Double-shaft double-spring hinge type elastic fixator

Abstract

The invention relates to the technical field of construction of an overhead line system embedded channel in a tunnel, in particular to a double-shaft double-spring hinge type elastic fixator which comprises a base, a horizontal guide rod frame, two vertical guide rods, a hinge type movable clamping groove and two springs, and the base is provided with two vertical sleeves and two horizontal sleeves; the horizontal guide rod frame comprises two horizontal guide rods, and each horizontal guide rod is arranged in a horizontal sleeve of the base in a sliding manner; each vertical guide rod is arranged in a vertical sleeve of the base in a sliding manner; and each spring is sleeved on one vertical guide rod and is positioned between the base and the hinge type movable clamping groove. According to the fixing device, the pre-buried channel is directly welded or bound on the secondary lining reinforcing mesh through the elastic fixing device, so that the situation that holes are formed in a tunnel secondary lining trolley is avoided, and the trolley cannot be damaged; the fixing mode is rapid, line production does not occupy the construction time of the secondary lining trolley, the construction work efficiency and the accuracy of the installation position are improved, then the engineering construction quality is improved, and the construction period is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel contact network pre-embedded channel construction, in particular to a double-shaft double-spring combined leaf type elastic fixing device. BACKGROUND

[0002] At present, with the rapid development of rail transit, tunnel construction as an important part of rail transit engineering, its construction quality is directly related to the safe and stable operation of the entire rail transit system. In the construction of rail transit tunnel, the installation quality of contact network pre-embedded channel is the most important, and its installation precision is like the cornerstone of the building, which plays a decisive role in the installation of subsequent power supply equipment and operation safety.

[0003] The contact network pre-embedded channel is a key component for fixing the contact network equipment, which needs to be pre-embedded during the construction of tunnel secondary lining, providing accurate positioning and reliable support for the installation of subsequent contact network equipment. Once the installation of pre-embedded channel deviates, it will lead to the inaccurate installation of contact network equipment, and then affect the power quality of train, and even may cause safety accidents. For example, if the position deviation of pre-embedded channel is too large, it may cause uneven contact pressure between contact network equipment and train pantograph, accelerate the wear of pantograph, and reduce the power quality; if the angle deviation of pre-embedded channel is too large, it may cause the installation angle of contact network equipment not to meet the design requirements, affecting the normal operation of train.

[0004] However, at present, many pre-construction units in front of the tunnel have many problems to be solved in the installation and fixation of contact network pre-embedded channel foundation.

[0005] From the perspective of installation and fixation scheme, construction units generally lack perfect scheme. Tunnel construction environment has particularity, narrow construction space and insufficient light, which brings great difficulty to the installation of pre-embedded channel. In the narrow tunnel space, the construction personnel are inconvenient to operate, and it is difficult to use large and accurate installation equipment, and can only rely on some simple tools and experience to install. This leads to the difficulty in accurately controlling the position, angle and other aspects of pre-embedded channel during installation.

[0006] In actual operation, construction personnel often determine the position of the embedded channel only by visual observation and simple measuring tools, and it is difficult to ensure that the installation accuracy meets the design requirements. For example, when determining the horizontal position of the embedded channel, due to the dim light in the tunnel and the uneven ground, it is difficult for the construction personnel to accurately determine whether the channel is in a horizontal state, and horizontal deviation is likely to occur. When determining the vertical position, due to the high tunnel vault, the construction personnel cannot directly reach the vault for accurate measurement, and can only estimate through some indirect methods, resulting in common vertical deviation. These deviations accumulate, and it is easy to cause mis-embedding, missing embedding, or serious embedding errors exceeding the allowed range. Once these problems occur, subsequent rectification work will be very tedious, not only increasing construction costs, but also delaying the construction period.

[0007] From the aspect of inspection and review after installation is completed, the construction environment and space are also not conducive to comprehensive and accurate inspection of the installation quality of the embedded channel. After the installation of the embedded channel is completed, due to the limited space in the tunnel, it is difficult for the construction personnel to enter some narrow areas to carefully inspect the embedded channel. Moreover, the light conditions in the tunnel are poor, and even if lighting equipment is used, it is difficult to clearly observe the details of the embedded channel. This makes it difficult to comprehensively and accurately inspect the installation quality of the embedded channel, and some potential problems may not be discovered in time.

[0008] Once the embedded channel does not meet the requirements in the subsequent construction process, rectification is extremely difficult. Currently, for the case that the embedded channel does not meet the requirements, the power supply equipment operation and management unit usually requires the removal of the tunnel secondary lining and the re-embedding of the channel. This requires a series of complex and high-cost rectification work such as chiseling the tunnel secondary lining concrete, re-embedding the channel, and then pouring new concrete. Chiseling the tunnel secondary lining concrete not only damages the structural integrity of the tunnel, but also may affect the surrounding soil and structure, increasing the construction risk. Re-embedding the channel and pouring new concrete require a series of procedures such as measurement, positioning, installation, etc., consuming a large amount of manpower, material resources and financial resources. Moreover, the rectification work will also seriously affect the project progress, causing the delivery time of the entire rail transit project to be delayed.

[0009] In summary, it is urgent to develop a pre-embedded channel construction technology and device that can effectively solve the above problems. SUMMARY

[0010] In order to solve the above problems, the application provides a double-shaft double-spring hinge-type elastic fixator, which directly welds or binds a pre-embedded channel on a secondary lining steel mesh by using the elastic fixator, avoids opening holes on a secondary lining trolley, and does not damage the trolley; meanwhile, the fixing method is relatively fast, does not occupy the secondary lining trolley construction time in flow operation, improves the construction work efficiency and the installation position accuracy, and further improves the engineering construction quality and shortens the construction period.

[0011] The technical scheme of the application is as follows:

[0012] The double-shaft double-spring hinge-type elastic fixator comprises:

[0013] A base is provided with two vertical sleeves and two horizontal sleeves;

[0014] A horizontal guide rod frame comprises two horizontal guide rods, and each horizontal guide rod is slidably arranged in the horizontal sleeve of the base;

[0015] Two vertical guide rods are slidably arranged in the vertical sleeves of the base;

[0016] A hinge-type movable clamping groove comprises two U-shaped clamping groove halves, a hinge and an L-shaped reinforcing steel bar, the two U-shaped clamping groove halves are connected by the hinge to form a U-shaped clamping groove, the L-shaped reinforcing steel bar is fixedly connected to the shaft end of the hinge, and the top of each U-shaped clamping groove half is fixedly connected with a vertical guide rod;

[0017] Two springs are sleeved on the vertical guide rods and located between the base and the hinge-type movable clamping groove.

[0018] Further, the base comprises a first vertical sleeve, a second vertical sleeve, a first horizontal sleeve and a second horizontal sleeve, and the second vertical sleeve, the first horizontal sleeve and the second horizontal sleeve are fixedly connected to the first vertical sleeve.

[0019] Further, the horizontal guide rod frame is fixedly connected by a first horizontal guide rod and a U-shaped frame body, the U-shaped frame body comprises a second horizontal guide rod and a connecting rod, two connecting rods are arranged at two ends of the second horizontal guide rod, and two ends of the first horizontal guide rod are fixedly connected with the two connecting rods.

[0020] Further, one end of the vertical guide rod is fixedly connected to the top of the U-shaped clamping groove half, the other end is provided with a pin hole, and the vertical guide rod is installed with a split pin in the pin hole after passing through the vertical sleeve.

[0021] Further, a gasket is arranged between the vertical sleeve and the split pin.

[0022] Specifically, the hinge is composed of a hinge male piece, a hinge female piece and a rotating shaft, the hinge male piece is fixedly connected with the rotating shaft, and the rotating shaft is rotatably connected with the hinge female piece.

[0023] Further, the hinge female piece is provided with rotating holes at two ends, the rotating shaft is composed of a stop block and a rotating shaft body, the outer diameter of the stop block is larger than the inner diameter of the rotating hole, the rotating shaft body passes through the rotating holes at the two ends of the hinge female piece, and the stop block is installed at the end of the rotating shaft body, and the middle part of the rotating shaft body is fixedly connected with the hinge male piece.

[0024] Further, the end of the rotating shaft body away from the stop block is provided with a pin hole, and the open pin is installed in the pin hole after the stop block is installed on the rotating shaft body.

[0025] Further, the compression stroke of the spring is not less than 80mm.

[0026] Further, the adjustable stroke of the horizontal guide rod in the horizontal sleeve is .

[0027] The beneficial effects of the present application are:

[0028] 1. The double-shaft double-spring hinge type elastic fixator disclosed in the present application avoids opening holes on the tunnel secondary lining trolley and does not cause damage to the trolley by directly welding or binding the pre-buried channel on the secondary lining steel mesh using the elastic fixator, and simultaneously, the fixing method is relatively fast, does not occupy the secondary lining trolley construction time in flow operation, improves the construction work efficiency and the accuracy of the installation position, and further improves the engineering construction quality and shortens the construction period.

[0029] 2. The double-shaft double-spring hinge type elastic fixator disclosed in the present application is convenient to check and adjust, the elastic fixator assembly can be fixed on the pre-buried channel in advance, is directly and stably fixed on the secondary lining steel mesh, and can be installed before the tunnel secondary lining trolley is positioned, thereby providing sufficient space and time for checking whether the type and installation position of the pre-buried channel meet the technical requirements.

[0030] 3. The double-shaft double-spring hinge type elastic fixator disclosed in the present application avoids the problems of pre-buried channel burying too deep or too shallow by setting the compression of the compression spring, effectively prevents the occurrence of construction common faults such as channel deflection, inclination and spacing not meeting the design requirements during tunnel secondary lining cement grouting, and ensures the accurate pre-buried of the pre-buried channel.

[0031] 4. The double-shaft double-spring leaf type elastic fixing device disclosed in the application adopts the clamping setting of the elastic fixing device assembly, avoids direct spot welding or fixing on the tunnel second lining trolley template through T-shaped bolts, prevents damage to the galvanized anticorrosive layer of the embedded channel caused by forced demolding during demolding and descending, and prolongs the service life of the embedded channel.

[0032] 5. The double-shaft double-spring leaf type elastic fixing device disclosed in the application directly welds or binds the embedded channel on the second lining steel bar net through the elastic fixing device, provides convenience for flow operation, allows sufficient time and space for 100% self-checking and rechecking, and reduces the error rate.

[0033] 6. The double-shaft double-spring leaf type elastic fixing device disclosed in the application has the functions of automatic trimming and fine adjustment, is suitable for installing straight channels at the lower ends of both sides, and can make the embedded channel and the surface of the second lining trolley tightly abut and densely adhere during concrete pouring in the case that the axis in the traditional fixing device cannot be aligned with the center of the arc of the concrete surface.

[0034] 7. The double-shaft double-spring leaf type elastic fixing device disclosed in the application, the freely rotatable L-shaped reinforcing steel bar makes the fixing device clamping groove and the embedded channel more closely adhere, and further enhances the stability and precision of the embedded channel. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a three-dimensional structure schematic diagram of the double-shaft double-spring leaf type elastic fixing device of the embodiment of the application.

[0036] Figure 2 It is a three-dimensional explosion schematic diagram of the double-shaft double-spring leaf type elastic fixing device of the embodiment of the application.

[0037] Figure 3 It is a three-dimensional structure schematic diagram of the horizontal guide rod frame of the double-shaft double-spring leaf type elastic fixing device of the embodiment of the application.

[0038] Figure 4 It is a three-dimensional structure schematic diagram of the base of the double-shaft double-spring leaf type elastic fixing device of the embodiment of the application.

[0039] Figure 5 It is a three-dimensional structure schematic diagram of the vertical guide rod of the double-shaft double-spring leaf type elastic fixing device of the embodiment of the application.

[0040] Figure 6 It is a three-dimensional structure schematic diagram of the hinge type movable clamping groove of the double-shaft double-spring leaf type elastic fixing device of the embodiment of the application.

[0041] Figure 7 This is a three-dimensional exploded view of the hinge in the hinge-type movable slot of the dual-axis dual-spring hinge-type elastic retainer according to an embodiment of the present invention;

[0042] The components represented by the various reference numerals in the diagram are:

[0043] This invention comprises: 1. a horizontal guide rod frame; 11. a first horizontal guide rod; 12. a second horizontal guide rod; 13. a connecting rod; 2. a base; 21. a first vertical sleeve; 22. a second vertical sleeve; 23. a first horizontal sleeve; 24. a second horizontal sleeve; 3. a vertical guide rod; 4. a spring; 5. a hinge-type movable slot; 51. a U-shaped slot half; 52. a hinge; 521. a male hinge piece; 522. a female hinge piece; 523. a rotating shaft; 53. an L-shaped reinforcing steel bar; 54. a baffle plate; 55. a first cotter pin; 6. a second cotter pin; and 7. a washer. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0045] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0046] like Figure 1 and Figure 2 As shown, the dual-axis, dual-spring hinged elastic fastener mainly includes a horizontal guide rod frame 1, a base 2, a vertical guide rod 3, a spring 4, and a hinged movable slot 5.

[0047] Base 2 is the basic support part of the entire elastic fixation device, such as... Figure 4As shown, it includes a first vertical sleeve 21, a second vertical sleeve 22, a first horizontal sleeve 23 and a second horizontal sleeve 24; the second vertical sleeve 22, the first horizontal sleeve 23 and the second horizontal sleeve 24 are fixedly connected on the first vertical sleeve 21, forming a stable structure; the base 2 can provide support and guiding effect for the vertical guide rod 3 and the horizontal guide rod frame 1; in actual application, the material of the base 2 is usually high-strength steel to ensure that it can withstand the force transmitted by the vertical guide rod 3 and the horizontal guide rod frame 1, and various stresses generated during the concrete pouring process.

[0048] As shown in Figure 3 , the horizontal guide rod frame 1 is fixedly connected by the first horizontal guide rod 11 and the U-shaped frame body; the U-shaped frame body includes the second horizontal guide rod 12 and the connecting rod 13, two connecting rods 13 are respectively arranged at both ends of the second horizontal guide rod 12, and both ends of the first horizontal guide rod 11 are fixedly connected with the two connecting rods 13.

[0049] Each horizontal guide rod is slidably arranged in the horizontal sleeve of the base 2, that is, the first horizontal guide rod 11 and the second horizontal guide rod 12 are respectively inserted into the first horizontal sleeve 23 and the second horizontal sleeve 24; the horizontal guide rod frame 1 can be adjusted in the horizontal direction, so as to realize the position adjustment of the elastic fixer in the line direction. In the actual construction process, the horizontal guide rod frame 1 is welded or tied with the tunnel secondary lining steel, and the pre-embedded channel is precisely positioned by pre-positioning the pre-embedded channel on the secondary lining steel.

[0050] The vertical guide rod 3 has two, each vertical guide rod 3 is slidably arranged in the vertical sleeve of the base 2, that is, respectively inserted into the first vertical sleeve 21 and the second vertical sleeve 22; one end of the vertical guide rod 3 is fixedly connected at the top of the U-shaped slot half body 51, and the other end is provided with a pin hole, as shown in Figure 5 ; the vertical guide rod 3 is installed with the second split pin 6 in the pin hole after penetrating the vertical sleeve, so as to prevent the vertical guide rod 3 from being pulled out of the vertical sleeve; a gasket 7 is arranged between the vertical sleeve and the second split pin 6, and the gasket 7 increases the contact area, reduces the stress concentration, and prevents the vertical guide rod 3 and the vertical sleeve from being damaged; the material of the vertical guide rod 3 is also high-strength steel to ensure that it can withstand the force transmitted by the pre-embedded channel and the spring 4, and realize stable sliding in the vertical direction.

[0051] As shown in Figure 6As shown, the hinge type movable clamping groove 5 includes two U-shaped clamping groove halves 51, a hinge 52 and an L-shaped reinforcing steel bar 53; the two U-shaped clamping groove halves 51 are connected by the hinge 52 to form a U-shaped clamping groove for fixing the embedded channel.

[0052] As shown, Figure 7 The hinge 52 is composed of a hinge male piece 521, a hinge female piece 522 and a rotating shaft 523, the hinge male piece 521 is fixedly connected with the rotating shaft 523, and the rotating shaft 523 is rotatably connected with the hinge female piece 522. Both ends of the hinge female piece 522 are provided with rotating holes, the rotating shaft 523 is composed of a stop block and a rotating shaft body, the outer diameter of the stop block is larger than the inner diameter of the rotating hole, the rotating shaft body passes through the rotating holes at both ends of the hinge female piece 522, a stop piece 54 is installed at the end of the rotating shaft body, the middle part of the rotating shaft body is fixedly connected with the hinge male piece 521; a pin hole is arranged at the end of the rotating shaft body away from the stop block, and a first split pin 55 is installed in the pin hole after the stop piece 54 is installed on the rotating shaft body, so as to prevent the stop piece 54 from falling off; the L-shaped reinforcing steel bar 53 is fixedly connected at the end of the rotating shaft 523 of the hinge 52, which is used to strengthen and fix the anchor rod of the embedded channel by welding or binding, so as to improve the stability of the embedded channel; the design of the hinge type movable clamping groove 5 makes the clamping groove have the functions of automatic trimming and automatic fine adjustment, and is especially suitable for installing straight channels at the lower ends of both sides, because the central axis of the traditional fixed device cannot be aligned with the center of the arc of the concrete surface at this time, and the adjustable clamping groove and the double spring have greater elasticity, so that the embedded channel and the surface of the secondary lining trolley can be tightly pressed and closely attached during concrete pouring.

[0053] The spring 4 has two, each spring 4 is sleeved on a vertical guide rod 3 and located between the base 2 and the hinge type movable clamping groove 5; the compression stroke of the spring 4 is not less than 80mm, which is used to provide elastic force in the vertical direction, so that the surface of the embedded channel fixed by the hinge type movable clamping groove 5 is closely attached to the surface of the secondary lining trolley, so that separation does not occur during concrete pouring, and the channel is prevented from sinking into the concrete too deeply; the material of the spring 4 is usually selected to be alloy steel with good elasticity and durability, so as to ensure that it can maintain stable elastic performance during long-term use.

[0054] The working principle of the double-shaft double-spring hinge type elastic fixing device is as follows:

[0055] (1) Adjustment and fixation in the vertical direction

[0056] The vertical guide rod 3 can slide in the vertical sleeve. When the embedded channel is displaced by external force or during concrete pouring, the vertical guide rod 3 will slide up and down in the vertical sleeve. The spring 4 is sleeved on the vertical guide rod 3 to provide elastic force in the vertical direction. The surface of the embedded channel is tightly fitted with the surface of the second lining trolley through the elastic force of the spring 4, so as to ensure the stability of the embedded channel in the vertical direction.

[0057] (II) Adjustment and fixation in horizontal direction

[0058] The horizontal guide rod frame 1 can slide in the horizontal sleeve. By adjusting the position of the horizontal guide rod frame 1 in the horizontal sleeve, the position of the elastic fixator in the line direction can be adjusted.

[0059] In actual construction process, the horizontal guide rod frame 1 is welded or tied with the tunnel second lining steel, and after fixed installation, the embedded channel can still be adjusted in the line direction within the range of about 150mm through the adjustable base. Specifically, the adjustable stroke of the horizontal guide rod in the horizontal sleeve is 150±10mm, which enables the embedded channel to realize flexible and accurate positioning installation. For example, during installation, if it is found that the position of the embedded channel deviates from the design requirement, the deviation can be corrected by adjusting the position of the horizontal guide rod frame 1, so as to ensure that the installation position of the embedded channel is accurate.

[0060] (III) Angle adjustment and fixation

[0061] The design of the hinge type movable clamping groove 5 enables the clamping groove to realize angle fine adjustment. When the concrete surface where the embedded channel is located has an arc, the traditional fixator may not be able to accurately align, while the hinge type movable clamping groove 5 can adapt to the arc of the concrete surface by rotating the hinge 52, so as to realize accurate positioning of the embedded channel. At the same time, the L-shaped reinforcing steel bar 53 can rotate freely, so that the fixator clamping groove is more tightly fitted with the embedded channel, further improving the stability of the embedded channel.

[0062] The double-shaft double-spring combined leaf type elastic fixer directly welds or binds the pre-embedded channel through the elastic fixer on the second lining steel bar net, so that the second lining trolley of the tunnel does not need to be opened, and will not be damaged; at the same time, the pre-embedded channel is fixed on the steel bar net in a relatively fast manner by welding or binding, and the flow operation does not occupy the construction time of the second lining trolley, improves the construction work efficiency and the accuracy of the installation position, greatly improves the engineering construction quality and shortens the construction period; for example, in the traditional pre-embedded channel installation method, the second lining trolley needs to be opened, which not only damages the trolley, but also the precision of the opening position and size is difficult to guarantee, which easily leads to inaccurate installation position of the pre-embedded channel. The double-shaft double-spring combined leaf type elastic fixer of the embodiment avoids these problems and improves the construction efficiency and quality;

[0063] The elastic fixer assembly is fixed on the pre-embedded channel in advance and is directly and stably fixed on the second lining steel bar net, so that the installation can be completed before the second lining trolley of the tunnel is in place, and there is enough space and time to check whether the model and installation position of the pre-embedded channel meet the technical requirements; in the actual construction process, the construction personnel can comprehensively check and adjust the pre-embedded channel before the trolley is in place to ensure that it meets the design requirements; if problems are found, they can be corrected in time to avoid the situation that it is difficult to adjust after the trolley is in place due to limited space;

[0064] Through the compression setting of the compression spring 4, the pre-embedded channel is always tightly attached to the trolley formwork, and will not cause the pre-embedded channel to be buried too deep or too shallow, and will not cause the tunnel second lining cement grouting to cause the channel to be inclined, tilted, and the spacing to not meet the design requirements; during the concrete pouring process, the elasticity of the spring 4 can make the surface of the pre-embedded channel tightly fit the surface of the second lining trolley, prevent the channel from being displaced or deformed due to the impact of the concrete, and ensure the stability of the pre-embedded channel;

[0065] Through the clamping setting and sealing rubber strip of the elastic fixer assembly, the pre-embedded channel is prevented from being directly spot-welded or fixed on the tunnel second lining trolley formwork through T-shaped bolts, and the galvanized anticorrosive layer of the pre-embedded channel is damaged by forcibly demolding, causing the pre-embedded channel to rust and corrode, affecting the service life of the channel; the double-shaft double-spring combined leaf type elastic fixer of the embodiment fixes the pre-embedded channel by clamping and binding, avoiding damage to the surface of the pre-embedded channel by direct spot welding or using T-shaped bolts, and effectively protecting the surface of the pre-embedded channel of the catenary;

[0066] Through welding or binding the pre-embedded channel directly through the elastic fixer on the secondary lining steel bar net, the operation is continuous, there is enough time and space for 100% self-checking and re-checking, and it is not easy to make mistakes; during the construction process, the construction personnel can perform self-checking after each installation link is completed to ensure that the installation quality meets the requirements; at the same time, due to enough time and space, re-checking can also be performed to further ensure the accuracy of installation.

[0067] The movable clamping groove of the dual-shaft dual-spring hinge-type elastic fixer can have automatic trimming and automatic fine-tuning functions, and is particularly suitable for installing straight channels at the lower ends of both sides; because the central axis in the traditional fixer cannot be aligned with the center of the arc of the concrete surface at this time, this clamping groove with fine-tuning function is needed, and the greater elasticity of the dual spring makes the pre-embedded channel tightly and closely adhere to the surface of the secondary lining trolley during concrete pouring; in actual application, when the concrete surface where the pre-embedded channel is located has an arc, the hinge-type movable clamping groove 5 can automatically adapt to the arc of the concrete surface through the rotation of the hinge 52, realizing accurate positioning of the pre-embedded channel; at the same time, the elastic action of the dual spring 4 can ensure that the pre-embedded channel is closely adhered to the surface of the secondary lining trolley, avoiding the problem of inaccurate installation of the pre-embedded channel due to the arc of the concrete surface;

[0068] The freely rotatable L-shaped reinforcing steel bar makes the fixer clamping groove adhere more closely to the pre-embedded channel. During installation, the L-shaped reinforcing steel bar 53 can be freely rotated according to the angle and position of the pre-embedded channel, adjusting the connection mode with the pre-embedded channel anchor rod, making the connection between the fixer clamping groove and the pre-embedded channel more firm and closely adhered. This can improve the stability of the pre-embedded channel and prevent it from shifting or deforming during concrete pouring.

[0069] The dual-shaft dual-spring hinge-type elastic fixer of the present embodiment, through its unique structural design and working principle, optimizes the construction process of the pre-embedded channel, and systematically solves a series of difficulties and problems faced by the traditional construction method; has functions such as multi-directional and multi-functional adjustment, automatic trimming, and automatic fine-tuning, which can ensure the accurate position and surface adhesion of the pre-embedded channel during concrete pouring, improve construction efficiency and quality, and reduce construction cost. The dual-shaft dual-spring hinge-type elastic fixer provides a more reliable and efficient solution for the pre-embedded construction of the contact net channel in the rail transit field.

[0070] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like 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 embodiments of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0071] The above application of specific examples to the present application is described, which is only used to help understand the present application, and does not limit the present application. For the person skilled in the art, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A dual-axis, dual-spring, hinge-type elastic retainer, characterized in that, include: The base (2) is provided with two vertical sleeves and two horizontal sleeves; The horizontal guide rod frame (1) includes two horizontal guide rods, each of which is slidably set in the horizontal sleeve of the base (2); Two vertical guide rods (3), each vertical guide rod (3) is slidably disposed in the vertical sleeve of the base (2); The hinge-type movable slot (5) includes two U-shaped slot halves (51), a hinge (52) and an L-shaped reinforcing bar (53). The two U-shaped slot halves (51) are connected by the hinge (52) to form a U-shaped slot. The L-shaped reinforcing bar (53) is fixedly connected to the end of the pivot (523) of the hinge (52). A vertical guide rod (3) is fixedly connected to the top of each U-shaped slot halves (51). Two springs (4), each spring (4) is fitted on a vertical guide rod (3) and located between the base (2) and the hinged movable slot (5).

2. The biaxial double-spring hinged elastic retainer as described in claim 1, characterized in that, The base (2) includes a first vertical sleeve (21), a second vertical sleeve (22), a first horizontal sleeve (23), and a second horizontal sleeve (24). The second vertical sleeve (22), the first horizontal sleeve (23), and the second horizontal sleeve (24) are respectively fixedly connected to the first vertical sleeve (21).

3. The biaxial double-spring hinged elastic retainer as described in claim 1, characterized in that, The horizontal guide rod frame (1) is formed by a first horizontal guide rod (11) and a U-shaped frame body. The U-shaped frame body includes a second horizontal guide rod (12) and a connecting rod (13). The two connecting rods (13) are respectively set at both ends of the second horizontal guide rod (12), and the two ends of the first horizontal guide rod (11) are respectively fixedly connected to the two connecting rods (13).

4. The biaxial double-spring hinged elastic retainer as described in claim 1, characterized in that, One end of the vertical guide rod (3) is fixedly connected to the top of the U-shaped slot half (51), and the other end is provided with a pin hole. After the vertical guide rod (3) passes through the vertical sleeve, a cotter pin is installed in the pin hole.

5. The biaxial double-spring hinged elastic retainer as described in claim 4, characterized in that, A gasket (7) is provided between the vertical sleeve and the cotter pin.

6. The biaxial double-spring hinged elastic retainer as described in claim 1, characterized in that, The hinge (52) consists of a male hinge piece (521), a female hinge piece (522), and a pivot (523). The male hinge piece (521) is fixedly connected to the pivot (523), and the pivot (523) is rotatably connected to the female hinge piece (522).

7. The biaxial double-spring hinged elastic retainer as described in claim 6, characterized in that, The hinge mother piece (522) has rotating holes at both ends. The rotating shaft (523) consists of a stop block and a rotating shaft body. The outer diameter of the stop block is larger than the inner diameter of the rotating hole. After the rotating shaft body passes through the rotating holes at both ends of the hinge mother piece (522), a stop plate (54) is installed at the end of the rotating shaft body. The middle part of the rotating shaft body is fixedly connected to the hinge male piece (521).

8. The biaxial double-spring hinged elastic retainer as described in claim 7, characterized in that, A pin hole is provided at the end of the rotating shaft away from the stop block. After the stop plate (54) is installed on the rotating shaft, a cotter pin is installed in the pin hole.

9. The biaxial double-spring hinged elastic retainer as described in claim 1, characterized in that, The compression stroke of the spring (4) is not less than 80 mm.

10. The biaxial double-spring hinged elastic retainer as described in claim 1, characterized in that, The adjustable stroke of the horizontal guide rod within the horizontal sleeve is: .

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