Bottom die supporting system

Abstract

The invention relates to the field of bridge construction equipment, and particularly discloses a bottom die supporting system which comprises a supporting column and a supporting rail, an adjusting wedge block assembly is installed between the supporting column and the supporting rail, the adjusting wedge block assembly can conveniently adjust the height and the horizontal value of a supporting rod set, and the supporting rod set is installed on the supporting rail. A walkway bracket is installed at the end of each supporting rod set, top seats are arranged at the two ends of each supporting rod set, top blocks are installed in the top seats, the top blocks are in threaded connection with screws, the screws can push the top blocks on the adjacent supporting rod sets when rotating, and therefore the distance between the adjacent supporting rod sets can be rapidly adjusted during installation. And the guide plate is further arranged below the supporting rod set, the limiting and guiding effects can be achieved when the upper supporting rail is hoisted, and the high safety is achieved in the installation process.

Description

Technical Field

[0001] The invention belongs to the field of bridge construction equipment, and in particular relates to a bottom formwork support system. Background Art

[0002] During the bridge construction process, molds are needed for pouring. Some molds have angled bevel structures under the bottom molds. Existing bottom mold support devices are mostly support frames with fixed angles and heights, and are constructed by on-site processing and welding, which not only consumes man-hours but also has high safety risks and cannot be recycled.

[0003] The patent document with application number "CN2023212887129" discloses an adjustable No. 0 block special-shaped support frame, including: a lower chord; an upper chord, which is located above the lower chord, and the front end of the upper chord is hinged to the front end of the lower chord; a plurality of support adjustment members are installed between the upper chord and the lower chord, and the support adjustment member includes a lower fixed portion, an upper hinged portion, and a connecting portion located between the lower fixed portion and the upper hinged portion and capable of driving the fixed portion and the upper hinged portion to move closer to or away from each other, the lower fixed portion is installed on the lower chord, and the upper hinged portion is hinged to the upper chord. Although the support member in the comparative document can adapt to the bottom mold of different angles and provide adjustable angle support, its height adjustment is limited, and it is impossible to quickly and conveniently adjust the spacing between adjacent support frames during hoisting, and it is impossible to limit and oppose the track, and it is easy to slip, so that it also takes too much man-hours in the installation process and still has a high safety hazard.

[0004] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0005] The purpose of the present invention is to provide a bottom mold support system, so as to overcome the defects of the existing adjustable mold support frame that the installation spacing cannot be adjusted conveniently and quickly during the installation process, the installation efficiency is low, and it is easy to slip on the track, posing a safety hazard.

[0006] To achieve the above-mentioned purpose, the present invention provides a bottom mold support system, including a support column and a support rail, the number of the support rails is more than two and they are arranged parallel to each other, the top of the support column is fixedly connected to the support rail through an adjusting wedge block assembly, a plurality of support rod groups are arranged on the support rail, the support rod group includes a lower chord rod and an upper chord rod, the two ends of the lower chord rod span across each of the support rails and the bottom thereof abuts against the top of the support rail, one end of the upper chord rod is rotatably connected to one end of the lower chord rod, a plurality of adjusting rod groups are connected between the lower chord rod and the upper chord rod, and the connecting end of the adjusting rod group can Telescopic to adjust the angle between the upper chord and the lower chord; a walkway bracket is connected between the other end of the upper chord and the other end of the lower chord; a guide plate is installed at the bottom of the lower chord, and the guide plate is provided with a first guide surface, and the first guide surface abuts against the side of the support rail, and a detachable top seat is also provided at both ends of the lower chord, and a detachable top block is provided in the top seat, and a screw is installed in the top block, and when the screw rotates, its end can abut against the side of the adjacent top block, so that the adjacent support rod groups are moved away from each other; a detachable cross connection is connected between each of the lower chords.

[0007] Preferably, in the above technical solution, the adjusting wedge block assembly includes a longitudinal wedge block and a transverse wedge block, and the number of the longitudinal wedge blocks is two. The longitudinal wedge block is provided with a mounting surface and two first inclined surfaces, and the mounting surfaces are respectively fixedly connected to the bottom of the support rail and the top of the support column, and the two first inclined surfaces are symmetrically distributed about the center line of the longitudinal wedge block; the number of the transverse wedge blocks is two and they are clamped between the two longitudinal wedge blocks, and a first through hole is provided through both ends of the transverse wedge block, and two second inclined surfaces are symmetrically provided between the two ends of the transverse wedge block, and the second inclined surfaces are abutted against the first inclined surfaces, and a pull rod is also installed between the two transverse wedge blocks, and the two ends of the pull rod pass through the first through hole and are installed with tightening nuts and locking nuts. When the tightening nuts at both ends of the pull rod are close to each other, the transverse wedge blocks can approach each other, thereby making the two longitudinal wedge blocks move away from each other.

[0008] Preferably, in the above technical solution, the walkway bracket includes an extended cross bar and an extended strut, one end of the extended cross bar is rotatably connected to the other end of the upper chord, one end of the extended strut is rotatably connected to the other end of the lower chord, and the other end of the extended strut is rotatably connected to the middle part of the extended cross bar.

[0009] Preferably, in the above technical solution, a connecting plate is welded at the middle part of the extended cross bar, and a first long hole is provided on the connecting plate, and the length direction of the first long hole is consistent with the length direction of the extended cross bar, and the walkway bracket also includes a movable support, one end of the movable support is fixedly connected to the long hole by a bolt, and the other end of the movable support is rotatably connected to the other end of the extended support rod.

[0010] Preferably, in the above technical solution, the guide plate is further provided with a second guide surface, an edge of the second guide surface is connected to an edge of the first guide surface, and the other end of the second guide surface is inclined in a direction away from the side of the support rail.

[0011] Preferably, in the above technical solution, a second long hole is provided on the top of the guide plate, and the length direction of the second long hole is consistent with the length direction of the lower chord.

[0012] Preferably, in the above technical solution, a guide groove is provided on the top of the top seat, and two ends of the guide groove pass through the two ends of the top seat, and the directions indicated by the two ends of the guide groove are consistent with the length direction of the support rail; a limiting groove is also provided on the top of the top seat, and the limiting groove is located in the middle of the guide groove and the width of the limiting groove is greater than the width of the guide groove, and the top block can be installed in the limiting groove, and the cross-section of the top block and the cross-section of the limiting groove are both square, and screw holes are provided on both sides of the top block, and the screw holes match the screw rod, and the screw rod can pass through the guide groove.

[0013] Preferably, in the above technical solution, a first nail hole is opened through the top and bottom of the top seat, and a second nail hole is opened through the top and bottom of the support rail, and the hole position of the second nail hole is consistent with the hole position of the first nail hole; it also includes a stud, which can pass through the first nail hole and the second nail hole at the same time and its two ends are locked by nuts.

[0014] Preferably, the above technical solution also includes a guard plate, one end of which is rotatably mounted on the stud, and a snap-in is provided on the side of the other end of the guard plate, which can be snapped onto an adjacent stud, and the guard plate can cover a partial area of ​​the limiting groove.

[0015] Preferably, in the above technical solution, a plurality of through holes are opened along the length direction of the screw, and the axes of the through holes intersect the axis of the screw at right angles.

[0016] Compared with the existing technology, the present invention has the following beneficial effects:

[0017] 1. The support columns and support rails of the bottom mold support system in the present invention are connected by adjusting wedge blocks. The support rod group is installed on the support rails, and the height and level of the support rod group can be easily adjusted. Top seats are provided at both ends of the support rod group. Top blocks are installed in the top seats. The top blocks are threadedly connected to the screw rods. When the screw rods rotate, the top blocks on the adjacent support rod groups can be pushed, so that the distance between the adjacent support rod groups can be quickly adjusted during installation. A guide plate is also provided under the support rod group, which can play a role of limiting and guiding when hoisting on the support rails, so that the installation process has higher safety.

[0018] 2. The adjusting wedge block assembly in the present invention is composed of two opposing longitudinal wedge blocks and two opposing transverse wedge blocks. Before lifting, a single person can rotate the pull rod to adjust the distance between the transverse wedge blocks, thereby changing the distance between the longitudinal wedge blocks, thereby adjusting the height and horizontality of the support rail. It not only saves manpower but also makes the adjustment process convenient, labor-saving and highly safe.

[0019] 3. The support system in the present invention is also equipped with an adjustable walkway bracket in conjunction with the support rod group for installing the walkway board. The walkway bracket is composed of an extended cross bar and an extended strut, and the end of the extended strut is hingedly connected to the middle of the extended cross bar through a position-adjustable movable support. After the angle between the upper chord and the lower chord changes, the extended cross bar can still be easily adjusted to a horizontal state.

[0020] 4. The guide plate in the present invention is provided with an inclined second guide surface, which can automatically guide the support rod group to between the two support rails when the support rod group is hoisted, and provide a limit for the support rod group when it is adjusted and moved along the support rails through the first guide surface to prevent it from slipping off the support rails, thereby reducing safety risks; the position of the guide plate can also be conveniently adjusted due to the setting of the second long hole.

[0021] 5. The top seat in the present invention is provided with a guide groove and a limit groove. The cross-section of the limit groove and the cross-section of the top block are square, so that the top block can be easily rotated 90 degrees in the limit groove and then installed again. The screw can be installed when the screw hole is in the same direction as the guide groove. When the direction of the screw hole is perpendicular to the guide groove, the side of the top block can abut against the end of the screw to play a limiting role, which is convenient for single-person operation. The installed top block and screw can be directly taken out of the limit groove and the guide groove as a whole, and the guide groove can also guide the end of the screw to limit, which can prevent the end of the screw from bending and deformation to a certain extent; the side of the screw is provided with a plurality of second through holes, and the force rod can be inserted when the screw is rotated, which is convenient for single-person operation to apply force. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall structural diagram of the bottom mold support system of the present invention.

[0023] Figure 2 is a structural diagram of the adjusting wedge assembly.

[0024] Figure 3 It is a structural diagram of the support rod group.

[0025] Figure 4 It is a structural diagram of the aisle bracket.

[0026] Figure 5 This is the structural diagram of the top seat.

[0027] Figure 6 It is a structural diagram of the top block.

[0028] Figure 7 It is a structural diagram of the guide plate.

[0029] Description of main reference numerals:

[0030] 100-support column, 110-ladder;

[0031] 200-support rail;

[0032] 300-adjusting wedge assembly, 310-longitudinal wedge, 311-mounting surface, 312-first inclined surface, 320-transverse wedge, 321-first through hole, 322-second inclined surface, 330-pull rod, 340-tightening nut, 350-locking nut;

[0033] 400-support rod group, 410-lower chord rod, 420-upper chord rod, 430-adjustment rod group, 431-bidirectional screw rod, 432-screw rod hinge joint, 440-cross connection, 450-second nail hole, 460-front support;

[0034] 500-walkway bracket, 510-extended crossbar, 520-extended support rod, 530-connecting plate, 540-first long hole, 550-movable support;

[0035] 600-guide plate, 610-first guide surface, 620-second guide surface, 630-second long hole;

[0036] 700-top seat, 701-guide groove, 702-limiting groove, 703-first nail hole, 710-top block, 711-screw hole, 720-screw rod, 721-second through hole, 730-stud, 740-guard plate, 741-bayonet. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0039] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0041] like Figures 1 to 7As shown, the bottom mold support system in this embodiment includes: a support column 100, a ladder 110, a support rail 200, an adjustment wedge block assembly 300, a longitudinal wedge block 310, a mounting surface 311, a first inclined surface 312, a transverse wedge block 320, a first through hole 321, a second inclined surface 322, a pull rod 330, a tightening nut 340, a locking nut 350, a support rod group 400, a lower chord rod 410, an upper chord rod 420, an adjustment rod group 430, a bidirectional screw rod 431, a screw rod hinge joint 432, and a cross link 440. , the second nail hole 450, the front support 460, the aisle bracket 500, the extended cross bar 510, the extended support rod 520, the connecting plate 530, the first long hole 540, the movable support 550, the guide plate 600, the first guide surface 610, the second guide surface 620, the second long hole 630, the top seat 700, the guide groove 701, the limiting groove 702, the first nail hole 703, the top block 710, the screw hole 711, the screw rod 720, the second through hole 721, the stud 730, the guard plate 740, and the bayonet 741.

[0042] There are two support rails 200 and they are arranged in parallel. A ladder 110 is arranged on the side of the support column 100. The support column 100 is installed below the support rail 200 and is perpendicular to the support rail 200. An adjusting wedge is installed between the support column 100 and the support rail 200. A plurality of support rod groups 400 are installed at intervals on two support rails 200; the support rod group 400 includes a lower chord rod 410 and an upper chord rod 420. Both ends of the lower chord rod 410 span across each support rail 200 and its bottom abuts against the top of the support rail 200. A front support 460 is installed at one end of the lower chord rod 410. The front support 460 is perpendicular to the lower chord rod 410 and its end extends upward. One end of the upper chord rod 420 is rotatably connected to the end of the front support 460. A plurality of adjusting rod groups 430 are connected between the upper chord rod 420 and the upper chord rod 420. The adjusting rod group 430 is composed of a bidirectional screw rod 431 and a screw rod hinge joint 432 installed at both ends of the bidirectional screw rod 431. The end of the bidirectional screw rod 431 is threadedly connected to one end of the screw rod hinge joint 432. The threads at both ends of the bidirectional screw rod 431 are rotated in opposite directions. The other end of the screw rod hinge joint 432 is rotatably connected to the upper chord rod 420 and the lower chord rod 410 respectively. When the bidirectional screw rod 431 is rotated, the connecting end of the adjusting rod group 430 can be extended and retracted to adjust the angle between the upper chord rod 420 and the lower chord rod 410. A walkway bracket 500 is connected between the other end of the upper chord rod 420 and the other end of the lower chord rod 410. The walkway bracket 500 includes an extension cross bar 510 and an extension support rod 5 20, one end of the extended cross bar 510 is rotatably connected to the other end of the upper chord rod 420, one end of the extended support rod 520 is rotatably connected to the other end of the lower chord rod 410, a connecting plate 530 is welded in the middle of the extended cross bar 510, a first long hole 540 is opened on the connecting plate 530, and the length direction of the first long hole 540 is consistent with the length direction of the extended cross bar 510, the walkway bracket 500 also includes a movable support 550, one end of the movable support 550 is fixedly connected to the long hole by a bolt, and the other end of the movable support 550 is rotatably connected to the other end of the extended support rod 520; a guide plate 600 is installed at the bottom of the lower chord rod 410, and a second long hole 630 is provided on the top of the guide plate 600, and the length direction of the second long hole 630 is consistent with the length direction of the lower chord rod 410 The length direction is consistent and can be fixedly connected to the bottom of the lower chord 410 by bolts. The bottom of the guide plate 600 extends downward and bends to form a first guide surface 610 and a second guide surface 620. The first guide surface 610 abuts against the side of the support rail 200, and the edge of the second guide surface 620 is connected to the edge of the first guide surface 610. The other end of the second guide surface 620 is inclined in the direction away from the side of the support rail 200; a detachable top seat 700 is also installed at both ends of the lower chord 410, and a detachable top block 710 is provided in the top seat 700. A screw rod 720 is installed in the top block 710. When the screw rod 720 rotates, its end can abut against the side of the adjacent top block 710, so that the adjacent support rod groups 400 are moved away from each other;A detachable cross link 440 is connected between each lower chord 410, thereby fixing each support rod group 400. ;

[0043] In more detail, the adjustment wedge block assembly 300 includes a longitudinal wedge block 310 and a transverse wedge block 320. The longitudinal wedge blocks 310 are two in number and are arranged vertically. The longitudinal wedge block 310 is provided with a mounting surface 311 and two first inclined surfaces 312 to form a structure with an obtuse triangle cross section. The mounting surface 311 is fixedly connected to the bottom of the support rail 200 and the top of the support column 100 respectively. The two first inclined surfaces 312 are symmetrically distributed about the midline of the longitudinal wedge block 310. The transverse wedge blocks 320 are two in number and are sandwiched between the two longitudinal wedge blocks 310. A first through hole 321 is provided at both ends of the transverse wedge block 320, and two second inclined surfaces 322 are symmetrically provided between the two ends of the transverse wedge block 320. The second inclined surfaces 322 abut against the first inclined surface 312. A pull rod 330 is also installed between the two transverse wedge blocks 320. Both ends of the pull rod 330 pass through the first through hole 321 and are installed with a tightening nut 340 and a locking nut 350. When the tightening nuts 340 at both ends of the pull rod 330 approach each other, the transverse wedge blocks 320 can approach each other, thereby making the two longitudinal wedge blocks 310 move away from each other.

[0044] In more detail, a first nail hole 703 is opened through the top and bottom of the top seat 700, and a second nail hole 450 is opened through the top and bottom of the support rail 200. The hole position of the second nail hole 450 is consistent with the hole position of the first nail hole 703. The stud 730 can pass through the first nail hole 703 and the second nail hole 450 at the same time and its two ends are locked by nuts.

[0045] In addition, a guide groove 701 is provided on the top of the top seat 700, and the two ends of the guide groove 701 pass through the two ends of the top seat 700. The directions indicated by the two ends of the guide groove 701 are consistent with the length direction of the support rail 200. A limiting groove 702 is also provided on the top of the top seat 700. The limiting groove 702 is located in the middle of the guide groove 701 and the width of the limiting groove 702 is greater than the width of the guide groove 701. The top block 710 can be installed in the limiting groove 702. The cross-section of the top block 710 and the cross-section of the limiting groove 702 are both square. Screw holes 711 are provided on both sides of the top block 710, and the screw holes 711 match the screw rod 720. The screw rod 720 can pass through the guide groove 701. A plurality of second through holes 721 are provided along the length direction of the screw rod 720, and the axis of the second through hole 721 intersects the axis of the screw rod 720 at right angles.

[0046] In addition, two guard plates 740 are installed on the top of the top seat 700. One end of the guard plate 740 is rotatably mounted on the stud 730. The side of the other end of the guard plate 740 is provided with a snap-in 741, which can be snapped onto the adjacent stud 730. The guard plate 740 can block partial areas on both sides of the limiting groove 702. The two ends of the guard plate 740 can be locked by the nuts at both ends of the stud 730 and can prevent the top block 710 from falling out of the limiting groove 702.

[0047] Next, a method for using a bottom mold support system in this embodiment is described in detail so that those skilled in the art can better understand the present invention:

[0048] When in use, first install the support column 100 and the support rail 200, adjust the height of the wedge block assembly 300 by adjusting the pull rod 330 to level the support rail 200, and then lock the support rail 200 and the adjusting wedge block assembly 300; hoist the support rod group 400 on the support rail 200 by a crane, at this time, the support rod group 400 can be introduced between the two support rails 200 through the second guide surface 620 on the guide plate 600, and the support rod group 400 is limited between the two support rails 200 through the first guide surface 610, and when hoisting the support rod group 400, a top block 710 is pre-installed in the limit groove 702, and the pre-installed direction of the top block 710 is that the axis of the screw hole 711 and the direction of the guide groove 701 are perpendicular to each other; then the worker adjusts the spacing between the support rod groups 400, when the worker When the lever 720 is in the locked state, the lever 720 is in the locked state, and the locking cam 710 is in the locked state, so that the lever 720 can be locked in the locked state.

[0049] To summarize, the support columns 100 and the support rails 200 of the bottom mold support system in this embodiment are connected by adjusting the wedge assembly 300, and the support rod group 400 is installed on the support rail 200, so that the height and level of the support rod group 400 can be easily adjusted, and top seats 700 are provided at both ends of the support rod group 400, and a top block 710 is installed in the top seat 700, and the top block 710 is threadedly connected to the screw rod 720. When the screw rod 720 rotates, the top block 710 on the adjacent support rod group 400 can be pushed, so that the distance between the adjacent support rod groups 400 can be quickly adjusted during installation, and a guide plate 600 is also provided under the support rod group 400, which can play a role of limiting and guiding when hoisting the support rail 200, so that the installation process has higher safety.

[0050] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention after reading this specification, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A bottom mold support system, comprising a support column and a support rail, wherein the number of the support rails is more than two and they are arranged parallel to each other, the top of the support column is fixedly connected to the support rail through an adjusting wedge assembly, and a plurality of support rod groups are arranged on the support rail, characterized in that: The support rod group comprises a lower chord rod and an upper chord rod, two ends of the lower chord rod span each of the support rails and its bottom abuts against the top of the support rail, one end of the upper chord rod is rotatably connected to one end of the lower chord rod, and a plurality of adjusting rod groups are connected between the lower chord rod and the upper chord rod, and the connecting end of the adjusting rod group can be telescopic so as to adjust the angle between the upper chord rod and the lower chord rod; a walkway bracket is connected between the other end of the upper chord rod and the other end of the lower chord rod; a guide plate is installed at the bottom of the lower chord rod, and the guide plate is provided with a first guide surface, and the first guide surface abuts against the side of the support rail, and a detachable top seat is also provided at the two ends of the lower chord rod, a detachable top block is provided in the top seat, and a screw rod is installed in the top block, and when the screw rod rotates, its end can abut against the side of the adjacent top block, so that the adjacent support rod groups are moved away from each other; a detachable cross connection is connected between each of the lower chord rods.

2. The bottom mold support system according to claim 1, characterized in that: The adjusting wedge block assembly includes a longitudinal wedge block and a transverse wedge block. There are two longitudinal wedge blocks. The longitudinal wedge blocks are provided with a mounting surface and two first inclined surfaces. The mounting surfaces are respectively fixedly connected to the bottom of the support rail and the top of the support column, and the two first inclined surfaces are symmetrically distributed about the center line of the longitudinal wedge block; there are two transverse wedge blocks and they are clamped between the two longitudinal wedge blocks. A first through hole is provided through both ends of the transverse wedge block, and two second inclined surfaces are symmetrically provided between the two ends of the transverse wedge block, and the second inclined surfaces are abutted against the first inclined surfaces. A pull rod is also installed between the two transverse wedge blocks, and the two ends of the pull rod pass through the first through hole and are installed with tightening nuts and locking nuts. When the tightening nuts at both ends of the pull rod are close to each other, the transverse wedge blocks can approach each other, thereby making the two longitudinal wedge blocks move away from each other.

3. The bottom mold support system according to claim 1, characterized in that: The walkway bracket includes an extended cross bar and an extended strut, one end of the extended cross bar is rotatably connected to the other end of the upper chord, one end of the extended strut is rotatably connected to the other end of the lower chord, and the other end of the extended strut is rotatably connected to the middle part of the extended cross bar.

4. The bottom mold support system according to claim 3, characterized in that: A connecting plate is welded at the middle part of the extended cross bar, and a first long hole is provided on the connecting plate. The length direction of the first long hole is consistent with the length direction of the extended cross bar. The walkway bracket also includes a movable support, one end of the movable support is fixedly connected to the long hole by a bolt, and the other end of the movable support is rotatably connected to the other end of the extended support rod.

5. The bottom mold support system according to claim 1, characterized in that: The guide plate is further provided with a second guide surface, an edge of the second guide surface is connected to an edge of the first guide surface, and the other end of the second guide surface is inclined in a direction away from the side of the support rail.

6. The bottom mold support system according to claim 5, characterized in that: A second long hole is provided on the top of the guide plate, and the length direction of the second long hole is consistent with the length direction of the lower chord.

7. The bottom mold support system according to claim 1, characterized in that: A guide groove is provided on the top of the top seat, and two ends of the guide groove pass through the two ends of the top seat, and the directions indicated by the two ends of the guide groove are consistent with the length direction of the support rail; a limiting groove is also provided on the top of the top seat, and the limiting groove is located in the middle of the guide groove and the width of the limiting groove is greater than the width of the guide groove, and the top block can be installed in the limiting groove, and the cross-section of the top block and the cross-section of the limiting groove are both square, and screw holes are provided on both sides of the top block, and the screw holes match the screw rod, and the screw rod can pass through the guide groove.

8. The bottom mold support system according to claim 7, characterized in that: A first nail hole is opened through the top and bottom of the top seat, and a second nail hole is opened through the top and bottom of the support rail, and the hole position of the second nail hole is consistent with the hole position of the first nail hole; it also includes a stud, which can pass through the first nail hole and the second nail hole at the same time and its two ends are locked by nuts.

9. The bottom mold support system according to claim 8, characterized in that: It also includes a guard plate, one end of which is rotatably mounted on the stud, and a slot is provided on the side of the other end of the guard plate, which can be clamped on the adjacent stud. The guard plate can cover a partial area of ​​the limiting groove.

10. The bottom mold support system according to claim 1, characterized in that: A plurality of second through holes are provided along the length direction of the screw rod, and the axes of the second through holes intersect the axis of the screw rod perpendicularly.

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