Macromolecule sliding plate mounting structure for cable saddle pushing

Abstract

The utility model discloses a macromolecule sliding plate installation structure for cable saddle pushing. The macromolecule sliding plate installation structure comprises macromolecule sliding plates and a base plate for arranging the macromolecule sliding plates. The base plate is formed on a pushing base of a cable saddle, and a plurality of sliding plate installation grooves which are of a long-strip-shaped structure in the pushing depth direction are formed in the surface of the top side of the base plate in an inwards-concave structure. The macromolecule sliding plate is of a long-strip-shaped structure matched with the outline structure of the corresponding sliding plate installation groove in the base plate. The macromolecule sliding plates are installed in the corresponding sliding plate installation grooves in the base plate, the macromolecule sliding plates are close to the ends of the pre-deviation cable saddle, and the macromolecule sliding plates are installed and formed in the corresponding sliding plate installation grooves through countersunk head structures which are flush with the surface of the top side of the base plate at the highest degree. According to the utility model, the pushing advancing front end of the macromolecular sliding plate can form smooth transition stress in the pushing advancing process, so that the advancing front end of the macromolecular sliding plate is effectively prevented from being deformed and damaged by pushing and extruding, and smooth and reliable pushing construction operation can be guaranteed.

Description

Technical Field

[0001] The utility model relates to a pushing sliding friction pair for the pushing construction of a suspension bridge cable saddle, in particular to a polymer slide plate, that is, a tetrafluoro plate installation structure, for pushing the suspension bridge cable saddle. Background Art

[0002] During the construction of the suspension bridge structure, in order to ensure that the main tower (or pier, the same below) can always be in a safe stress state during the hoisting process of the stiffening beam, etc., it is necessary to pre-deflect the saddle supporting the main cable at the top of the main tower in the early stage, so that it can be gradually pushed to the designed position as the bridge construction progresses, so as to achieve a balanced force on the main cables on both sides of the main tower. In order to ensure the smooth pushing construction of the saddle on the base of the top of the main tower and reduce the friction resistance of the push, it is necessary to set a friction-reducing sliding structure between the bottom of the saddle and the top of the base, that is, a push sliding friction pair.

[0003] For a long time, the push sliding friction pair used in the saddle push construction operation is composed of a stainless steel plate fixed to the bottom surface of the upper bearing plate at the bottom of the saddle and a polymer slide plate (usually a polytetrafluoroethylene slide plate) fixed to the top surface of the lower bearing plate at the top of the base. During the push construction process, the bottom surface of the stainless steel plate and the top surface of the polytetrafluoroethylene slide plate form a sliding fit relationship on the top and bottom sides, with an extremely low friction coefficient.

[0004] The existing PTFE plate installation structure of the push sliding friction pair is to directly hot-press and paste the polytetrafluoroethylene slide plate on the top side surface of the lower bearing plate, and the entire polytetrafluoroethylene slide plate protrudes from the top side surface of the lower bearing plate; or, a concave installation groove is provided on the top side surface of the lower bearing plate, and the lower part of the polytetrafluoroethylene slide plate is pasted and fixed in the corresponding installation groove on the top side surface of the lower bearing plate, and the upper part of the polytetrafluoroethylene slide plate emerges from the corresponding installation groove and protrudes from the top side surface of the lower bearing plate. The specific structural form is shown in the Chinese patent document entitled "A Suspension Bridge Main Cable Saddle Push Friction Structure" (publication number CN 205893915U, publication date January 18, 2017), "A Suspension Bridge Cable Saddle Push Friction Reduction Slide Plate Structure" (publication number CN220394314U, publication date January 26, 2024) and other technologies. In these PTFE plate installation technologies, the PTFE slide plate used to permanently support the saddle (i.e., the PTFE slide plate that still exists at the bottom of the saddle after the saddle is pushed into place) is adjacent to the end of the pre-biased saddle and is always protruded on the top side surface of the lower support plate before the jacking is advanced. Before the jacking process, the combined weight of the saddle's own weight and the main cable load it bears is directly transmitted to the temporary polytetrafluoroethylene slide plate below (i.e., the polytetrafluoroethylene slide plate exposed at the bottom of the saddle after the saddle is jacked into place and can be cut and removed after the construction is completed), and the polytetrafluoroethylene slide plate has a certain degree of flexible deformation, which results in a certain transition height difference between the bottom surface of the front end of the saddle before the jacking process and the top surface of the end of the permanent polytetrafluoroethylene slide plate adjacent to the pre-biased saddle. During the jacking process, the transition height difference causes the end of the polytetrafluoroethylene slide plate adjacent to the pre-biased saddle to form a certain misaligned abutment with the front end of the saddle during the jacking process, and the front end of the saddle during the jacking process cannot effectively and smoothly transition to the permanent polytetrafluoroethylene slide plate. As a result, under the action of the jacking force, the saddle will be pushed and squeezed to deform the end of the polytetrafluoroethylene slide plate adjacent to the pre-biased saddle, which can easily cause the compressive stress at the end of the polytetrafluoroethylene slide plate adjacent to the pre-biased saddle to increase, and it is easy to cause planing-type damage.

[0005] At present, there are no effective technical measures to solve this technical status quo, and it needs to be improved and perfected. Utility Model Content

[0006] The technical purpose of the utility model is to provide a polymer slide plate installation structure for cable saddle jacking, which can effectively prevent the end of the polymer slide plate from being squeezed, deformed and damaged by jacking during the jacking of the cable saddle, in view of the particularity of the jacking sliding friction pair used in the jacking construction of the above-mentioned suspension bridge cable saddle and the shortcomings of the existing technology.

[0007] The technical purpose of the utility model is achieved by the following technical solution 1: a polymer slide plate installation structure for cable saddle top pushing, comprising a polymer slide plate and a substrate on which the polymer slide plate is arranged;

[0008] The base plate is formed on the push base of the saddle;

[0009] The top side surface of the base plate is formed with a plurality of slide plate installation grooves in a long strip structure along the longitudinal direction of the pusher in an inward concave structure;

[0010] The polymer slide plate is a long strip structure matching the contour structure of the corresponding slide plate installation groove on the substrate;

[0011] Each polymer slide plate is installed in a corresponding slide plate installation groove on the substrate, and the polymer slide plate is adjacent to the end of the pre-biased saddle and is installed in the corresponding slide plate installation groove with a countersunk structure that is flush with the top side surface of the substrate.

[0012] The above technical measures are aimed at the special structure of the pushing sliding friction pair of the upper stainless steel plate and the lower polymer skateboard formed in the pushing construction of the cable saddle of the above-mentioned suspension bridge. The front end of the pushing and advancing of the strip-shaped polymer skateboard fixed on the lower substrate (i.e., the end adjacent to the pre-biased cable saddle) is installed and formed on the top side of the substrate with a countersunk structure. In this way, the height difference between the bottom surface of the front end of the pushing and advancing of the saddle and the top surface of the end of the polymer skateboard adjacent to the pre-biased cable saddle of the next pushing stroke can be directly eliminated, so that the end of the polymer skateboard adjacent to the pre-biased cable saddle avoids the front end of the pushing and advancing of the saddle. The cable saddle in the pushing and advancing process will not produce direct pushing and extrusion on the corresponding end of the polymer skateboard of the next stroke, thereby effectively avoiding the deformation and damage of the end of the polymer skateboard due to pushing and extrusion, which is conducive to ensuring smooth and reliable pushing construction operations.

[0013] In addition, in the above-mentioned technical measures, the strip-shaped polymer slide plates arranged along the longitudinal direction of the jacking effectively reduce the contact area between the front end of the saddle jacking advance and the corresponding edge of the polymer slide plate during the jacking advance. Compared with the technology of publication number CN 205893915 U, it is more conducive to improving the smoothness of the jacking advance, which is especially evident in the continuous long strip molding structure of the polymer slide plate along the longitudinal direction of the jacking depth (i.e., a whole strip, multiple strips arranged non-interruptedly).

[0014] As one of the preferred solutions, the slide plate mounting groove on the base plate is composed of a mounting groove main body and a mounting groove countersunk head at one end, and the mounting groove countersunk head is formed at the end of the slide plate mounting groove adjacent to the pre-biased saddle in a sunken structure with a curved surface transition;

[0015] The depth of the main body of the slide plate installation groove is less than the thickness of the polymer slide plate;

[0016] The maximum depth of the countersunk head of the slide plate mounting groove is greater than the thickness of the polymer slide plate;

[0017] Correspondingly, the polymer slide plate installed in the corresponding slide plate installation groove has an integrally formed slide plate main body and a slide plate countersunk head;

[0018] The lower part of the slide body is installed in the installation slot body, and the upper part of the slide body emerges from the installation slot body;

[0019] The countersunk head portion of the skateboard is installed in the countersunk head portion of the mounting groove, and the top side surface of the countersunk head portion of the skateboard smoothly transitions with the top side surface of the skateboard main body portion in a curved structure. The lowest position of the top side surface of the countersunk head portion of the skateboard is at the end portion and is lower than the top side surface of the substrate.

[0020] Under the premise of meeting the technical requirements of push-sliding friction cooperation, the above-mentioned technical measures enable the polymer slide plate to be close to the end of the pre-biased saddle, and a countersunk mounting structure with a smooth curved transition is formed in the mounting groove on the top side of the substrate, so that the saddle in the push-moving process can smoothly transition to the polymer slide plate of the next stroke, greatly reducing the push-in extrusion at the transition point of the polymer slide plate of the next stroke, which is conducive to reliably improving the damage phenomenon of the polymer slide plate caused by push-in extrusion and deformation.

[0021] Furthermore, a threaded hole is provided in the countersunk head of the mounting groove on the substrate;

[0022] Correspondingly, the countersunk head portion of the slide plate is installed in the countersunk head portion of the installation groove through a fixing screw, and the fixing screw installed in place is sunken in the countersunk head portion of the installation groove.

[0023] The above-mentioned technical measures can make the countersunk head of the polymer skateboard firmly sunk in the installation groove, effectively enhancing the reliability of the installation and fixation of the countersunk head of the polymer skateboard in a narrow space, thereby effectively bearing the traction force of the cable saddle pushing friction, and preventing the countersunk head of the polymer skateboard from peeling off and falling off the installation groove under the friction traction of the cable saddle pushing.

[0024] Furthermore, the polymer slide plate includes but is not limited to a polytetrafluoroethylene slide plate, a modified polytetrafluoroethylene slide plate, an ultra-high performance polytetrafluoroethylene slide plate and a modified ultra-high molecular weight polyethylene slide plate; the thickness of the polymer slide plate is 6 to 8 mm;

[0025] The depth of the main body of the installation groove on the substrate is 3 to 5 mm.

[0026] The above-mentioned technical measures are aimed at the polymer slide plates for jacking of common structural types. On the premise of meeting the technical requirements of jacking sliding friction matching, they are conducive to enhancing the firmness of the polymer slide plates installed in the mounting groove on the top of the base plate, so as to ensure that they can stably and reliably carry the saddle jacking and reduce the breakage rate caused by jacking squeezing.

[0027] Furthermore, the top side surface of the substrate is divided into a pre-biased area, a push rear baffle installation area, a bearing area and a push front baffle installation area in sequence along the push depth direction;

[0028] Under the partition of the push rear baffle installation area, there are a plurality of slide plate installation grooves between the pre-biased area and the bearing area, which correspond to each other in the longitudinal direction and are independent of each other. The slide plate installation groove 1 in the pre-biased area under the partition of the push rear baffle installation area is used to install a temporary polymer slide plate, and the slide plate installation groove 2 in the bearing area under the partition of the push rear baffle installation area is used to install a permanent polymer slide plate;

[0029] The countersunk head of the mounting groove is formed at the end of the second mounting groove of the slide plate in the bearing area, and is used for countersunk mounting of the end of the permanent polymer slide plate.

[0030] The base plate is a lower support plate installed on the top of the grille.

[0031] The above technical measures are designed according to the functional arrangement structure of the current lower bearing plate in the jacking construction operation, making the countersunk head installation structure of the polymer skateboard more targeted, avoiding unnecessary processing and installation, and reducing the processing workload of the countersunk head installation as much as possible while meeting the requirements of the countersunk head installation technology of the polymer skateboard.

[0032] The technical purpose of the utility model is achieved by the following technical solution 2: a polymer slide plate installation structure for cable saddle top pushing, comprising a polymer slide plate and a substrate on which the polymer slide plate is arranged;

[0033] The base plate is formed at the bottom of the saddle;

[0034] The bottom surface of the base plate is formed with a plurality of slide plate installation grooves in a concave structure and along the top pushing direction, respectively, and in a long strip structure;

[0035] The polymer slide plate is a long strip structure matching the contour structure of the corresponding slide plate installation groove on the substrate;

[0036] Each polymer slide is installed in a corresponding slide installation groove on the substrate, and the top push-up front end of the polymer slide is installed and formed in the corresponding slide installation groove with a countersunk structure that is at the lowest level with the bottom surface of the substrate.

[0037] The above-mentioned technical measures are aimed at the special structure of the pushing sliding friction pair of the upper polymer skateboard and the lower stainless steel plate formed in the jacking construction operation of the above-mentioned suspension bridge saddle. The front end of the jacking advancement of the strip-shaped polymer skateboard fixed on the upper substrate is installed and formed on the bottom side of the substrate with a countersunk structure. In this way, the front end of the jacking advancement of the polymer skateboard can form a smooth transition force during the jacking advancement, effectively avoiding the front end of the polymer skateboard being squeezed, deformed and damaged by the jacking, which is conducive to ensuring the smooth and reliable implementation of the jacking construction operation.

[0038] In addition, in the above technical measures, the strip-shaped polymer slide plates arranged along the longitudinal direction of the jacking effectively reduce the contact area of ​​the edge of the polymer slide plates on the stainless steel plate during the jacking advance, which is beneficial to improving the smoothness of the jacking advance.

[0039] As one of the preferred solutions, the slide plate installation groove on the substrate is composed of a main body of the installation groove and a countersunk head of the installation groove at one end, and the countersunk head of the installation groove is formed at the front end of the top push of the slide plate installation groove with a curved surface transition sinking structure;

[0040] The depth of the main body of the slide plate installation groove is less than the thickness of the polymer slide plate;

[0041] The maximum depth of the countersunk head of the slide plate mounting groove is greater than the thickness of the polymer slide plate;

[0042] Correspondingly, the polymer slide plate installed in the corresponding slide plate installation groove has an integrally formed slide plate main body and a slide plate countersunk head;

[0043] The upper part of the slide body is installed in the installation slot body, and the lower part of the slide body emerges from the installation slot body;

[0044] The countersunk head portion of the skateboard is installed in the countersunk head portion of the installation groove, and the bottom surface of the countersunk head portion of the skateboard smoothly transitions with the bottom surface of the skateboard main body portion in a curved structure. The highest position of the bottom surface of the countersunk head portion of the skateboard is at the end and is higher than the bottom surface of the substrate.

[0045] Under the premise of meeting the technical requirements of top-pushing sliding friction cooperation, the above-mentioned technical measures enable the top-pushing front end of the polymer skateboard to be formed in the bottom mounting groove of the saddle with a countersunk mounting structure with a smooth curved transition, so that the top-pushing front end of the polymer skateboard can move forward smoothly during the top-pushing process, greatly reducing the top-pushing extrusion on the top-pushing front end of the polymer skateboard during the top-pushing process, which is conducive to reliably improving the damage phenomenon of the polymer skateboard caused by top-pushing extrusion and deformation.

[0046] Furthermore, a threaded hole is provided in the countersunk head of the mounting groove on the substrate;

[0047] Correspondingly, the countersunk head portion of the slide plate is installed in the countersunk head portion of the installation groove through a fixing screw, and the fixing screw installed in place is sunken in the countersunk head portion of the installation groove.

[0048] The above-mentioned technical measures can make the countersunk head of the polymer skateboard firmly sunk in the installation groove, effectively enhancing the reliability of the installation and fixation of the countersunk head of the polymer skateboard in a narrow space, thereby effectively bearing the traction force of the cable saddle pushing friction, and preventing the countersunk head of the polymer skateboard from peeling off and falling off the installation groove under the friction traction of the cable saddle pushing.

[0049] Furthermore, the polymer slide plate includes but is not limited to a polytetrafluoroethylene slide plate, a modified polytetrafluoroethylene slide plate, an ultra-high performance polytetrafluoroethylene slide plate and a modified ultra-high molecular weight polyethylene slide plate; the thickness of the polymer slide plate is 6 to 8 mm;

[0050] The depth of the main body of the installation groove on the substrate is 3 to 5 mm.

[0051] The above-mentioned technical measures are aimed at the polymer slide plates for jacking of common structural types. On the premise of meeting the technical requirements of jacking sliding friction matching, they are conducive to enhancing the firmness of the polymer slide plates installed in the mounting groove at the bottom of the saddle, so as to ensure that they can stably and reliably bear the jacking of the saddle and reduce the breakage rate caused by jacking and squeezing.

[0052] The beneficial technical effect of the utility model is: the above-mentioned technical measures are aimed at the special structure of the pushing sliding friction pair of the stainless steel plate and the polymer skateboard formed in the jacking construction operation of the above-mentioned suspension bridge saddle, and the jacking advancement front end of the strip-shaped polymer skateboard fixed on the substrate is installed and formed on the substrate with a countersunk structure, so that the jacking advancement front end of the polymer skateboard can form a smooth transition force during the jacking advancement, effectively avoiding the front end of the polymer skateboard being squeezed, deformed and damaged by jacking, which is conducive to ensuring that the jacking construction operation is carried out smoothly and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a structural schematic diagram of the utility model.

[0054] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at AA in FIG.

[0055] Figure 3 for Figure 2 Schematic diagram of the lower support plate structure.

[0056] The meaning of the codes in the figure are as follows: 1—lower bearing plate; 11—pre-biased area; 12—bearing area; 13—pushing rear baffle installation area; 14—pushing front baffle installation area; 15—slide plate installation groove; 151—installation groove body; 152—installation groove countersunk head; 153—threaded hole; 2—permanent polytetrafluoroethylene slide plate; 21—slide plate body; 22—slide plate countersunk head; 3—temporary polytetrafluoroethylene slide plate; 4—setting screw. DETAILED DESCRIPTION

[0057] The utility model relates to a push sliding friction pair for the push construction of suspension bridge cable saddles, specifically a polymer slide plate (including but not limited to polytetrafluoroethylene slide plates - code PTFE, modified polytetrafluoroethylene slide plates - code M-PTFE, ultra-high performance polytetrafluoroethylene slide plates - code UHPF, modified ultra-high molecular weight polyethylene slide plates - code M-UHMWPE) installation structure for the push construction of suspension bridge cable saddles. The main technical solution of the utility model is specifically described in combination with multiple embodiments. Among them, embodiment 1 is combined with the accompanying drawings of the specification - that is, Figure 1 , Figure 2 and Figure 3 The technical solution of the present utility model is clearly and in detail explained; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of embodiment 1.

[0058] It should be noted that the drawings of the present invention are schematic, and unnecessary details have been simplified to clarify the technical purpose of the present invention, so as to avoid blurring the technical solution of the present invention in the prior art. In addition, the expressions "approximately" and "substantially" in the following text regarding quantity or matching relationship mean that reasonable assembly errors and processing errors in the industry are allowed to exist, and do not literally express absolute quantity or matching relationship.

[0059] Example 1

[0060] See also Figure 1 , Figure 2 and Figure 3 As shown, the utility model is a polymer slide-polytetrafluoroethylene slide installation structure for jacking of suspension bridge saddles, which includes a polytetrafluoroethylene slide and a substrate for arranging the polytetrafluoroethylene slide, and the substrate is a lower support plate 1 installed on the top of the grid on the main tower.

[0061] According to the functional arrangement structure of the current lower bearing plate in the jacking construction operation, the top side surface of the lower bearing plate 1 is divided into a pre-biased area 11, a jacking rear baffle installation area 13, a bearing area 12 and a jacking front baffle installation area 14 in sequence along the jacking depth direction from the left to the right. The pre-biased area 11 is used to place the cable saddle in the initial position before the jacking advances, and can be cut and removed after the cable saddle is jacked into place. The bearing area 12 is used to place the cable saddle that has been jacked into place, and edge limiting structures are formed on both sides of the wide width of the bearing area 12. The jacking rear baffle installation area 13 is used as a connecting baffle to limit the cable saddle that has been jacked into place from the tail end of the jacking depth. The jacking front baffle installation area 14 is used as a connecting baffle to limit the cable saddle that has been jacked into place from the front end of the jacking depth.

[0062] On the top side surface of the above-mentioned lower support plate 1, a plurality of long strip-shaped skateboard mounting grooves are formed in an inward concave structure. The length direction of each skateboard mounting groove is formed along the top push depth direction of the top side of the lower support plate 1. Each skateboard mounting groove is arranged at intervals in the width direction of the lower support plate 1. Usually, the length of the skateboard mounting groove extends from the outer end of the pre-biased area 11 (non-edge area) to the outer end of the load-bearing area 12 (non-edge area), the depth of the skateboard mounting groove is about 4mm, the width of the skateboard mounting groove is about 150mm, and the arrangement spacing between two adjacent skateboard mounting grooves is about 50mm.

[0063] However, based on the functional area division structure of the top side surface of the lower bearing plate 1, the push rear baffle installation area 13 forms a barrier to the continuity of the slide plate installation grooves in the region in the length direction. That is to say, under the separation of the push rear baffle installation area 13, there are multiple slide plate installation grooves that correspond to each other in the longitudinal direction but are independent of each other between the pre-biased area 11 and the bearing area 12 in the push depth direction, while the undivided slide plate installation grooves outside the push rear baffle installation area 13 maintain the through continuity in the length direction. Under the separation of the pushing rear baffle installation area 13, the independent slide plate installation groove in the pre-biased area 11 is used to install a temporary polytetrafluoroethylene slide plate 3; under the separation of the pushing rear baffle installation area 13, the independent slide plate installation groove in the load-bearing area 12 is used to install a permanent polytetrafluoroethylene slide plate 2; as for the unseparated slide plate installation grooves outside the pushing rear baffle installation area 13, the polytetrafluoroethylene slide plates used for installation have the dual functions of the permanent polytetrafluoroethylene slide plate 2 and the temporary polytetrafluoroethylene slide plate 3 according to the supporting function of the saddle at their positions, that is, the structural segment in the load-bearing area 12 serves as a permanent polytetrafluoroethylene slide plate 2, and the structural segment in the pre-biased area 11 serves as a temporary polytetrafluoroethylene slide plate 3, which can be cut and removed after the saddle is installed in place.

[0064] In the above structure, since the temporary polytetrafluoroethylene slide plate 3 in the pre-biased area 11 is used to directly support the pre-biased cable saddle that has been hoisted into place, there is no problem of extrusion caused by pushing displacement at the end face; similarly, the polytetrafluoroethylene slide plates installed in the undivided slide plate installation grooves outside the rear baffle installation area 13 do not have the problem of extrusion caused by pushing displacement at the end face. Therefore, these polytetrafluoroethylene slide plates that do not have the problem of pushing displacement at the end face can be installed and formed on the lower bearing plate according to the conventional installation structure, while the independent slide plate installation grooves in the load-bearing area 12 should bear the extrusion of the cable saddle on the end face during the pushing displacement of the cable saddle, and the specific installation structure set by the utility model needs to be used to make a smooth transition to reduce the damage caused by pushing and extrusion. Therefore, in the following description of this embodiment, unless otherwise specified, it refers to the installation structure of the independent slide plate installation grooves in the load-bearing area 12 to the polytetrafluoroethylene slide plate.

[0065] Each slide plate installation groove 15 in the bearing area 12 is composed of a long strip-shaped installation groove main body 151 and an installation groove countersunk head 152 at the end adjacent to the push rear baffle installation area 13. The installation groove countersunk head 152 is a curved surface with a rounded corner R that smoothly transitions to a sinking structure and is formed at the end of the slide plate installation groove 15 adjacent to the push rear baffle installation area 13. The depth of the installation groove main body 151 is about 4 mm, and the maximum depth of the installation groove countersunk head 152 is about 2.5 times the depth of the installation groove main body 151. In order to reliably fix the polytetrafluoroethylene slide plate installed in the slide plate installation groove 15, a threaded hole 153 is opened obliquely (compared to the top side surface of the lower bearing plate 1) at the arc surface of the aforementioned installation groove countersunk head 152.

[0066] The permanent polytetrafluoroethylene slide plate 2 used for being assembled in each slide plate installation groove 15 in the above-mentioned bearing area 12 is a long strip structure matching the long strip contour structure of the corresponding slide plate installation groove 15. The thickness of the permanent polytetrafluoroethylene slide plate 2 is about 7mm, which is greater than the depth of the corresponding slide plate installation groove 15.

[0067] The lower part, especially the bottom surface, of the permanent polytetrafluoroethylene skateboard 2 is installed in the corresponding skateboard installation groove by bonding along the bottom surface of the skateboard installation groove 15. In this way, the permanent polytetrafluoroethylene skateboard 2 forms an integrally formed skateboard main body 21 and a skateboard countersunk head 22 along the length direction of the skateboard installation groove 15. The upper part of the skateboard main body 21 protrudes from the installation groove main body 151, and the protruding height is about 3mm. The skateboard countersunk head 22 is sunken in the installation groove countersunk head 152, that is, the lowest position of the top surface of the skateboard countersunk head 22 is lower than the top side surface of the lower bearing plate 1, and the top side surface of the skateboard countersunk head 22 and the top side surface of the skateboard main body 21 are smoothly transitioned with the curved surface structure in cooperation with the above-mentioned skateboard installation groove 15 structure. The skateboard countersunk head 22 is anchored in the installation groove countersunk head 152 by the set screw 4 installed in the threaded hole 153, and the set screw 4 installed in place is also sunk in the installation groove countersunk head 152.

[0068] Through the above structure, each permanent polytetrafluoroethylene slide plate 2 in the bearing area 12 is close to the end of the pre-biased saddle, and is sunk into the top surface of the lower support plate 1 with a countersunk structure with a gradually curved surface, and cannot form a direct raised step, so that the saddle in the jacking advance can smoothly transition on the permanent polytetrafluoroethylene slide plate 2, avoiding jacking and squeezing of the end of the permanent polytetrafluoroethylene slide plate 2 during the jacking displacement.

[0069] Example 2

[0070] The utility model is a polymer slide-polytetrafluoroethylene slide installation structure for jacking of suspension bridge saddles, which comprises a polytetrafluoroethylene slide and a base plate for arranging the polytetrafluoroethylene slides, wherein the base plate is a lower bearing plate installed on the top of a grid on a main tower.

[0071] On the top side surface of the lower support plate, a plurality of long strip-shaped slide plate installation grooves are formed in an inward concave structure. The length direction of each slide plate installation groove is formed along the top push depth direction of the top side of the lower support plate. Each slide plate installation groove is arranged at intervals in the width direction of the lower support plate. Usually, the depth of the slide plate installation groove is about 5mm, the width of the slide plate installation groove is about 155mm, and the arrangement interval between two adjacent slide plate installation grooves is about 55mm.

[0072] Each slide plate installation groove on the top side surface of the above-mentioned lower bearing plate is composed of a long strip-shaped installation groove main body and an installation groove countersunk head located at the end adjacent to the pre-biased saddle. The installation groove countersunk head is formed at the end of the slide plate installation groove adjacent to the pre-biased saddle with a curved surface with a rounded corner R and a smooth transition sinking structure. The depth of the installation groove main body is about 5mm, and the maximum depth of the installation groove countersunk head is about 3 times the depth of the installation groove main body. In order to reliably fix the polytetrafluoroethylene slide plate installed in the slide plate installation groove, a threaded hole is opened obliquely (compared to the top side surface of the lower bearing plate) at the arc surface of the aforementioned installation groove countersunk head.

[0073] Each polytetrafluoroethylene slide plate used for being assembled in the slide plate installation groove is a long strip structure matching the long strip outline structure of the corresponding slide plate installation groove. The thickness of the polytetrafluoroethylene slide plate is about 8mm, which is greater than the depth of the corresponding slide plate installation groove.

[0074] The lower part of the polytetrafluoroethylene skateboard, especially the bottom surface, is installed in the corresponding skateboard mounting groove by bonding along the bottom surface of the skateboard mounting groove. In this way, the polytetrafluoroethylene plate forms an integrally formed skateboard main body and skateboard countersunk head along the length direction of the skateboard mounting groove. The upper part of the skateboard main body protrudes from the mounting groove main body, and the protruding height is about 3mm. The skateboard countersunk head is sunk into the mounting groove countersunk head, that is, the lowest position of the top surface of the skateboard countersunk head is lower than the top side surface of the lower supporting plate, and the top side surface of the skateboard countersunk head and the top side surface of the skateboard main body are smoothly transitioned with the curved surface structure in cooperation with the above-mentioned skateboard mounting groove structure. The skateboard countersunk head is anchored in the mounting groove countersunk head by a set screw installed in the threaded hole, and the set screw installed in place is also sunk into the mounting groove countersunk head.

[0075] Through the above structure, each polytetrafluoroethylene slide plate is close to the end of the pre-biased saddle, and is sunk into the top side surface of the lower support plate with a countersunk structure with a gradually curved surface, and no direct raised step can be formed, so that the saddle being pushed forward can smoothly transition on the polytetrafluoroethylene slide plate, avoiding the saddle being pushed forward from pushing and squeezing the end of the polytetrafluoroethylene slide plate.

[0076] Example 3

[0077] The utility model is a polymer slide-polytetrafluoroethylene slide installation structure for jacking of suspension bridge saddles, which comprises a polytetrafluoroethylene slide and a base plate for arranging the polytetrafluoroethylene slides, wherein the base plate is a lower bearing plate installed on the top of a grid on a main tower.

[0078] On the top side surface of the lower support plate, a plurality of long strip-shaped slide plate installation grooves are formed in an inward concave structure. These slide plate installation grooves are arranged in a rectangular array on the top side surface of the lower support plate, that is, the length direction of each slide plate installation groove is formed along the top push depth direction of the top side of the lower support plate, and a plurality of slide plate installation grooves arranged at intervals are formed in the same row in the top push depth direction, and the slide plate installation grooves of each row are also arranged at intervals in the width direction of the lower support plate. Usually, the depth of the slide plate installation groove is about 3mm, the width of the slide plate installation groove is about 145mm, and the arrangement interval between two adjacent slide plate installation grooves is about 45mm.

[0079] Each slide plate installation groove on the top side surface of the above-mentioned lower bearing plate is composed of a long strip-shaped installation groove main body and an installation groove countersunk head located at the end adjacent to the pre-biased saddle (the aforementioned expression adjacent to the pre-biased saddle is relative to the end away from the pre-biased saddle). The installation groove countersunk head is formed at the end of the slide plate installation groove adjacent to the pre-biased saddle with a curved surface with a rounded corner R and a smooth transition sinking structure. The depth of the installation groove main body is about 3mm, and the maximum depth of the installation groove countersunk head is about 2 times the depth of the installation groove main body. In order to reliably fix the polytetrafluoroethylene slide plate installed in the slide plate installation groove, a threaded hole is opened obliquely (compared to the top side surface of the lower bearing plate) at the arc surface of the aforementioned installation groove countersunk head.

[0080] Each polytetrafluoroethylene slide plate used for being assembled in the slide plate installation groove is a long strip structure matching the long strip outline structure of the corresponding slide plate installation groove. The thickness of the polytetrafluoroethylene slide plate is about 6 mm, which is greater than the depth of the corresponding slide plate installation groove.

[0081] The lower part of the polytetrafluoroethylene skateboard, especially the bottom surface, is installed in the corresponding skateboard mounting groove by bonding along the bottom surface of the skateboard mounting groove, so that the polytetrafluoroethylene skateboard forms an integral skateboard main body and skateboard countersunk head along the length direction of the skateboard mounting groove. The upper part of the skateboard main body protrudes from the mounting groove main body, and the protruding height is about 3mm. The skateboard countersunk head is sunk in the mounting groove countersunk head, that is, the lowest position of the top surface of the skateboard countersunk head is lower than the top side surface of the lower supporting plate, and the top side surface of the skateboard countersunk head and the top side surface of the skateboard main body are smoothly transitioned with the curved surface structure in cooperation with the above-mentioned skateboard mounting groove structure. The skateboard countersunk head is anchored in the mounting groove countersunk head by a set screw installed in the threaded hole, and the set screw installed in place is also sunk in the mounting groove countersunk head.

[0082] Through the above structure, each polytetrafluoroethylene slide plate is close to the end of the pre-biased saddle, and is sunk into the top side surface of the lower support plate with a countersunk structure with a gradually curved surface, and no direct raised step can be formed, so that the saddle being pushed forward can smoothly transition on the polytetrafluoroethylene slide plate, avoiding the saddle being pushed forward from pushing and squeezing the end of the polytetrafluoroethylene slide plate.

[0083] Example 4

[0084] The utility model discloses a polymer slide plate-polytetrafluoroethylene slide plate installation structure for pushing the cable saddle of a suspension bridge, which comprises a polytetrafluoroethylene slide plate and a base plate for arranging the polytetrafluoroethylene slide plates, wherein the base plate is an upper bearing plate installed at the bottom of the cable saddle.

[0085] On the bottom surface of the upper deck, a plurality of long strip-shaped slide plate installation grooves are formed in an inward concave structure. Each slide plate installation groove is formed along the top push depth direction of the bottom side of the upper deck, and each slide plate installation groove is arranged at intervals in the width direction of the upper deck. Usually, the depth of the slide plate installation groove is about 4mm, the width of the slide plate installation groove is about 150mm, and the arrangement interval between two adjacent slide plate installation grooves is about 50mm.

[0086] Each slide plate installation groove on the bottom surface of the upper deck is formed by a long strip-shaped installation groove main body and a installation groove countersunk head at the front end of the top push. The installation groove countersunk head is formed at the front end of the slide plate installation groove with a curved surface with a rounded corner R and a smooth transition sinking structure. The depth of the installation groove main body is about 4mm, and the maximum depth of the installation groove countersunk head is about 2.5 times the depth of the installation groove main body. In order to reliably fix the polytetrafluoroethylene slide plate installed in the slide plate installation groove, a threaded hole is opened obliquely (compared to the bottom surface of the upper deck) at the arc surface of the aforementioned installation groove countersunk head.

[0087] Each polytetrafluoroethylene slide plate used for being assembled in the slide plate installation groove is a long strip structure matching the long strip outline structure of the corresponding slide plate installation groove. The thickness of the polytetrafluoroethylene slide plate is about 7 mm, which is greater than the depth of the corresponding slide plate installation groove.

[0088] The upper part of the polytetrafluoroethylene skateboard, especially the top surface, is installed in the corresponding skateboard installation groove by bonding along the bottom surface of the skateboard installation groove. In this way, the polytetrafluoroethylene skateboard forms an integrally formed skateboard main body and skateboard countersunk head along the length direction of the skateboard installation groove. The lower part of the skateboard main body protrudes from the installation groove main body, and the protruding height is about 3mm. The skateboard countersunk head is sunk in the installation groove countersunk head, that is, the highest position of the bottom surface of the skateboard countersunk head is higher than the bottom side surface of the upper bearing plate. The bottom side surface of the skateboard countersunk head and the bottom side surface of the skateboard main body are smoothly transitioned with the curved surface structure in cooperation with the above-mentioned skateboard installation groove structure. The skateboard countersunk head is anchored in the installation groove countersunk head by a set screw installed in the threaded hole, and the set screw installed in place is also sunk in the installation groove countersunk head.

[0089] Through the above structure, the front end of each polytetrafluoroethylene slide plate is sunk into the bottom surface of the upper support plate with a countersunk head structure with a gradually curved surface, and no direct raised step can be formed, so that the cable saddle in the jacking advance can smoothly transition to the stainless steel plate, avoiding the jacking and squeezing of the end of the polytetrafluoroethylene slide plate by the cable saddle in the jacking advance.

[0090] Example 5

[0091] The rest of this embodiment is the same as that of Embodiment 4, except that:

[0092] The base plate for arranging the polytetrafluoroethylene slide plate is the bottom surface of the cable saddle body, and the upper bearing plate is removed.

[0093] Example 6

[0094] The rest of the contents of this embodiment are the same as those of Embodiment 1, Embodiment 2, Embodiment 3 or Embodiment 4, except that:

[0095] By removing the threaded hole in the countersunk head of the mounting groove, the set screw structure is also removed when the polytetrafluoroethylene slide plate is installed.

[0096] The above embodiments are only used to illustrate the present invention, but not to limit it.

[0097] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the above embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents, such as replacing the polytetrafluoroethylene slide plate (codenamed PTFE) with a modified polytetrafluoroethylene slide plate (codenamed M-PTFE), an ultra-high performance polytetrafluoroethylene slide plate (codenamed UHPF) or a modified ultra-high molecular weight polyethylene slide plate (codenamed M-UHMWPE) or other polymer slide plates; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A polymer slide plate installation structure for cable saddle pushing, comprising a polymer slide plate and a substrate on which the polymer slide plate is arranged; The base plate is formed on the push base of the saddle; Features: The top side surface of the base plate is formed with a plurality of slide plate installation grooves in a long strip structure along the longitudinal direction of the pusher in an inward concave structure; The polymer slide plate is a long strip structure matching the contour structure of the corresponding slide plate installation groove on the substrate; Each polymer slide plate is installed in a corresponding slide plate installation groove on the substrate, and the polymer slide plate is adjacent to the end of the pre-biased saddle and is installed in the corresponding slide plate installation groove with a countersunk structure that is flush with the top side surface of the substrate.

2. According to claim 1, the polymer slide plate installation structure for cable saddle push-up is characterized in that: The slide plate installation groove on the base plate is formed by a main body of the installation groove and a countersunk head of the installation groove at one end, and the countersunk head of the installation groove is formed at the end of the slide plate installation groove adjacent to the pre-biased saddle in a sunken structure with a curved surface transition; The depth of the main body of the slide plate installation groove is less than the thickness of the polymer slide plate; The maximum depth of the countersunk head of the slide plate mounting groove is greater than the thickness of the polymer slide plate; Correspondingly, the polymer slide plate installed in the corresponding slide plate installation groove has an integrally formed slide plate main body and a slide plate countersunk head; The lower part of the slide body is installed in the installation slot body, and the upper part of the slide body emerges from the installation slot body; The countersunk head portion of the skateboard is installed in the countersunk head portion of the mounting groove, and the top side surface of the countersunk head portion of the skateboard smoothly transitions with the top side surface of the skateboard main body portion in a curved structure. The lowest position of the top side surface of the countersunk head portion of the skateboard is at the end portion and is lower than the top side surface of the substrate.

3. The polymer slide plate installation structure for cable saddle push-up according to claim 2 is characterized in that: A threaded hole is provided in the countersunk head of the mounting groove on the base plate; Correspondingly, the countersunk head portion of the slide plate is installed in the countersunk head portion of the installation groove through a fixing screw, and the fixing screw installed in place is sunken in the countersunk head portion of the installation groove.

4. The polymer slide plate installation structure for cable saddle push-up according to claim 2 is characterized in that: The polymer slide plate includes but is not limited to a polytetrafluoroethylene slide plate, a modified polytetrafluoroethylene slide plate, an ultra-high performance polytetrafluoroethylene slide plate and a modified ultra-high molecular weight polyethylene slide plate; the thickness of the polymer slide plate is 6 to 8 mm; The depth of the main body of the installation groove on the substrate is 3 to 5 mm.

5. The polymer slide plate installation structure for cable saddle push-up according to claim 2 or 3, characterized in that: The top side surface of the substrate is divided into a pre-biased area, a push rear baffle installation area, a bearing area and a push front baffle installation area in sequence along the push depth direction; Under the partition of the push rear baffle installation area, there are a plurality of slide plate installation grooves between the pre-biased area and the bearing area, which correspond to each other in the longitudinal direction and are independent of each other. The slide plate installation groove 1 in the pre-biased area under the partition of the push rear baffle installation area is used to install a temporary polymer slide plate, and the slide plate installation groove 2 in the bearing area under the partition of the push rear baffle installation area is used to install a permanent polymer slide plate; The countersunk head of the mounting groove is formed at the end of the second mounting groove of the slide plate in the bearing area, and is used for countersunk mounting of the end of the permanent polymer slide plate.

6. The polymer slide plate installation structure for cable saddle push-up according to claim 5, characterized in that: The base plate is a lower support plate installed on the top of the grille.

7. A polymer slide plate installation structure for cable saddle push-up, comprising a polymer slide plate and a substrate on which the polymer slide plate is arranged; The base plate is formed at the bottom of the saddle; Features: The bottom surface of the base plate is formed with a plurality of slide plate installation grooves in a concave structure and along the top pushing direction, respectively, and in a long strip structure; The polymer slide plate is a long strip structure matching the contour structure of the corresponding slide plate installation groove on the substrate; Each polymer slide is installed in a corresponding slide installation groove on the substrate, and the top push-up front end of the polymer slide is installed and formed in the corresponding slide installation groove with a countersunk structure that is at the lowest level with the bottom surface of the substrate.

8. The polymer slide plate installation structure for cable saddle push-up according to claim 7, characterized in that: The slide plate installation groove on the base plate is composed of a main body of the installation groove and a countersunk head of the installation groove at one end, and the countersunk head of the installation groove is formed at the front end of the top push of the slide plate installation groove with a curved surface transition sinking structure; The depth of the main body of the slide plate installation groove is less than the thickness of the polymer slide plate; The maximum depth of the countersunk head of the slide plate mounting groove is greater than the thickness of the polymer slide plate; Correspondingly, the polymer slide plate installed in the corresponding slide plate installation groove has an integrally formed slide plate main body and a slide plate countersunk head; The upper part of the slide body is installed in the installation slot body, and the lower part of the slide body emerges from the installation slot body; The countersunk head portion of the skateboard is installed in the countersunk head portion of the installation groove, and the bottom surface of the countersunk head portion of the skateboard smoothly transitions with the bottom surface of the skateboard main body portion in a curved structure. The highest position of the bottom surface of the countersunk head portion of the skateboard is at the end and is higher than the bottom surface of the substrate.

9. The polymer slide plate installation structure for cable saddle push-up according to claim 8, characterized in that: A threaded hole is provided in the countersunk head of the mounting groove on the base plate; Correspondingly, the countersunk head portion of the slide plate is installed in the countersunk head portion of the installation groove through a fixing screw, and the fixing screw installed in place is sunken in the countersunk head portion of the installation groove.

10. The polymer slide plate installation structure for cable saddle push-up according to claim 8, characterized in that: The polymer slide plate includes but is not limited to a polytetrafluoroethylene slide plate, a modified polytetrafluoroethylene slide plate, an ultra-high performance polytetrafluoroethylene slide plate, and a modified ultra-high molecular weight polyethylene slide plate; the thickness of the polymer slide plate is 6 to 8 mm; The depth of the main body of the installation groove on the substrate is 3 to 5 mm.

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