A complete set of high-precision pouring equipment for self-compacting concrete

Abstract

The present invention discloses a complete set of high-precision pouring equipment for self-compacting concrete, which relates to the technical field of railway track laying equipment and includes a base platform and steel bars extending out of both side surfaces of the base platform. A tightening mechanism capable of connecting with the steel bars is arranged on the top of the base platform. The tightening mechanism includes: a pressing beam assembly, a side fixing assembly, and a tightening assembly, which includes two groups of lever units movably installed on a crossbeam unit. One end of each lever unit is connected to a pulling unit through a slider unit, and the other end of each lever unit is connected to the crossbeam unit through a force application unit. When the force application unit is in a downward pressing state, both the pressing beam assembly and the side fixing assembly are in a pressing state. By setting a tightening mechanism composed of a pressing beam assembly, a side fixing assembly, and a tightening assembly, the present invention enables the time of the pressure received on both sides of the track slab on the base platform to be the same, and the magnitude of the pressure received to be consistent, which is beneficial to reducing the difference in pressure at each part of the track slab layer.

Description

Technical Field

[0001] The present invention relates to the technical field of railway track laying equipment, and specifically provides a complete set of equipment for high-precision pouring of self-compacting concrete. Background Art

[0002] High-speed railway tracks are usually ballastless tracks, which mainly consist of structures with a whole foundation of concrete, asphalt mixture, etc. replacing the ballast bed of loose gravel. They have strong integrity and high stability. The structure of the ballastless track mainly consists of a base platform made of reinforced concrete, an isolation layer made of geotextile, a filling layer formed by pouring self-compacting concrete, and a track slab layer at the top. To prevent the track slab layer from shifting, floating, and side-slipping on the base platform after the self-compacting concrete is poured, during the construction process, a corresponding complete set of equipment for high-precision pouring of self-compacting concrete is usually set up for auxiliary shaping;

[0003] Existing ones, for example, the Chinese patent publication number is: CN201738200U, and the name of this patent is "A device for limiting the laying of ballastless track slabs". In this patent, "first drill anchor bolt holes on the base, then use adhesive to glue the anchor bolts, fill the adhesive in the anchor bolt holes, and slowly screw in the anchor bolts at a uniform speed to form a full-thread form on the adhesive. After reaching the strength, the anchor bolts are fixedly cemented on the base concrete layer. At this time, adjust the position and height of the support screw on the track slab, install the floating pressure channel steel, and tighten the floating pressure bolts to make the floating pressure channel steel close to the surface of the track slab, and the anti-floating device can work normally to prevent the track slab from floating";

[0004] When the existing complete set of equipment for high-precision pouring of self-compacting concrete compresses and shapes the track slab layer, it mainly tightens the floating pressure bolts to make the floating pressure channel steel close to the surface of the track slab. A torque wrench is often used to screw the floating pressure bolts, so that the pressure values at each compressed position of the track slab layer tend to be the same. However, the above solution has the following deficiencies: Since most of the screw rods are exposed to the external environment, and the torque wrench indirectly judges the pressure received by the track slab layer through the resistance of the bolt rotation, when the screw rods are corroded or soiled, it is easy to have different resistances to the rotation of the bolts on different screw rods, and then there will be a deviation in judging the pressure values at each compressed position of the track slab layer, resulting in a large difference in the pressure values between different parts of the track slab layer. Summary of the Invention

[0005] The purpose of the present invention is to provide a complete set of equipment for high-precision pouring of self-compacting concrete to solve the deficiencies in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A complete set of high-precision pouring equipment for self-compacting concrete, including a base platform and steel bars extending out of both side faces of the base platform. A tightening mechanism capable of connecting with the steel bars is provided on the top of the base platform. The tightening mechanism includes:

[0008] A pressing beam assembly, which includes a cross beam unit. Pulling units capable of connecting with the steel bars are installed at both ends of the cross beam unit.

[0009] A side fixing assembly, which includes side limit columns located on one side of each cross beam unit. Pressure limiting units are installed on each side limit column. The pressure limiting units are in transmission connection with the cross beam unit through a transmission mechanism.

[0010] A tightening assembly, which includes two groups of lever units movably installed on the cross beam unit. One end of each lever unit is connected with the pulling unit through a slider unit, and the other end of each lever unit is connected with the cross beam unit through a force applying unit. When the force applying unit is in the downward pressing state, both the pressing beam assembly and the side fixing assembly are in the pressing state.

[0011] Preferably, the cross beam unit includes a cross beam column whose length direction line is parallel to the axis line of the steel bar. A horizontal accommodation cavity is provided in the cross beam column.

[0012] Preferably, the pulling unit includes a toothed rod vertically and movably penetrating the cross beam column. A slot adapted to be clamped with the steel bar is opened at the bottom end of the toothed rod. A blocking block is movably hinged at the notch of the slot. When in the blocking state, the blocking block can prevent the steel bar from detaching from the notch of the slot along the axis direction of the toothed rod.

[0013] Preferably, the top of the side limit column is vertically fixed to the bottom of the cross beam column. A vertical accommodation cavity is opened in the side limit column.

[0014] Preferably, the pressure limiting unit includes a round opening unit opened on the side wall of the vertical accommodation cavity. An internal threaded pipe extending into the vertical accommodation cavity is movably inserted into the round opening unit. A threaded rod is spirally inserted into the extending end of the internal threaded pipe. A first axial limiting unit is provided between the internal threaded pipe and the round opening unit.

[0015] Preferably, the first axial limiting unit includes a plurality of insertion openings opened at the extending end of the internal threaded pipe. Long strip grooves corresponding to the insertion openings are opened on the side surface of the internal threaded pipe. A plurality of communication openings communicating with the insertion openings are opened at the bottom of each long strip groove. A strip rod is movably inserted into each insertion opening. A connecting rod slidably connected with the strip rod is adaptively inserted into each communication opening. A clamping strip fixed to each connecting rod is provided in the long strip groove. The clamping strip has an extending state of being clamped with the round opening unit and an avoiding state of being completely retracted into the long strip groove.

[0016] Preferably, the round orifice unit includes a circular orifice through which the internally threaded tube movably passes. A plurality of wheel platforms are evenly distributed and installed on the inner wall surface of the circular orifice. A support ball in contact with the internally threaded tube is movably embedded on each of the wheel platforms. A clearance space capable of being engaged with the extended latch strip is formed between the wheel platforms.

[0017] Preferably, the transmission mechanism includes a gear meshing with the toothed rod, and the gear is fixed to one end of the threaded rod extending out of the vertical accommodation cavity.

[0018] Preferably, the slider unit includes a vertical sliding groove opened on the inner wall surface of the horizontal accommodation cavity. A slider is slidably clamped in the vertical sliding groove. A through opening for the toothed rod to movably pass through is opened at the top of the slider. A ratchet unit is installed in the through opening, and the ratchet unit can limit the downward movement of the toothed rod.

[0019] Preferably, the force application unit includes a threaded column spirally installed in the middle above the cross beam column. The bottom end of the threaded column is rotatably installed with a pressing plate located in the horizontal accommodation cavity, and a force arm rod is installed at the top end of the threaded column.

[0020] In the above technical solution, a complete set of equipment for high-precision pouring of self-compacting concrete provided by the present invention, by setting a tightening mechanism composed of a pressing beam assembly, a side fixing assembly and a tightening assembly. When the force application unit on the tightening assembly is in the downward pressing state, the two lever units simultaneously transmit the pressure to the corresponding pressing beam assembly and side fixing assembly, so that both the pressing beam assembly and the side fixing assembly are in the pressing state at the same time. Furthermore, the time of the pressure received on both sides of the track slab on the base table is the same, and the magnitude of the received pressure value is consistent. At the same time, it avoids the situation that the measured pressure value is inaccurate due to the corrosion of the screw in the prior art, which is beneficial to reducing the difference value of the pressure at each part of the track slab layer, making the pressure received at each part of the track slab layer in a balanced state, with simple operation and also beneficial to improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0022] Figure 1 It is the overall schematic diagram of a complete set of equipment for high-precision pouring of self-compacting concrete of the present invention on the base table;

[0023] Figure 2 For the present invention Figure 1 is the schematic cross-sectional view at B-B in;

[0024] Figure 3 Schematic diagram of the bottom end of the toothed rod of a complete set of high-precision pouring equipment for self-compacting concrete according to the present invention;

[0025] Figure 4 According to the present invention Figure 1 Schematic cross-sectional view at C-C in the present invention;

[0026] Figure 5 According to the present invention Figure 4 Enlarged view at A in the present invention;

[0027] Figure 6 Schematic diagram of the annular groove on the threaded rod of a complete set of high-precision pouring equipment for self-compacting concrete according to the present invention;

[0028] Figure 7 Schematic diagram of the round-mouth unit of a complete set of high-precision pouring equipment for self-compacting concrete on the side limit column according to the present invention;

[0029] Figure 8 Schematic diagram of the extended end of the internal threaded pipe of a complete set of high-precision pouring equipment for self-compacting concrete according to the present invention;

[0030] Figure 9 Axial cross-sectional view of the internal threaded pipe of a complete set of high-precision pouring equipment for self-compacting concrete according to the present invention;

[0031] Figure 10 Partially enlarged schematic cross-sectional view of the internal threaded pipe of a complete set of high-precision pouring equipment for self-compacting concrete according to the present invention;

[0032] Figure 11 Schematic diagram of the flat part on the toothed rod of a complete set of high-precision pouring equipment for self-compacting concrete according to the present invention.

[0033] Explanation of reference numerals:

[0034] 1. Base platform; 2. Steel bar; 3. Press beam assembly; 3.1 Cross beam unit; 3.11 Cross beam column; 3.12 Transverse accommodation cavity; 3.2 Pulling unit; 3.21 Rack; 3.22 Slot; 3.23 Stopper; 4. Side fixing assembly; 4.1 Side limiting column; 4.11 Vertical accommodation cavity; 4.2 Pressure limiting unit; 4.21 Round mouth unit; 4.211 Round opening; 4.212 Round table; 4.213 Support ball; 4.22 Internal thread pipe; 4.23 Threaded rod; 4.3 Transmission mechanism; 4.31 Gear; 4.32 Annular groove; 5. Tightening assembly; 5.1 Lever unit; 5.11 Straight rod body; 5.12 Fulcrum shaft; 5.13 Slot; 5.14 Roller; 5.2 Slide block unit; 5.21 Vertical chute; 5.22 Slide block; 5.23 Through hole; 5.24 Ratchet unit; 5.241 Ratchet tooth; 5.242 Torsion spring; 5.3 Force applying unit; 5.31 Threaded column; 5.32 Press plate; 5.33 Force arm rod; 6. First shaft limiting unit; 6.1 Insertion port; 6.2 Communication port; 6.3 Bar; 6.4 Connecting rod; 6.5 Long slot; 6.6 Clamping bar; 6.7 Spring; 6.8 Long strip opening; 6.9 Card slot; 7. Track plate layer; 8. Convex blocking part; 9. Shaft rod; 10. Contact wheel; 11. Friction plate; 12. Connecting rod; 13. Supporting block; 14. Magnet sheet; 15. Flat part; 16. Enclosing frame. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Please refer to Figure 1-11 , a complete set of self-compacting concrete high-precision pouring equipment provided by an embodiment of the present invention includes a base platform 1 and steel bars 2 extending out of both side surfaces of the base platform 1. A tightening mechanism capable of connecting with the steel bars 2 is provided on the top of the base platform 1. The tightening mechanism includes:

[0037] A press beam assembly 3, which includes a cross beam unit 3.1, and pulling units 3.2 capable of connecting with the steel bars 2 are installed at both ends of the cross beam unit 3.1;

[0038] A side fixing assembly 4, which includes side limiting columns 4.1 located on one side of each cross beam unit 3.1. A pressure limiting unit 4.2 is installed on each side limiting column 4.1, and the pressure limiting unit 4.2 is in transmission connection with the cross beam unit 3.1 through a transmission mechanism 4.3;

[0039] The tightening assembly 5 includes two sets of lever units 5.1 movably mounted on the crossbeam unit 3.1. One end of each lever unit 5.1 is connected to the pulling unit 3.2 through a slider unit 5.2, and the other end of each lever unit 5.1 is connected to the crossbeam unit 3.1 through a force application unit 5.3. When the force application unit 5.3 is in the downward pressure state, the pressing beam assembly 3 and the side fixing assembly 4 are both in the tightened state;

[0040] It should be noted that the base platform 1 is a rectangular platform made of reinforced concrete. Horizontal reinforcing bars 2 are preset on both side surfaces of the base platform 1. A track slab layer 7 is provided above the base platform 1, and the track slab layer 7 is also a plate-shaped structure precast and solidified from concrete. There is an accommodation space between the top of the base platform 1 and the track slab layer 7. A pouring port is reserved at the top of the track slab layer 7. A retaining frame 16 for sealing the side surface of the accommodation space is installed circumferentially on the track slab layer 7. Thus, the inner wall surface of the retaining frame 16, the bottom surface of the track slab layer 7, and the top surface of the base platform 1 form a containing space for self-compacting concrete. When the self-compacting concrete in the containing space solidifies, it forms a filling layer of the ballastless track. To prevent the track slab layer 7 from shifting, floating, and side-slipping on the base platform 1 under the action of the self-compacting concrete after pouring, usually during the construction process, corresponding high-precision pouring complete sets of equipment for self-compacting concrete are set up for auxiliary shaping;

[0041] Specifically, the technical solution adopted in this invention application is that a crossbeam unit 3.1 is arranged above the track slab layer 7. The bottom of the crossbeam unit 3.1 is in contact with the top surface of the track slab layer 7. The length direction line of the crossbeam unit 3.1 is parallel to the direction line of the reinforcing bar 2. Both ends of the crossbeam unit 3.1 are respectively connected to the reinforcing bar 2 through a pulling unit 3.2. At this time, the track slab layer 7 is vertically between the crossbeam unit 3.1 and the base platform 1. The side limiting column 4.1 fixed to the crossbeam unit 3.1 is located on the side of the track slab layer 7, and the pressure limiting unit 4.2 on the side limiting column 4.1 also fits against the side of the track slab layer 7. When the force application unit 5.3 is in the downward pressure state, at this time, the crossbeam unit 3.1 exerts a pressure on the track slab layer 7 towards the base platform 1, and at the same time, the pressure limiting unit 4.2 also exerts a pushing force on the side of the track slab layer 7. At this time, the track slab layer 7 is clamped both vertically and horizontally, and the pressing beam assembly 3 and the side fixing assembly 4 are both in the tightened state, thereby ensuring the fixed position of the track slab layer 7 and avoiding the situation that the track slab layer 7 shifts, floats, and side-slips on the base platform 1 under the action of the self-compacting concrete;

[0042] On the other hand, by providing a tightening mechanism composed of a pressing beam assembly, a side fixing assembly, and a tightening assembly, when the force application unit on the tightening assembly is in a downward pressing state, the two sets of lever units simultaneously transmit the pressure to the corresponding pressing beam assembly and side fixing assembly, so that both the pressing beam assembly and the side fixing assembly are simultaneously in a tightened state. As a result, the pressures received by both sides of the track slab on the base table are applied at the same time and have the same magnitude, while avoiding the situation in the prior art where the pressure value measurement is inaccurate due to the corrosion of the screw. This is beneficial to reducing the difference in pressure among various parts of the track slab layer, enabling the pressures received by various parts of the track slab layer to be in a balanced state. Moreover, the contact area with the track slab layer 7 is increased, and the pressure states on both sides of the track slab layer 7 can be controlled by a single force application unit 5.3, which is simple to operate and also beneficial to improving the construction efficiency.

[0043] Another embodiment provided by the present invention, the crossbeam unit 3.1 includes a crossbeam column 3.11 whose length direction line is parallel to the axis line of the steel bar 2. A transverse accommodation cavity 3.12 is provided inside the crossbeam column 3.11. The transverse accommodation cavity 3.12 is a cavity with a rectangular column structure. The cross-section of the crossbeam column 3.11 is rectangular. The bottom surface of the crossbeam column 3.11 is in close contact with the top surface of the track slab layer 7, thereby increasing the force-bearing area. Preferably, reinforcing rib plates are provided inside the transverse accommodation cavity 3.12 to increase the bending resistance of the crossbeam column 3.11. In actual use, after lifting the crossbeam column 3.11 and placing it on the track slab layer 7, both ends of the crossbeam column 3.11 extend beyond the width direction of the track slab layer 7. The length direction line of the crossbeam column 3.11 is parallel to the axis line of the steel bar 2, and the length direction line of the crossbeam column 3.11 is parallel to the horizontal plane.

[0044] Another embodiment provided by the present invention, the pulling unit 3.2 includes a rack bar 3.21 vertically and movably penetrating through the cross beam column 3.11. The rack bar 3.21 is a cylindrical rod. Plane portions 15 are provided on both sides of the rack bar 3.21. The axis line of the rack bar 3.21 is perpendicular to the axis line of the cross beam column 3.11. A slot 3.22 capable of being adaptively clamped with the steel bar 2 is provided at the bottom end of the rack bar 3.21. A stopper 3.23 is movably hinged on the notch of the slot 3.22. The stopper 3.23 has a blocking state and an open state on the slot 3.22. The stopper 3.23 in the blocking state can prevent the steel bar 2 from detaching from the notch of the slot 3.22 along the axial direction of the rack bar 3.21. The stopper 3.23 in the open state can allow the steel bar 2 to detach from the notch of the slot 3.22 along the axial direction of the rack bar 3.21. Preferably, a convex blocking portion 8 is fixed on the inner wall surface of the notch end of the slot 3.22. The convex blocking portion 8 can prevent the stopper 3.23 from detaching from the slot 3.22. When the convex blocking portion 8 contacts the stopper 3.23, the stopper 3.23 is in a state of blocking the notch of the slot 3.22 at this time. When the convex blocking portion 8 is separated from the stopper 3.23 and the convex blocking portion 8 is located within the notch of the slot 3.22, the convex blocking portion 8 is in an open state at this time;

[0045] During the actual use process, when the cross beam column 3.11 is placed on the track slab layer 7, the rack bar 3.21 descends synchronously with the cross beam column 3.11, and the bottom end of the rack bar 3.21 also approaches the steel bar 2. When the steel bar 2 is clamped with the slot 3.22, the stopper 3.23 is affected by the force of the steel bar 2 at this time and switches from the blocking state to the open state, so that the steel bar 2 enters from the notch of the slot 3.22. When the steel bar 2 contacts the bottom of the slot 3.22, the stopper 3.23 returns from the open state to the blocking state under the action of gravity. As the cross beam column 3.11 continues to move downward, the rack bar 3.21 cannot continue to descend under the support of the steel bar 2 at this time, so that the rack bar 3.21 moves upward with the cross beam column 3.11 as a reference until the cross beam column 3.11 contacts the track slab layer 7. At this time, the vertical distance between the cross beam column 3.11 and the steel bar 2 is determined.

[0046] Another embodiment provided by the present invention is that the top of the lateral confinement column 4.1 is vertically fixed to the bottom of the crossbeam column 3.11. A vertical accommodation cavity 4.11 is provided inside the lateral confinement column 4.1, and the vertical accommodation cavity 4.11 is a cylindrical cavity. Among them, the pressure limit unit 4.2 includes a circular opening unit 4.21 opened on the side wall of the vertical accommodation cavity 4.11. The circular opening unit 4.21 faces the direction where the track slab layer 7 is located. An internally threaded tube 4.22 extending into the vertical accommodation cavity 4.11 is movably inserted into the circular opening unit 4.21. The axis line of the internally threaded tube 4.22 is parallel to the length direction line of the crossbeam column 3.11, and the axis line of the internally threaded tube 4.22 is perpendicular to the axis line of the lateral confinement column 4.1. A threaded rod 4.23 is spirally inserted into the extending end of the internally threaded tube 4.22. One end of the threaded rod 4.23 extends outside the vertical accommodation cavity 4.11. A first axial limit unit 6 is provided between the internally threaded tube 4.22 and the circular opening unit 4.21. The extended state of the first axial limit unit 6 can limit the axial rotation of the internally threaded tube 4.22 in the circular opening unit 4.21;

[0047] During actual use, when the first axial limit unit 6 is in the extended state, if the rack 3.21 moves upward with the crossbeam column 3.11 as a reference, at this time, under the action of the transmission mechanism 4.3, the threaded rod 4.23 rotates positively. At this time, the internally threaded tube 4.22 undergoes a protruding movement in the direction of the track slab layer 7 under the spiral drive of the threaded rod 4.23. When the extending end of the internally threaded tube 4.22 contacts the track slab layer 7, at this time, the first axial limit unit 6 switches from the extended state to the retracted state. Thus, the first axial limit unit 6 no longer restricts the axial rotation of the internally threaded tube 4.22 in the circular opening unit 4.21. Furthermore, when the threaded rod 4.23 continues to rotate positively, the internally threaded tube 4.22 rotates coaxially with the threaded rod 4.23. At this time, the extending end of the internally threaded tube 4.22 fits against the side surface of the track slab layer 7, that is, the pressure limit unit 4.2 fits against the side surface of the track slab layer 7.

[0048] Another embodiment provided by the present invention, the first axial limit unit 6 includes a plurality of insertion openings 6.1 formed at the extending end of the internal threaded tube 4.22. The length direction line of the insertion opening 6.1 is parallel to the axis line of the internal threaded tube 4.22. A long slot 6.5 corresponding to each insertion opening 6.1 is formed on the side surface of the internal threaded tube 4.22. A plurality of communication ports 6.2 communicating with the insertion openings 6.1 are formed at the bottom of each long slot 6.5. A strip bar 6.3 is movably inserted into each insertion opening 6.1. One end of each strip bar 6.3 extends outside the insertion opening 6.1, and the end of the strip bar 6.3 extending outside the insertion opening 6.1 is a rough end. The other end of each strip bar 6.3 is connected to the inner bottom of the insertion opening 6.1 through a spring 6.7. A connecting rod 6.4 slidably connected to the strip bar 6.3 is adaptively inserted into each communication port 6.2. A clamping strip 6.6 fixed to each connecting rod 6.4 is arranged in the long slot 6.5. The clamping strip 6.6 has an extended state for clamping with the round opening unit 4.21 and a retracted state completely retracted into the long slot 6.5 for avoidance;

[0049] Specifically, the sliding connection manner is that the cross-section of the rod body of the strip bar 6.3 is a rectangular rod. A plurality of long slots 6.8 corresponding to the connecting rods 6.4 are formed on the side surface of the strip bar 6.3. The included angle range between the length direction line of the long slot 6.8 and the length direction line of the strip bar 6.3 is 40 degrees to 45 degrees. Preferably, the included angle between the length direction line of the long slot 6.8 and the length direction line of the strip bar 6.3 is 45 degrees. A clamping slot 6.9 for clamping with the strip bar 6.3 is formed at the bottom end of the connecting rod 6.4. A shaft rod 9 movably penetrates through the long slot 6.8, and both ends of the shaft rod 9 are rotatably connected to the inner wall surface of the clamping slot 6.9;

[0050] Preferably, a contact wheel 10 is movably installed at one end of the strip bar 6.3 extending outside the insertion opening 6.1. The wheel body of the contact wheel 10 is connected to the strip bar 6.3 through a one-way ratchet. The wheel body of the contact wheel 10 is an anti-slip rubber wheel;

[0051] In actual use, when the extending end of the internal threaded tube 4.22 contacts the track slab layer 7, at this time, the strip bar 6.3 is completely in the insertion opening 6.1 under the reaction force of the track slab layer 7, and at the same time, the spring 6.7 is in a compressed deformation state. The clamping strip 6.6 is in a retracted state completely retracted into the long slot 6.5 under the pulling action of the long slot 6.8 and the connecting rod 6.4, that is, the first axial limit unit 6 is in a retracted state; during the coaxial rotation of the internal threaded tube 4.22 along with the threaded rod 4.23, the contact wheel 10 can roll on the track slab layer 7;

[0052] Similarly, when the extended end of the internal-threaded tube 4.22 moves away from the track slab layer 7, the clamping strip 6.6 switches from the avoidance state in the long slot 6.5 to the extended state where it can be clamped with the round-mouth unit 4.21. Specifically, during this process, the strip rod 6.3 extends outside the insertion opening 6.1 again under the elastic deformation restoring force of the spring 6.7. While the strip rod 6.3 extends, the contact wheel 10 still contacts the track slab layer 7, and the contact wheel 10 cannot rotate under the action of the one-way ratchet;

[0053] That is to say, when the threaded rod 4.23 rotates forward, the contact wheel 10 can roll on the side surface of the track slab layer 7, and the frictional force between the strip rod 6.3 and the track slab layer 7 is small. When the threaded rod 4.23 rotates backward, the contact wheel 10 cannot roll on the side surface of the track slab layer 7, and the frictional force between the strip rod 6.3 and the track slab layer 7 is the largest, which is beneficial to the clamping strip 6.6 extending from the long slot 6.5, and further beneficial to the first axial limit unit 6 switching from the retracted state to the extended state.

[0054] Another embodiment provided by the present invention, the round-mouth unit 4.21 includes a circular opening 4.211 through which the internal-threaded tube 4.22 movably passes. A plurality of wheel platforms 4.212 are evenly distributed and installed on the inner wall surface of the circular opening 4.211. Support balls 4.213 in contact with the internal-threaded tube 4.22 are movably embedded on each wheel platform 4.212. The sphere diameter of the support ball 4.213 is greater than the groove width of the long slot 6.5, and the support ball 4.213 can cross the long slot 6.5. A gap space that can be clamped with the extended clamping strip 6.6 is formed between each wheel platform 4.212. During actual use, the support ball 4.213 can reduce the frictional force between the wheel platform 4.212 and the outer wall surface of the internal-threaded tube 4.22. When the clamping strip 6.6 is clamped with the gap space, the first axial limit unit 6 is in the extended state at this time.

[0055] Another embodiment provided by the present invention, the transmission mechanism 4.3 includes a gear 4.31 meshing with the toothed rod 3.21. The gear 4.31 is fixed to one end of the threaded rod 4.23 extending out of the vertical accommodation cavity 4.11. The gear 4.31 meshes with the toothed rod 3.21. When the toothed rod 3.21 moves upward with the crossbeam column 3.11 as a reference, at this time, the gear 4.31 drives the threaded rod 4.23 to rotate forward. The transmission mechanism 4.3 further includes an annular groove 4.32 opened in the circumferential direction of the threaded rod 4.23. One side wall of the annular groove 4.32 is attached to the inner wall surface of the vertical accommodation cavity 4.11, and the other side wall of the annular groove 4.32 is attached to the outer wall surface of the side limit column 4.1. The toothed rod 3.21 is limited by moving axially through the annular groove 4.32.

[0056] Another embodiment provided by the present invention, the slider unit 5.2 includes a vertical chute 5.21 opened on the inner wall surface of the transverse accommodation cavity 3.12. A slider 5.22 is slidably clamped in the vertical chute 5.21. A through hole 5.23 for the toothed rod 3.21 to move through is opened at the top of the slider 5.22. A ratchet unit 5.24 is installed in the through hole 5.23. The ratchet unit 5.24 can limit the downward movement of the toothed rod 3.21;

[0057] The ratchet unit 5.24 includes ratchet teeth 5.241 distributed on both sides of the toothed rod 3.21. Each ratchet tooth 5.241 is hinged to the inner wall surface of the through hole 5.23. A torsion spring 5.242 is installed at the hinged end of the ratchet tooth 5.241. The ratchet tooth 5.241 can engage with the toothed rod 3.21 unidirectionally;

[0058] In actual use, when the toothed rod 3.21 moves upward with the cross beam column 3.11 as a reference, at this time the ratchet tooth 5.241 allows the toothed rod 3.21 to move smoothly. When the toothed rod 3.21 moves downward with the cross beam column 3.11 as a reference, at this time the ratchet tooth 5.241 meshes with the toothed rod 3.21 for limiting, thereby preventing the movement of the toothed rod 3.21.

[0059] Another embodiment provided by the present invention, the force application unit 5.3 includes a threaded column 5.31 spirally installed in the middle above the cross beam column 3.11. One end of the threaded column 5.31 extends into the transverse accommodation cavity 3.12. A pressing plate 5.32 located in the transverse accommodation cavity 3.12 is rotatably installed at the bottom end of the threaded column 5.31. The plate surface of the pressing plate 5.32 is parallel to the horizontal plane. A force arm rod 5.33 is installed at the top end of the threaded column 5.31. The rod body of the force arm rod 5.33 is hinged to the side surface of the top end of the threaded column 5.31. The rod body of the force arm rod 5.33 can be parallel to the horizontal plane;

[0060] In actual use, by rotating the force arm rod 5.33 around the threaded column 5.31 as the center, the threaded column 5.31 can axially rotate. For example, when the threaded column 5.31 rotates axially in the positive direction, at this time the threaded column 5.31 drives the pressing plate 5.32 to move downward, then the force application unit 5.3 is in the downward pressing state. Similarly, when the threaded column 5.31 drives the pressing plate 5.32 to move upward, then the force application unit 5.3 is in the upward lifting state. Preferably, the force arm rod 5.33 can be a rod body composed of telescopic sleeves. On the one hand, it can be telescoped for easy storage. On the other hand, it can be clamped with the force application unit 5.3 on another adjacent group, thereby preventing the threaded column 5.31 from loosening.

[0061] Another embodiment provided by the present invention, the lever unit 5.1 includes a straight rod body 5.11 located in the lateral accommodation cavity 3.12. A fulcrum shaft 5.12 fixed to the wall surface of the lateral accommodation cavity 3.12 penetrates through the side surface of the straight rod body 5.11 movably. One end of the straight rod body 5.11 can be in contact with the bottom of the pressing plate 5.32. A slot 5.13 is formed on the side of the slider 5.22 facing the straight rod body 5.11. The other end of the straight rod body 5.11 extends into the slot 5.13. Preferably, a roller 5.14 is rotatably installed at the end of the straight rod body 5.11 located in the slot 5.13, so as to reduce the friction force when the straight rod body 5.11 moves in the slot 5.13;

[0062] During the actual use process, when the force application unit 5.3 is in the downward pressure state, that is, when the threaded column 5.31 drives the pressing plate 5.32 to move downward, at this time, one end of the straight rod body 5.11 in contact with the bottom of the pressing plate 5.32 is squeezed and moves downward, so that the other end of the straight rod body 5.11 moves upward, thereby driving the slider 5.22 to move upward along the vertical chute 5.21. At this time, under the meshing action of the ratchet unit 5.24, the toothed rod 3.21 moves upward again with the cross beam column 3.11 as a reference, so that the vertical distance between the cross beam column 3.11 and the steel bar rod 2 is further reduced, and a further pressing effect on the track slab layer 7 on the base table 1 is achieved.

[0063] Another embodiment provided by the present invention, the vertical accommodation cavity 4.11 is provided with a connecting rod 12 fixed to the slider 5.22. There are two connecting rods 12, and the length direction lines of the two connecting rods 12 are both parallel to the axis line of the side limiting column 4.1. The connecting rod 12 penetrates through the bottom wall of the lateral accommodation cavity 3.12 and the top wall of the vertical accommodation cavity 4.11 movably. A supporting block 13 is provided in the vertical accommodation cavity 4.11 below the internal thread tube 4.22. Both ends of the supporting block 13 are perpendicularly fixed to the corresponding connecting rod 12. The supporting block 13 is an iron block, and a magnet sheet 14 is magnetically adsorbed on the top of the supporting block 13. A friction plate 11 is fixed to the top of the magnet sheet 14;

[0064] During the actual use process, when the toothed rod 3.21 moves upward again with the cross beam column 3.11 as a reference, at this time, the friction plate 11 is in contact with the bottom of the internal thread tube 4.22. Under the action of the friction force, the axial rotation of the internal thread tube 4.22 is limited again. At this time, the extending end of the internal thread tube 4.22 further squeezes the side surface of the track slab layer 7, playing a further pressing role on the side surface of the track slab layer 7. When the extrusion force of the extending end of the internal thread tube 4.22 on the side surface of the track slab layer 7 is greater than the friction force between the outside of the internal thread tube 4.22 and the friction plate 11, at this time, the internal thread tube 4.22 continues to rotate forward along with the threaded rod 4.23, and the internal thread tube 4.22 is in a sliding state on the friction plate 11 until the cross beam column 3.11 is in contact with the track slab layer 7.

[0065] Only some exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A complete set of equipment for high-precision pouring of self-compacting concrete, comprising a base (1) and steel bars (2) extending from two sides of the base (1), characterized in that: A clamping mechanism capable of being connected to a reinforcement bar (2) is provided on the top of the base platform (1), and the clamping mechanism comprises: A compression beam assembly (3), comprising a cross beam unit (3.1), wherein both ends of the cross beam unit (3.1) are provided with pulling units (3.2) that can be connected to a reinforcement bar (2); A side fixing assembly (4), comprising a side limit column (4.1) located on one side of each cross beam unit (3.1), a compression limit unit (4.2) being mounted on each side limit column (4.1), and the compression limit unit (4.2) being transmission-connected to the cross beam unit (3.1) via a transmission mechanism (4.3); A tightening assembly (5) comprising two groups of lever units (5.1) movably mounted on the crossbeam unit (3.1), one end of each lever unit (5.1) being connected to the pulling unit (3.2) via a slider unit (5.2), and the other end of each lever unit (5.1) being connected to the crossbeam unit (3.1) via a force applying unit (5.3), and when the force applying unit (5.3) is in a downward pressing state, the compression beam assembly (3) and the side fixing assembly (4) are both in a tightening state; The crossbeam unit (3.1) comprises a crossbeam column (3.11) whose length direction line is parallel to the axis center line of the reinforcement bar (2), and a transverse accommodation cavity (3.12) is provided in the crossbeam column (3.11); The pulling unit (3.2) comprises a toothed rod (3.21) that movably penetrates the crossbeam column (3.11) in a vertical manner, a slot (3.22) that can be adapted to engage with the reinforcing rod (2) is provided at the bottom end of the toothed rod (3.21), a stopper (3.23) is movably hinged on the notch of the slot (3.22), and the stopper (3.23) can prevent the reinforcing rod (2) from escaping from the notch of the slot (3.22) along the axial direction of the toothed rod (3.21) in a blocking state; The top of the side limit column (4.1) is vertically fixed to the bottom of the crossbeam column (3.11), and a vertical accommodation cavity (4.11) is provided in the side limit column (4.1); The compression limit unit (4.2) comprises a round-mouth unit (4.21) provided on the side wall of the vertical accommodation cavity (4.11), an internally threaded tube (4.22) extending into the vertical accommodation cavity (4.11) being movably inserted into the round-mouth unit (4.21), a threaded rod (4.23) being spirally inserted into the extending end of the internally threaded tube (4.22), and a first axial limit unit (6) being provided between the internally threaded tube (4.22) and the round-mouth unit (4.21); The transmission mechanism (4.3) comprises a gear (4.31) meshing with the gear rod (3.21), and the gear (4.31) is fixed to an end of the threaded rod (4.23) extending out of the vertical accommodation cavity (4.11); The slider unit (5.2) comprises a vertical slide groove (5.21) provided on the inner wall surface of the transverse accommodation cavity (3.12), a slider (5.22) being slidably engaged in the vertical slide groove (5.21), a through hole (5.23) for the gear rod (3.21) to movably pass through being provided at the top of the slider (5.22), a ratchet unit (5.24) being installed in the through hole (5.23), and the ratchet unit (5.24) being capable of limiting the downward movement of the gear rod (3.21); The force applying unit (5.3) comprises a threaded column (5.31) spirally mounted in the middle above the crossbeam column (3.11), a pressure plate (5.32) located in the transverse accommodation cavity (3.12) being rotatably mounted at the bottom end of the threaded column (5.31), and a force arm (5.33) being mounted at the top end of the threaded column (5.31).

2. A complete set of equipment for high-precision pouring of self-compacting concrete according to claim 1, characterized in that: The first axis limit unit (6) comprises a plurality of plug-in interfaces (6.1) provided at the insertion end of the internal threaded tube (4.22); a long groove (6.5) corresponding to each plug-in interface (6.1) is provided on the side surface of the internal threaded tube (4.22); a plurality of connecting ports (6.2) connected to the plug-in interface (6.1) are provided at the bottom of each of the long grooves (6.5); a bar (6.3) is movably inserted into each of the plug-in interfaces (6.1); a connecting rod (6.4) slidably connected to the bar (6.3) is adapted to be inserted into each of the connecting ports (6.2); a clamping strip (6.6) fixed to each of the connecting rods (6.4) is provided in the long groove (6.5); the clamping strip (6.6) has an extended state in which it is clamped with the round mouth unit (4.21) and an avoidance state in which it is completely retracted into the long groove (6.5).

3. A complete set of equipment for high-precision pouring of self-compacting concrete according to claim 2, characterized in that: The circular opening unit (4.21) comprises a circular opening (4.211) for the internally threaded tube (4.22) to movably pass through, a plurality of wheel platforms (4.212) are evenly distributed and installed on the inner wall surface of the circular opening (4.211), each of the wheel platforms (4.212) is movably embedded with a supporting ball (4.213) in contact with the internally threaded tube (4.22), and a gap space capable of being engaged with a clamping strip (6.6) in an extended state is formed between the wheel platforms (4.212).

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