A highway pavement cement stabilized macadam construction structure

Abstract

This invention discloses a construction structure for cement-stabilized crushed stone pavement of highways, relating to the field of pavement construction. It includes a template and tie rods used in conjunction with the template. The template has a first through hole, and a turntable is rotatably mounted on the template. The turntable has a second through hole adapted to the first through hole. The turntable has a first position for the tie rod to pass through and a second position for fixing the tie rod. The construction structure for cement-stabilized crushed stone pavement of highways provided by this invention has the following advantages: First, when removing the template from the tie rod, simply rotate the turntable to align the first and second through holes, and the template can be directly removed. Second, after the turntable causes the second through hole to shift away from the first through hole, the turntable partially blocks the first through hole, meaning there is only a small annular gap between the first and second through holes, thereby reducing material leakage.

Description

Technical Field

[0001] This invention relates to the field of road construction, and more specifically to a cement-stabilized crushed stone construction structure for highway pavements. Background Technology

[0002] As is commonly known, cement-stabilized crushed stone layer, or simply water-stabilized layer, is laid at the bottom of asphalt as a subgrade during highway construction. It is used to improve the structure's resistance to water erosion, control moisture content, and ensure the stability of the foundation's bearing capacity. During the laying process, formwork is erected on both sides for shaping.

[0003] For example, the Chinese patent document with authorization announcement number CN219470606U, announcement date August 4, 2023, and titled "A Formwork Device for Water-Stable Layer Construction," includes a formwork body with perforations. A tie rod is inserted into the perforation, and the tie rod has a reinforcing ring and an anti-detachment support structure. The reinforcing ring is located at one end of the tie rod and is fixed to the subgrade or base surface by a reinforcing member. The anti-detachment support structure is located at the other end of the tie rod and is used to support the formwork body. This utility model effectively solves the problem that current water-stabilized formwork fixing and support require a large number of steel bars and bolts, which are cumbersome to assemble and disassemble, and require significant manpower and material resources.

[0004] The template is fixed using tie rods. The specific operation is as follows: first, one end of the tie rod is passed through the through hole already opened on the template, then the tie rod is rotated to offset the tie rod from the through hole, and the other end is fixed with nails. The shortcomings of the existing technology are: first, when removing the template, it is necessary to use a scraper to cut off the end of the tie rod outside the template before the template can be removed from the tie rod; second, the through hole is designed as a long strip hole structure to facilitate the passage of the tie rod, which makes it easy for the material of the water-stabilized layer to leak out from the through hole, thus causing material waste. Summary of the Invention

[0005] The purpose of this invention is to provide a cement-stabilized crushed stone construction structure for highway pavement to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A construction structure for cement-stabilized crushed stone pavement of highway includes a template and a tie rod used in conjunction with the template. The template has a first through hole and a turntable is rotatably mounted on the template. The turntable has a second through hole that matches the first through hole.

[0008] The turntable has a first position for the pull rod to pass through and a second position for fixing the pull rod.

[0009] The above-mentioned cement-stabilized crushed stone construction structure for highway pavement has arc-shaped grooves provided on the first through hole and the second through hole.

[0010] The aforementioned structure for cement-stabilized crushed stone construction on highway pavements includes a balance bar on the tie rod.

[0011] In the above-mentioned cement-stabilized crushed stone construction structure for highway pavement, the balance bar and the tie bar are on the same plane.

[0012] The above-mentioned construction structure for cement-stabilized crushed stone pavement of highways includes a support frame on the template and a fixing rod on the support frame.

[0013] The aforementioned cement-stabilized crushed stone construction structure for highway pavement further includes a transmission component slidably mounted on the template, a drive rod fixedly connected to the turntable, a drive groove provided on the transmission component, and the drive rod slidably connected to the drive groove; it also includes a power component for driving the transmission component to reciprocate.

[0014] The aforementioned structure for cement-stabilized crushed stone construction on highway pavements includes a support in a stowed state and an unfolded state.

[0015] The above-mentioned cement-stabilized crushed stone construction structure for highway pavement includes a power component comprising an abutment rod fixed to the support, a transmission component located on the travel stroke of the abutment rod, and a spring provided between the transmission component and the template.

[0016] The above-mentioned cement-stabilized crushed stone construction structure for highway pavement includes a connecting rod at one end of the template and a connecting groove adapted to the connecting rod at the other end. The connecting rod is fixedly connected to the transmission component. When the support is in the retracted state, the connecting rod is away from the connecting groove. When the support is in the extended state, the connecting rod is inserted into the connecting groove.

[0017] The aforementioned cement-stabilized crushed stone construction structure for highway pavement includes a limiting component on the transmission member for fixing the support.

[0018] In the above technical solution, the present invention provides a construction structure for cement-stabilized crushed stone on highway pavement. A turntable is rotatably mounted on the template, and a second through hole adapted to the first through hole is opened on the turntable. When installing the tie rod, the turntable is first placed in the first position, at which time the second through hole coincides with the first through hole. The end of the tie rod connected to the template can pass through both the first and second through holes simultaneously. Then, the turntable is rotated so that the second through hole is misaligned with the first through hole. At this time, the tie rod cannot be retracted from the second through hole, thereby fixing the template. The advantages of this setting are: firstly, when removing the template from the tie rod, it is only necessary to rotate the turntable so that the first through hole coincides with the second through hole, and the template can be removed directly; secondly, after the turntable causes the second through hole to be misaligned with the first through hole, the turntable partially blocks the first through hole, that is, there is only a small annular gap between the first and second through holes, thereby reducing material leakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Enlarged schematic diagram of a local structure at point A;

[0022] Figure 3 This is a schematic diagram of the overall structure from another perspective, provided for an embodiment of the present invention.

[0023] Figure 4 A partial cross-sectional view of the support structure provided in an embodiment of the present invention when it is in the deployed state;

[0024] Figure 5 This is a partial cross-sectional view of the support structure in the stowed state according to an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the overall structure of the pull rod provided in an embodiment of the present invention;

[0026] Figure 7 This is a partial structural diagram of the turntable in the first position according to an embodiment of the present invention;

[0027] Figure 8 This is a partial structural diagram of the turntable in the second position according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the overall structure of the transmission component provided in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the connection structure between the connecting rod and the connecting groove provided in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Template; 2. Tie rod; 3. First through hole; 4. Turntable; 5. Second through hole; 6. Arc-shaped groove; 7. Balance bar; 8. Bracket; 9. Fixing rod; 10. Drive rod; 11. Drive groove; 12. Rotating seat; 13. Rotating shaft; 14. Abutment rod; 15. Spring; 16. Clearance groove; 17. Slide groove; 18. Sliding joint; 19. Connecting rod; 20. Connecting groove; 21. Limiting part; 22. Transmission component. Detailed Implementation

[0032] 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.

[0033] In the description of this invention, it should be understood that, Figure 5 The position of the central abutment rod 14 relative to the transmission member 22 is left, and vice versa. The terms "center", "longitudinal", "lateral", "length", "width", "degree", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0034] Reference Figure 1-10 The present invention provides a construction structure for cement-stabilized crushed stone pavement of highway, including a template 1 and a tie rod 2 used in conjunction with the template 1. The template 1 is provided with a first through hole 3, and a turntable 4 is rotatably provided on the template 1. The turntable 4 is provided with a second through hole 5 adapted to the first through hole 3.

[0035] The turntable 4 has a first position for the pull rod 2 to pass through and a second position for fixing the pull rod 2.

[0036] Specifically, during highway construction, templates 1 need to be set up on both sides of the road. A paver performs water-stabilized layer paving operations in the middle of template 1. The cross-section of template 1 is preferably U-shaped, and a strip-shaped first through hole 3 is opened on the side wall of template 1. A tie rod 2 is used in conjunction with template 1. Two sets of crossbars are set at one end of the tie rod 2 connected to template 1. The length of the two sets of crossbars is less than the length of the first through hole 3 so that the crossbars can pass through the first through hole 3. A fixing ring is set at the other end of the tie rod 2. When fixing template 1, the crossbars at the end of the tie rod 2 are first inserted into the first through hole 3, and then the tie rod 2 is rotated so that template 1 is stuck between the two sets of crossbars. Then, a nail is passed through the fixing ring to fix the tie rod 2 and template 1 simultaneously. This is existing technology and will not be elaborated. One of the core innovations of this invention is that a turntable 4 is rotatably set on template 1, and a first through hole 3 adapted to the first through hole 3 is opened on the turntable 4. The turntable 4 and template 1 are provided with a convex ring or other limiting structure to prevent them from separating. The purpose of this setting is that when installing the pull rod 2, the turntable 4 is first placed in the first position, at which time the second through hole 5 and the first through hole 3 are completely overlapped. At this time, the crossbar and the pull rod 2 can pass through the first through hole 3 and the second through hole 5 at the same time. Then, the turntable 4 is rotated so that the second through hole 5 is misaligned with the first through hole 3. At this time, the pull rod 2 cannot be retracted from the second through hole 5, so as to fix the template 1. The advantages of this setting are: firstly, when removing the template 1 from the pull rod 2, it is only necessary to rotate the turntable 4 so that the first through hole 3 and the second through hole 5 are overlapped, and the template 1 can be removed directly; secondly, after the turntable 4 drives the second through hole 5 to be misaligned with the first through hole 3, the turntable 4 partially blocks the first through hole 3, that is, there is only a small annular gap between the first through hole 3 and the second through hole 5, which can reduce material leakage.

[0037] Preferably, arc-shaped grooves 6 are provided on the first through hole 3 and the second through hole 5. Specifically, two arc-shaped grooves 6 are provided on the first through hole 3 and the second through hole 5, and the arc-shaped grooves 6 are located in the middle of the first through hole 3 and the second through hole 5. The radial dimension of the pull rod 2 is larger than the radial dimension of the crossbar, and the radial dimension of the arc-shaped groove 6 is adapted to the radial dimension of the pull rod 2. The purpose of this arrangement is that when the pull rod 2 is installed, the pull rod 2 passes through the position of the arc-shaped groove 6, and correspondingly, the crossbar passes through the remaining part of the first through hole 3 and the second through hole 5. After the pull rod 2 and the crossbar pass through, the turntable 4 is rotated so that the first through hole 3 and the second through hole 5 are misaligned. At this time, under the action of the arc-shaped groove 6, the size of the gap between the pull rod 2 and the first through hole 3 and the second through hole 5 can be minimized.

[0038] Furthermore, a balance bar 7 is provided on the pull rod 2. The balance bar 7 is located at the end of the pull rod 2 near the fixing ring, and it is on the same plane as the fixing ring. That is, when the balance bar 7 contacts the construction area, the hole inside the fixing ring is perpendicular to the balance bar 7, and the balance bar 7 can flexibly fix the fixing ring in this state to facilitate the insertion of nails, and to prevent the pull rod 2 from rotating arbitrarily during installation.

[0039] Preferably, the balance bar 7 and the tie rod 2 are on the same plane. Specifically, the balance bar 7 is arranged parallel to the crossbar at the end of the tie rod 2, which reduces the space occupied by the tie rod 2 in the vertical direction, thus facilitating the storage and transportation of the tie rod 2.

[0040] Furthermore, a support 8 is provided on the template 1, and a fixing rod 9 is provided on the support 8. Specifically, the support 8 is approximately a triangular frame structure, and an annular portion is provided at the end of the support 8 away from the pivot 13. The radial dimension of the fixing rod 9 is adapted to the radial dimension of the internal space of the annular portion. The purpose of this arrangement is that when installing the template 1, the fixing rod 9 passes through the annular portion and is inserted into the construction area to fix the position of the template 1. When used in conjunction with the tie rod 2, it can improve the fixing effect of the template 1.

[0041] Furthermore, it also includes a transmission component 22 slidably disposed on the template 1, a drive rod 10 fixedly connected to the turntable 4, a drive groove 11 formed on the transmission component 22, and the drive rod 10 slidably connected to the drive groove 11; it also includes a power component for driving the transmission component 22 to reciprocate. Specifically, the transmission component 22 is arranged along the length of the template 1, the drive groove 11 is a strip-shaped groove, which is vertically arranged at one end of the transmission component 22 near the turntable 4, the drive rod 10 is eccentrically arranged on the surface of the turntable 4, and the transmission component 22 is provided with an empty area that avoids the pull rod 2 to prevent interference between the transmission component 22 and the pull rod 2. The power component can be an existing reciprocating drive component such as an electric push rod. The purpose of this arrangement is that when it is necessary to pass the pull rod 2 through the second through hole 5, the turntable 4 is in the first position, at which time the second through hole 5 is in the second position. The through hole 5 and the first through hole 3 are completely overlapped, and the transmission component 22 is at the leftmost end. After the pull rod 2 passes through the second through hole 5, the transmission component 22 is controlled to move to the right by the power component. At this time, under the transmission action of the drive groove 11 and the drive rod 10, the turntable 4 rotates clockwise. During this process, the drive rod 10 slides vertically along the drive groove 11 to adapt, thereby driving the turntable 4 to switch from the first position to the second position. At this time, the second through hole 5 and the first through hole 3 are offset, and the offset angle is preferably 90°.

[0042] Preferably, the support 8 has a retracted state and an unfolded state. Specifically, a rotating seat 12 is fixed to the inner wall of the template 1, and a rotating shaft 13 is provided on the support 8. The rotating shaft 13 is rotatably connected to the rotating seat 12, and the length of the rotating shaft 13 is adapted to the axial length inside the rotating seat 12, so that the support 8 will not sway arbitrarily in the vertical direction. When the support 8 rotates into the template 1, it is in the retracted state. When the support 8 rotates to be perpendicular to the template 1, it is in the unfolded state. The purpose of this arrangement is that during transportation, the support 8 is placed in the retracted state, which can reduce the area occupied by the template 1, thereby facilitating the storage and transportation of the template 1. When it is necessary to fix the template 1, the support 8 is rotated from the retracted state to the unfolded state. At this time, the support 8 and the template 1 can be fixed in the construction area by the fixing rod 9.

[0043] As an alternative to the above-mentioned electric push rod control transmission component 22 reciprocating movement, preferably, the power component includes an abutment rod 14 fixed to the bracket 8, the transmission component 22 is located on the movement stroke of the abutment rod 14, and a spring 15 is provided between the transmission component 22 and the template 1. Specifically, the abutment rod 14 is fixed to the outer circumferential surface of the rotating shaft 13. A clearance groove 16 is provided on the rotating seat 12, and the abutment rod 14 extends through the clearance groove 16. The end of the abutment rod 14 is hemispherical. The end of the transmission component 22 is located on the travel stroke of the abutment rod 14. A sliding groove 17 is provided on the transmission component 22. A sliding joint 18 is provided on the template 1, and the sliding joint 18 is slidably connected to the sliding groove 17. The spring 15 is located between the sliding joint 18 and the transmission component 22. This arrangement allows the pull rod 2 to pass through the second through hole 5 when the template 1 needs to be installed. Then, the bracket 8 is rotated to switch the bracket 8 from a retracted state to an extended state. During this process, the rotating shaft 13 and the abutment rod 14 will rotate, causing the abutment rod 14 to abut against the end of the transmission component 22, thereby causing the transmission component 22 to slide to the right and storing force on the spring 15. This causes the drive groove 11 to slide synchronously to the right. Under the action of the drive rod 10 sliding with the drive groove 11, the turntable 4 is driven to rotate passively (during this process, the bracket 8 can be fixed in the unfolded state by means of a pin or other structure), thereby fixing the position of the pull rod 2. When the template 1 is used up, the bracket 8 is rotated in the opposite direction so that the bracket 8 switches from the unfolded state to the retracted state. During this process, the abutment rod 14 and the transmission component 22 will gradually move away from each other. At this time, the elastic force of the spring 15 is released (when the second through hole 5 is blocked by solidified material, so that the elastic force of the spring 15 is insufficient to drive the transmission component 22 to move, the transmission component 22 can be driven to move horizontally by means of an auxiliary tool such as a hammer), thereby driving the transmission component 22 to slide in the opposite direction, thereby driving the turntable 4 to rotate in the opposite direction so that the second through hole 5 coincides with the first through hole 3, thus making it easier to remove the template 1.

[0044] Furthermore, one end of the template 1 is provided with a connecting rod 19, and the other end of the template 1 is provided with a connecting groove 20 adapted to the connecting rod 19. Specifically, the connecting rod 19 can be fixed to the template 1. A single template 1 is configured with two connecting rods 19 and one connecting groove 20. The two connecting rods 19 are arranged side by side, and the two ends of the connecting rods 19 are connected to the connecting groove 20, so that multiple templates 1 can be connected into a whole. On the one hand, this can improve the overall stability of the template 1, and on the other hand, it can facilitate keeping multiple templates 1 in a flush state.

[0045] It should be noted that since the connecting rod 19 is fixed to the template 1, when disassembling the template 1, it is necessary to remove the template 1 sequentially from the first end or the last end, which is not flexible in use. To solve the above problem, as an alternative to the above-mentioned connecting rod 19 being fixed to the template 1, preferably, the connecting rod 19 is fixed to the transmission component 22. When the bracket 8 is in the retracted state, the connecting rod 19 is far away from the connecting groove 20. When the bracket 8 is in the unfolded state, the connecting rod 19 is inserted into the connecting groove 20. Specifically, when template 1 is not fixed, bracket 8 is in the retracted state, and transmission component 22 is at the leftmost end. At this time, the second through hole 5 coincides with the first through hole 3 to facilitate the installation of pull rod 2. Then, adjacent templates 1 are aligned, and finally, bracket 8 is rotated to switch from the retracted state to the unfolded state. Under the action of abutment rod 14, transmission component 22 is driven to move to the right, and spring 15 is charged. When transmission component 22 moves to the right, it will drive turntable 4 to rotate passively under the action of drive groove 11 and drive rod 10, and simultaneously drive... The connecting rod 19 is passively inserted into the connecting groove 20. After the template 1 is used up, the bracket 8 is rotated in the opposite direction, thereby driving the turntable 4 to rotate in the opposite direction and reset, and simultaneously driving the connecting rod 19 to be pulled out of the connecting groove 20. The advantages of this setting are: firstly, the connecting rod 19 is passively moved during the rotation of the bracket 8, eliminating the step of pulling the connecting rod 19 out of the connecting groove 20, thus making it easier to remove the template 1 from the edge of the water-stabilized layer; secondly, when disassembling the template 1, it can be removed from any position, making it more flexible in use.

[0046] Furthermore, the transmission component 22 is provided with a limiting component for fixing the bracket 8. Specifically, the limiting component can be a pin-hole mating structure, which is used to fix the bracket 8 in a stowed state or an unfolded state to improve the stability of the bracket 8 in the first or second state.

[0047] Preferably, the limiting component includes a limiting part 21 disposed on the transmission member 22, and when the bracket 8 is in the unfolded state, the abutting rod 14 abuts against the limiting part 21. Specifically, the limiting part 21 is a notch structure set at the end of the transmission member 22. The side wall of the notch is the limiting part 21. The purpose of this setting is that when the bracket 8 rotates from the stored state to the unfolded state, the abutting rod 14 will abut against the transmission member 22, thereby driving the transmission member 22 to move to the right. When the abutting rod 14 continues to rotate to the notch position, the elastic force of the spring 15 will be partially released, thereby allowing the abutting rod 14 to be inserted into the notch (although during this process, the connecting rod 19 will slide in the reverse direction in the connecting groove 20, the sliding distance is not enough to allow the connecting rod 19 to be completely pulled out of the connecting groove 20, so as not to affect the connection effect between adjacent templates 1). Under the limiting effect of the limiting part 21 and the rotating seat 12, the bracket 8 cannot rotate in the reverse direction. Thus, the bracket 8 can be passively limited in the unfolded state by the transmission member 22. When the template 1 is used up, the bracket 8 can be switched to the stored state by pulling the transmission member 22 to the right and rotating the bracket 8 in the reverse direction.

[0048] Furthermore, when the support 8 is in the retracted state, the transmission member 22 abuts against the abutment rod 14. Specifically, when the transmission member 22 is at the leftmost end, the end of the transmission member 22 abuts against the outer peripheral surface of the abutment rod 14, thereby flexibly fixing the support 8 in the retracted state under the elastic force of the spring 15, so as to facilitate the storage and transportation of the template 1.

[0049] It should be noted that there can be two supports 8, which are arranged symmetrically. The aforementioned transmission components 22 and other structures are all set on the right support 8. That is, the left support 8 is an independent structure, which is only used to improve the stability of the template 1 during installation. It can be fixed in the stored state or the unfolded state by means of pins and pin holes.

[0050] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions 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 construction structure for highway pavement cement stabilized macadam, comprising a formwork and a tie rod used in cooperation with the formwork, characterized in that, The template has a first through hole, and a turntable is rotatably mounted on the template. The turntable has a second through hole that matches the first through hole. The turntable has a first position for the pull rod to pass through and a second position for fixing the pull rod. The template is provided with a support, and the support is provided with a fixing rod; It also includes a transmission component that is slidably disposed on the template, a drive rod that is fixedly connected to the turntable, a drive groove that is provided on the transmission component, and the drive rod that is slidably connected to the drive groove; It also includes a power assembly for driving the reciprocating movement of the transmission component; The bracket has a stowed state and an unfolded state; A rotating seat is fixed to the inner wall of the template, and a rotating shaft is provided on the support. The rotating shaft is rotatably connected to the rotating seat, and the length of the rotating shaft is matched with the axial length inside the rotating seat. The power assembly includes an abutment rod fixed to the bracket, a transmission member located on the travel stroke of the abutment rod, and a spring provided between the transmission member and the template.

2. The cement-stabilized crushed stone construction structure for highway pavement according to claim 1, characterized in that, Both the first through hole and the second through hole are provided with arc-shaped grooves.

3. The cement-stabilized crushed stone construction structure for highway pavement according to claim 1, characterized in that, A balance bar is installed on the tie rod.

4. The cement-stabilized crushed stone construction structure for highway pavement according to claim 3, characterized in that, The balance bar and the tie rod are on the same plane.

5. A cement-stabilized crushed stone construction structure for highway pavement according to claim 1, characterized in that, One end of the template is provided with a connecting rod, and the other end of the template is provided with a connecting groove adapted to the connecting rod. The connecting rod is fixedly connected to the transmission component. When the bracket is in the retracted state, the connecting rod is away from the connecting groove. When the bracket is in the unfolded state, the connecting rod is inserted into the connecting groove.

6. The cement-stabilized crushed stone construction structure for highway pavement according to claim 1, characterized in that, The transmission component is provided with a limiting component for fixing the bracket.

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