811 and the second buckle 821 are arranged oppositely along the tightening direction. The first part 81 and the second part 82 are connected by a bending part 83, and the bending part 83 protrudes upward to form a supporting structure for sleeving and cooperating with the pipe fitting. The bending part 83 has a certain elastic deformation ability, and the first part 81 and the second part 82 can move away from or close to each other along the tightening direction through their elastic structures, so as to be conveniently installed on the I-beam.

[0123] The Fifteenth Embodiment of the Limit Base

[0124] Refer to Figure 20 , in this embodiment, the limit base is of an integrated design form. To enable the limit base to be conveniently installed on the I-beam and closely cooperate with the I-beam, the bending part 86 connecting the first part 84 and the second part 85 includes a top end 861 that is far from the first buckle 841. Along the supporting direction of the bending part 86, at least one planar dimension of the bending part 86 gradually becomes smaller to the top end 861. The bending part 86 gradually becomes larger from the top end 861 along the reverse direction of the supporting direction. Using this gradually increasing dimension, after the pipe fitting is sleeved to a certain extent, it can be firmly combined with the bending part. This setting is suitable for cooperating with a variety of pipe fittings with different inner diameters. It should be noted that the planar dimension in this embodiment and other embodiments refers to the outer dimension size of the bending part in multiple directions of the plane perpendicular to the supporting direction.

[0125] The Sixteenth Embodiment of the Limit Base

[0126] Refer to Figure 21 , similar to the fifteenth embodiment, the bending part not only gradually becomes smaller in planar dimension along the supporting direction to the top end, which is convenient for sleeving pipe fittings of different sizes, but also the top of the bending part 87 is designed in a flat-top form, which is more convenient for production and processing.

[0127] The Seventeenth Embodiment of the Limit Base

[0128] Refer to Figure 22 , in this embodiment, to enable the limit base to be more conveniently installed on the I-beam, in addition to designing the supporting structure to become smaller along the supporting direction, it can also be designed such that the bending part connecting the tops of the first part 88 and the second part 89 includes at least two bending places 90. The top of the limit base in this embodiment is provided with two bending places 90, and the connection between the bending places 90 is also designed to be arc-shaped, which is convenient for the first part 88 and the second part 89 to open and close.

[0129] The eighteenth embodiment of the limit base

[0130] See Figure 23 , in this embodiment, the limit base is provided with two bending parts 91, and from the top 921 to the bottom 922 of the bending part 92, the dimension of the bending part 92 in the tightening and loosening direction gradually decreases. However, the dimension of the bending part 92 in the third direction perpendicular to the tightening and loosening direction and the standing direction is consistent from the top 921 to the bottom 922 along the standing direction.

[0131] When the limit base is fixed to the I-beam or H-shaped steel, since the bottom end 922 of the bending part 92 in the tightening and loosening direction is smaller, the dimension of the bottom end 922 of the bending part 92 will not exceed the top end 921 when the first part and the second part are relatively far apart, and the pipe fitting set can be directly inserted to the bottom end 922 of the bending part 92, which is more convenient for sleeving.

[0132] It should be noted that the dimension of the bending part 92 in the tightening and loosening direction and the dimension in the third direction are the outer dimensions of the bending part 92 along this direction.

[0133] The nineteenth embodiment of the limit base

[0134] See Figure 24 , in this embodiment, the limit base is provided with four bending parts 93, which is also beneficial to realizing the elastic opening and closing of the first part 94 and the second part 95.

[0135] The twentieth embodiment of the limit base

[0136] See Figure 25 , the form of the standing structure formed at the connection of the first part 96 and the second part 97 of the limit base in this embodiment is not limited to a plate shape, and can also be in the form of a cylinder, etc., and the top is designed to be connected in a spherical form 98, which can cooperate better with the pipe fitting set.

[0137] The twenty-first embodiment of the limit base

[0138] See Figure 26 , in this embodiment, a support block 99 is further provided at the relative position on the inner side of the first part 817 and the second part 818 along the tightening and loosening direction. The purpose of setting the support block 99 is to increase the contact area between the steel pipe and the base.

[0139] It should be emphasized that in the above embodiments, all those related to the vertical pole and the semi-pole body are not limited to the cylindrical or semi-circular shapes, and can exist in various forms such as square columns and polygonal columns.

[0140] In other embodiments, the dimension of the bending part in the tightening and loosening direction remains unchanged.

[0141] Finally, it should be emphasized that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A position limiting base, comprising a first component, a second component and a locking mechanism connected between the first component and the second component, wherein the first component is bent to form a first buckle position; Features: The second component is bent to form a second buckle position, the first component and the second component are arranged opposite to each other along a tightening direction, and the first buckle position and the second buckle position are opposite to each other along the tightening direction; When the locking mechanism is locked, the second component cannot move away from the first component under the restriction of the locking mechanism, and the locking mechanism can be unlocked after translational movement; The position limiting base further comprises a vertical rod, and the vertical rod comprises two half rod bodies separated from each other, and the two half rod bodies are respectively fixedly connected to the first component and the second component.

2. The limiting base according to claim 1, characterized in that: The locking mechanism is arranged between the inner sides of the two half rod bodies; When the locking mechanism is placed between the inner sides of the two half-rod bodies along the length direction of the vertical rod, at least one of the half-rod bodies is forced to approach the other half-rod body along the tightening direction by the wedge surface structure.

3. The limiting base according to claim 2, characterized in that: The locking mechanism comprises two pins connected at the upper ends and separated from each other at the lower ends, an insertion position is arranged on the inner side of the half rod body, and the two pins are respectively matched with the two insertion positions; or, the locking mechanism comprises two insertion positions, a pin is arranged on the inner side of the half rod body, and the two pins are respectively matched with the two insertion positions; The outer surface of at least one of the pins or the inner surface of at least one of the insertion positions is arranged as an inclined surface inclined to the length direction, and the wedge surface structure includes the inclined surface.

4. The limiting base according to claim 3, characterized in that: The plug pin and the plug position both extend in a direction inclined to the length direction, and the outer circumference size of the plug pin is completely matched with the inner circumference size of the plug position.

5. The limiting base according to claim 2, characterized in that: The locking mechanism comprises a pin, an insertion position is arranged on the inner side of the half rod, and the two insertion positions are staggered in the length direction. When the two half rods are matched along the loosening direction, the two insertion positions overlap at least a part in the length direction, and the pin is matched with the two insertion positions in sequence along the length direction; The pin is arranged on one or both sides of the tightening direction to form an inclined surface inclined to the length direction, and the wedge surface structure includes the inclined surface.

6. The limiting base according to claim 5, characterized in that: The locking mechanism comprises a first matching portion, and a second matching portion is arranged on the inner side of the half rod body. When the pin forces the two half rod bodies to match, the two second matching portions gradually move toward the first matching portion along the tightening direction and finally match with the first matching portion. The side surfaces of the first matching portion and at least one of the two second matching portions are arranged to be sloped surfaces inclined to the length direction, and the inclined surface is in an opposite direction to the sloped surface.

7. A position limiting base, comprising a first component, a second component and a locking mechanism connected between the first component and the second component, wherein the first component is bent to form a first buckle position; Features: The second component is bent to form a second buckle position, the first component and the second component are arranged opposite to each other along a tightening direction, the first buckle position and the second buckle position are opposite to each other along the tightening direction, and the first component and the second component are slidably connected along the tightening direction; The locking mechanism includes a wedge-shaped component wedged between the first component and the second component. The wedge-shaped component can unlock the locking mechanism after translational movement. When the locking mechanism is locked, the second component cannot move away from the first component under the restriction of the locking mechanism.

8. The limiting base according to claim 7, characterized in that: The locking mechanism comprises at least two wedge-shaped components having different sizes and / or different oblique angles in the tightening and loosening direction, and the wedge-shaped components are detachably mounted.

9. A position limiting base, comprising a first component, a second component and a locking mechanism connected between the first component and the second component, wherein the first component is bent to form a first buckle position, Features: The second component is bent to form a second buckle position, the first component and the second component are arranged opposite to each other along a tightening direction, and the first buckle position and the second buckle position are opposite to each other along the tightening direction; The first component and the second component are both provided with a clamping portion, and the two clamping portions are opposite to each other along the tightening direction; The locking mechanism comprises two limit parts which are bifurcated and arranged, and along the loosening and tightening direction, the two engaging parts are restricted between the two limit parts, thereby restricting the first component and the second component from moving away from each other; The engaging portion and the limiting portion constitute a supporting structure for fitting together with the pipe fitting.

10. The limiting base according to claim 9, characterized in that: The locking mechanism comprises a positioning portion which is arranged between the two limiting portions at intervals, and the positioning portion is arranged between the two engaging portions and supports the two engaging portions.

11. The limiting base according to claim 9, characterized in that: In the tightening direction, at least one side surface of the outer sides of the two engaging portions and the inner sides of the two limiting portions is configured as an inclined surface.

12. The limiting base according to any one of claims 9 to 11, characterized in that: At least one of the engaging parts is provided with a guide groove, and the limiting parts cooperate with the guide grooves respectively. The guide grooves limit the movement of the limiting parts from a first direction, and the first direction is perpendicular to the loosening direction and the extending direction of the guide grooves.

13. The limiting base is characterized by: It comprises a first part and a second part which are bifurcated, the first part is bent to form a first buckle position, the second part is bent to form a second buckle position, the first part and the second part are arranged opposite to each other along a tightening direction, and the first buckle position and the second buckle position are arranged opposite to each other along the tightening direction; The first part and the second part are connected by a bent portion, and the bent portion is convexly arranged to form a supporting structure for fitting with a pipe fitting; The elastic deformation of the bent portion can change the distance between the first portion and the second portion in the loosening or tightening direction.

14. The limiting base according to claim 13, characterized in that: The bent portion includes a top end away from the first buckle position and a bottom end close to the first buckle position; Along the supporting direction of the curved portion, at least one planar dimension of the curved portion gradually decreases to the top end; or, the dimension of the curved portion in the tightness direction gradually decreases from the top end to the bottom end; or, the dimension of the curved portion in the tightness direction remains unchanged.

15. The limiting base according to claim 13 or 14, characterized in that: The bent portion includes at least two bending points.

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