Fixing device for track bed expansion joint formwork

Abstract

The utility model discloses a track bed expansion joint formwork fixing device which comprises a sliding groove plate, two sliding blocks, a formwork clamping piece and two sets of positioning and fixing assemblies, the two ends of the sliding groove plate are arranged in the middles of two long sleepers adjacent in the longitudinal direction respectively, strip-shaped guide holes are formed in the two ends of the sliding groove plate, the two sliding blocks are arranged in open grooves of the sliding groove plate, and the formwork clamping piece is arranged on the sliding groove plate. The two positioning and fixing assemblies are connected to the two sliding blocks correspondingly and penetrate through the two strip-shaped guide holes, the two sliding blocks are locked and connected into the sliding groove plate, and the lower portions of the two positioning and fixing assemblies are located under the strip-shaped guide holes and make contact with the opposite side walls of the two long sleepers adjacent in the longitudinal direction for limiting. The formwork clamping piece is fixedly connected to the bottom end of the middle of the sliding groove plate and used for being connected with a track bed expansion joint formwork in a clamping mode. The two positioning and fixing assemblies can be adjusted according to the distance between sleepers, so that the ballast bed expansion joint formwork between the sleepers is positioned and fixed, it is guaranteed that the ballast bed expansion joint formwork is not prone to deflection, and stability and perpendicularity of the ballast bed expansion joint formwork are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rail transit, and specifically relates to a fixing device for a track bed expansion joint form. BACKGROUND

[0002] With the rapid development of cities, urban rail transit gradually increases, various track bed forms diversify, the appearance quality of the track bed affects the final completion acceptance, and the straightness and centering of the track bed expansion joint affect the appearance quality of the track bed. The stability of the track bed expansion joint form and the perpendicularity of the upper portion and the lower portion thereof directly affect the appearance quality of the straightness of the expansion joint, so as to avoid track bed cracking caused by not being on a line.

[0003] At present, the track bed expansion joint form in urban rail transit mainly relies on the anchor bar on the bottom plate on both sides of the form to prevent the form from moving forward and backward, and the upper layer of steel bars of the track bed is lengthened to support the upper layer of the form and prevent movement. This type of fixing method has two disadvantages: ① the bottom anchor bar generally needs to be implemented when the expansion joint is set, so that the width interval and the transverse direction of the anchor bar cannot be guaranteed to be on a line, which causes the form to have a space for moving forward and backward. Meanwhile, when the structure of the track bed is too high, the middle reinforcement cannot guarantee that the track bed expansion joint form is completely fixed, and the track bed expansion joint form is prone to be skewed; ② the track bed in the circular tunnel is constructed by one-time construction, and the form at the expansion joint needs to be cut into four forms and spliced for use. Due to the variability of the distance between the sleepers and the fact that the forms cannot form a straight line after splicing, the form is skewed due to the impact of the concrete, the filling joint at the upper end of 3 cm cannot be consistent with the lower portion, which causes the filling joint on the outside to crack and skew, and even the forms on both sides of the center line of the track bed are not aligned, which seriously affects the construction quality of the track bed. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a fixing device for a track bed expansion joint form, which can adjust two groups of positioning and fixing components according to the distance between sleepers, so as to realize positioning and fixing of the track bed expansion joint form between the sleepers, ensure that the track bed expansion joint form is not prone to skewing, ensure the stability and perpendicularity of the track bed expansion joint form, and ensure the construction quality of the track bed.

[0005] The technical scheme of the utility model is as follows:

[0006] The utility model provides a kind of fixing device of track bed expansion joint template, including sliding groove plate, two sliders, template clamping piece and two groups of positioning and fixing components, sliding groove plate is long strip structure, the notch of sliding groove plate is upwards, sliding groove plate extends along the longitudinal direction of track bed, the bottom of the both ends of sliding groove plate is placed respectively on the middle part of two longitudinal adjacent long sleepers, the bottom of the both ends of sliding groove plate is provided with the strip guide hole that penetrates up and down, the axis of strip guide hole overlaps with the axis of sliding groove plate, two sliders are placed in the slot of sliding groove plate and are located respectively above two strip guide holes, two groups of positioning and fixing components are connected respectively on two sliders and lock two sliders in sliding groove plate, the lower part of two groups of positioning and fixing components is located below strip guide hole and is in contact with the side wall of two longitudinal adjacent long sleepers respectively opposite limit;The bottom of the middle part of sliding groove plate is fixedly connected with template clamping piece, the bottom of the middle part of sliding groove plate and template clamping piece are provided with the screw hole that penetrates up and down, the top of track bed expansion joint template is clamped on template clamping piece, fastening screw is sequentially passed through the screw hole on the middle part of sliding groove plate and template clamping piece from top to bottom and is locked and connected on the top of track bed expansion joint template, so that track bed expansion joint template is fixedly connected on sliding groove plate.

[0007] The slot of the sliding groove plate is inverted T-shaped slot, and the slider is inverted T-shaped slider.

[0008] The bottom of the both ends of the sliding groove plate is fixedly connected with a backing plate, the template clamping piece is selected from a double-T plate, the thickness of the backing plate is consistent with the thickness of the horizontal part of the double-T plate, the top surface of the horizontal part of the double-T plate is fixedly connected to the bottom surface of the middle part of the sliding groove plate, and the top of the track bed expansion joint template extends into the downward slot of the double-T plate and is clamped and connected therewith.

[0009] The sliding groove plate, the two sliders and the two groups of positioning and fixing components form a unit structure, the fixing device of the track bed expansion joint template includes a plurality of unit structures, the sliding groove plates of the plurality of unit structures are arranged in parallel on the two longitudinal adjacent long sleepers, the double-T plate is a strip structure, the double-T plate extends along the transverse direction of the track bed, and the top surface of the double-T plate is fixedly connected to the bottom of the middle part of the sliding groove plate of the plurality of unit structures.

[0010] Each of the two groups of positioning and fixing components includes a vertical limiting plate, a horizontal connecting plate, a screw rod and a locking nut, the top end of the vertical limiting plate is fixedly connected to the bottom surface of the horizontal connecting plate, the bottom end of the screw rod is fixedly connected to the top surface of the horizontal connecting plate, the top end of the screw rod passes through the strip guide hole of the sliding groove plate and the through hole of the slider from bottom to top, the slider and the screw rod are positioned along the axial direction of the strip guide hole, after the positioning is completed, the locking nut is threadedly connected to the screw rod from top to bottom and is in locking contact with the top surface of the slider, and at this time, the plate surfaces of the vertical limiting plates of the two groups of positioning and fixing components are in contact with the side walls of the two longitudinal adjacent long sleepers respectively opposite limit.

[0011] The locking nut is a butterfly nut.

[0012] The utility model discloses the advantages of:

[0013] (1), the utility model discloses be provided with the sliding groove board, make two groups of positioning fixed components connected to the sliding block can move along the sliding groove board, thereby make two groups of positioning fixed components can adjust position according to the tie between spacing make it with the side wall contact limit of two adjacent long ties of longitudinal, avoid the sliding groove board realize longitudinal displacement, guarantee the stability and perpendicularity of the bed expansion joint template fixed after being connected to the sliding groove board.

[0014] (2), the lower part of two groups of positioning fixed components of the utility model is vertical plate structure, and it is convenient to contact limit with the side wall of two adjacent long ties of longitudinal, and the plate structure, and the supporting surface is big, and the limit stability is high, and through locking nut and the upper part of screw rod are locked and are connected, and it is convenient to operate, improve the operation efficiency.

[0015] (3), the utility model discloses the template clamping piece selects double T board, and the template clamping piece is integral type structure, improves the stability of sliding groove board and bed expansion joint template connection, since the horizontal part of double T board can lift the sliding groove board to a certain height, so set up the backing plate at the both ends of sliding groove board, thereby improve the support stability of the both ends of sliding groove board on long tie. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the plan view of the utility model connection on the bed.

[0017] Figure 2 It is Figure 1 A-A section view in.

[0018] Figure 3 It is Figure 2 C part of enlargement in.

[0019] Figure 4 It is Figure 2 D part of enlargement in.

[0020] Figure 5 It is Figure 1 B-B section view in.

[0021] Figure 6 It is Figure 5 E part of enlargement in.

[0022] Figure 7 It is the plan view of the utility model sliding groove board.

[0023] Reference signs: 01 - track bed, 02 - long sleeper, 03 - track bed expansion joint template, 1 - sliding groove plate, 11 - strip-shaped guide hole, 12 - backing plate, 13 - screw hole, 2 - inverted T-shaped sliding block, 3 - positioning and fixing assembly, 31 - vertical limiting plate, 32 - horizontal connecting plate, 33 - screw rod, 34 - wing nut, 4 - double T plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] See Figures 1-6 A fixing device of a track bed expansion joint template, comprising a double T plate 4 with three groups of unit structures and strip structures, each group of unit structures comprising a sliding groove plate 1, two inverted T-shaped sliding blocks 2 and two positioning and fixing assemblies 3, the sliding groove plate 1 being in a strip-shaped structure, the notch of the sliding groove plate 1 facing upwards, the slot of the sliding groove plate 1 being an inverted T-shaped slot, the sliding groove plate 1 extending along the longitudinal direction of the track bed 01, the two ends of the sliding groove plate 1 being respectively arranged on the middle parts of two longitudinally adjacent long sleepers 02, the sliding groove plates 1 of the three groups of unit structures being parallel to each other and uniformly distributed on the two longitudinally adjacent long sleepers 02;

[0026] The bottom plate of each end of the sliding groove plate 1 is provided with a strip-shaped guide hole 11 (see Figure 7 ) penetrating upwards and downwards, the axis of the strip-shaped guide hole 11 overlapping the axis of the sliding groove plate 1, the two inverted T-shaped sliding blocks 2 being embedded into the inverted T-shaped slot of the sliding groove plate 1 and respectively located directly above the two strip-shaped guide holes 11, each positioning and fixing assembly 3 comprising a vertical limiting plate 31, a horizontal connecting plate 32, a screw rod 33 and a wing nut 34, the top end of the vertical limiting plate 31 being fixedly connected to the bottom surface of the horizontal connecting plate 32, the bottom end of the screw rod 33 being fixedly connected to the top surface of the horizontal connecting plate 32, the wing nut 34 being threadedly connected to the screw rod 33, the top end of the screw rod 33 penetrating the strip-shaped guide hole 11 of the sliding groove plate 1 and the through hole of the inverted T-shaped sliding block 2 from bottom to top, the inverted T-shaped sliding block 2 and the screw rod 33 being positioned along the axial direction of the strip-shaped guide hole 11, after the positioning, the wing nut 34 being threadedly connected to the screw rod 33 from top to bottom and being in locking contact with the top surface of the inverted T-shaped sliding block 2, at this time, the plate surfaces of the vertical limiting plates 31 of the two positioning and fixing assemblies 3 are respectively in contact with the opposite side walls of the two longitudinally adjacent long sleepers 02 for limiting;

[0027] The bottom end of each end of the sliding groove plate 1 is fixedly connected with a backing plate 12 (see Figure 3), the double T plate 4 extends along the transverse direction of the track bed 01, the top surface of the double T plate 4 is fixedly connected to the bottom end of the middle part of the three sets of sliding groove plates 1, the thickness of the gusset plate 12 is consistent with the thickness of the horizontal part of the double T plate 4, and the bottom plate of the middle part of the sliding groove plate 1 and the horizontal part of the double T plate 4 are provided with screw through holes 13 (see Figure 7 ), the top of the track bed expansion joint formwork 03 extends into the downward notch of the double T plate 4 and is clamped and connected, the fastening screws are sequentially locked and connected to the top of the track bed expansion joint formwork 03 from top to bottom after passing through the screw through holes 13 of the middle part of the sliding groove plate 1 and the double T plate 4, so that the track bed expansion joint formwork 03 is fixedly connected to the sliding groove plate 1.

[0028] During installation, first, the double T plate 4 is clamped on the top of the track bed expansion joint formwork 03, and the track bed expansion joint formwork 03 is fixedly connected to the three sliding groove plates 1 by fastening screws, the two ends of the three sliding groove plates 1 are respectively arranged on the middle part of the two longitudinally adjacent long sleepers 02, the butterfly nut 34 of each positioning and fixing assembly 3 is in a loosened state, the positions of the two inverted T-shaped sliding blocks 2 in each sliding groove plate 1 are adjusted, so that the plate surfaces of the two sets of vertical limiting plates 31 of each positioning and fixing assembly 3 on each sliding groove plate 1 are respectively in contact with and limited by the opposite side walls of the two longitudinally adjacent long sleepers 02, then the butterfly nut 34 of each positioning and fixing assembly 3 is locked, and the fixing of the track bed expansion joint formwork 03 is completed.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a track bed expansion joint template, characterized in that: The track includes a chute, two sliders, template clips, and two sets of positioning and fixing components. The chute is a long strip structure with its groove facing upwards. The chute extends longitudinally along the track bed, with each end resting on the middle of two longitudinally adjacent long sleepers. Each end of the chute has a vertically penetrating guide hole on its bottom plate, the axis of which overlaps with the axis of the chute. The two sliders are placed within the grooves of the chute and positioned directly above the two guide holes. The two sets of positioning and fixing components are connected to the two sliders and lock them securely in place. Inside the chute, the lower parts of the two sets of positioning and fixing components are located directly below the strip-shaped guide holes and respectively contact and limit the side walls of the two longitudinally adjacent long sleepers. The template clip is fixedly connected to the bottom end of the middle part of the chute. The bottom plate of the middle part of the chute and the template clip are provided with through screw holes that run vertically. The top of the track bed expansion joint template is clipped onto the template clip. The fastening screws pass through the screw holes in the middle part of the chute and the template clip from top to bottom and are then locked to the top of the track bed expansion joint template, so that the track bed expansion joint template is fixedly connected to the chute.

2. The fixing device for a track bed expansion joint template according to claim 1, characterized in that: The groove of the slide plate is an inverted T-shaped groove, and the slider is an inverted T-shaped slider, which is embedded in the inverted T-shaped groove of the slide plate.

3. The fixing device for a track bed expansion joint template according to claim 1, characterized in that: A pad is fixedly connected to the bottom of both ends of the chute plate. The template clamp is a double T plate. The thickness of the pad is the same as the thickness of the horizontal part of the double T plate. The top surface of the horizontal part of the double T plate is fixedly connected to the bottom surface of the middle part of the chute plate. The top of the track bed expansion joint template extends into the downward groove of the double T plate and is clamped and connected to it.

4. The fixing device for a track bed expansion joint template according to claim 3, characterized in that: The aforementioned chute plate, two sliders, and two sets of positioning and fixing components form a unit structure. The fixing device for the track bed expansion joint template includes multiple sets of unit structures. The chute plates of the multiple unit structures are arranged parallel to each other on two longitudinally adjacent long sleepers. The double T plate is a strip structure that extends laterally along the track bed. The top surface of the double T plate is fixedly connected to the bottom end of the middle part of the chute plate of the multiple unit structures.

5. The fixing device for a track bed expansion joint template according to claim 1, characterized in that: Each positioning and fixing assembly includes a vertical limiting plate, a horizontal connecting plate, a screw, and a locking nut. The top end of the vertical limiting plate is fixedly connected to the bottom surface of the horizontal connecting plate, and the bottom end of the screw is fixedly connected to the top surface of the horizontal connecting plate. The top end of the screw passes through the strip-shaped guide hole of the slide plate and the through hole on the slider from bottom to top. The slider and the screw move and are positioned along the axial direction of the strip-shaped guide hole. After the movement and positioning are completed, the locking nut is threaded onto the screw from top to bottom and locks into contact with the top surface of the slider. At this time, the plate surface of the vertical limiting plate of the two positioning and fixing assemblies respectively contacts and limits the opposite side walls of the two longitudinally adjacent long sleepers.

6. The fixing device for a track bed expansion joint template according to claim 5, characterized in that: The locking nut is a wing nut.

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