A slope adjustment device for precast T-beams in bridge engineering

Abstract

This invention discloses a slope adjustment device for precast T-beams in bridge engineering, comprising: a slope adjustment base plate with four adjusting seats evenly connected to its top; a slope adjustment top plate positioned above the base plate, with two receiving seats connected to its bottom sides; and a support plate installed within the receiving seats, its bottom end hinged to the tops of the two adjusting seats, with an angle indicator unit at the hinge point of the support plate for displaying the rotation angle of the top of the adjusting seats. This invention transforms the point support of the adjusting seats on the slope adjustment top plate into surface support. The support plate provides stable support for the slope adjustment top plate, improving the uniformity of force distribution on the plate. The angle indicator unit at the hinge point of the adjusting seats allows for direct measurement of the angle adjustment amount of each adjusting seat, ensuring consistent and accurate adjustment, reducing adjustment difficulty, and preventing stress on the slope adjustment top plate during installation due to differences in adjustment amounts, thus maintaining the stability of the slope adjustment top plate.

Description

Technical Field

[0001] This invention relates to the field of precast T-beam technology, and more specifically, to a longitudinal slope adjustment device for precast T-beams in bridge engineering. Background Technology

[0002] Precast T-beams are frequently used components in bridge construction. In mountainous highway construction, the terrain restricts the movement, resulting in significant variations in longitudinal slope and curve radius, which greatly impacts the longitudinal and transverse slopes of the T-beams. The embedded steel plates at the bottom of the bridge beams are required to have a slope consistent with the bridge's design longitudinal slope. In actual construction, T-beam slope adjusters are often used to ensure the embedded steel plates' slope matches the bridge's design slope, guaranteeing that the supports are level after beam installation. Inaccurate embedded steel plate slopes will cause uneven pressure on the supports after beam installation.

[0003] In the prior art, publication number CN217123508U discloses a longitudinal slope adjustment device for precast T-beams in bridge engineering, including a base plate and a slope adjustment support plate. The slope adjustment support plate has a slope adjustment rotating plate at its bottom, and fixed plates are located on the front and rear sides of the slope adjustment rotating plate at the top of the base plate. The slope adjustment rotating plate is rotatably installed between the two fixed plates via a rotating shaft. Insertion cylinders are fixed at the four corners of the top of the base plate, and adjusting screws are inserted into the insertion cylinders. Adjusting nuts are screwed onto the adjusting screws, and the adjusting nuts are mounted on the top of the insertion cylinders. A surface support adjustment device is located at the top of the adjusting screws. This invention utilizes a surface support adjustment device to form a more stable surface support for the slope adjustment support plate, ensuring stability, reliability, and a high safety factor. It also allows for convenient adjustment of the slope adjustment support plate's angle, improving the installation accuracy and stability of the longitudinal slope of the pre-embedded steel plate in the T-beam. However, the spline rod needs to be disassembled during the adjustment process, and the height of the four corner adjustment screws needs to be adjusted separately. It is impossible to ensure that the adjustment amount is consistent, and the spline rod cannot be accurately reinserted into the U-shaped bracket, making the adjustment difficult.

[0004] Therefore, it is necessary to propose a longitudinal slope adjustment device for precast T-beams in bridge engineering to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides a longitudinal slope adjustment device for precast T-beams in bridge engineering, comprising:

[0007] The slope adjustment base plate has four adjustment seats evenly connected to its top.

[0008] The slope adjustment top plate is set above the slope adjustment bottom plate, and two receiving seats are connected to the bottom two sides of the slope adjustment top plate;

[0009] A support plate is installed inside the receiving seat. The bottom end of the support plate is hinged to the top of the two adjusting seats. An angle indicator unit for displaying the rotation angle of the top of the adjusting seats is provided at the hinge point of the support plate.

[0010] Preferably, the precast T-beam longitudinal slope adjustment device for bridge engineering further includes: a hinged seat and a rotating plate, the hinged seat being connected to the top center of the slope adjustment base plate, the rotating plate being connected to the bottom center of the slope adjustment top plate, and the rotating plate being rotatably connected to the hinged seat.

[0011] Preferably, the adjusting seat includes: an adjusting cylinder, a screw, and adjusting paddles. The adjusting cylinder is rotatably connected to the top of the slope adjusting base plate. The screw is screwed into the adjusting cylinder and the top of the screw is hinged to the support plate. Multiple adjusting paddles are evenly connected to the outer wall of the adjusting cylinder along the circumferential direction.

[0012] Preferably, a connecting rod is connected to the bottom end of the support plate, and a bracket is connected to the top end of the screw of the adjusting seat. The bracket is U-shaped, and the connecting rod is rotatably connected to the bracket through a rotating shaft.

[0013] Preferably, the angle indicating unit includes:

[0014] A central hole is formed at the center of the rotating shaft, and a corresponding through hole is formed on the bracket;

[0015] The connecting part is connected to the center of the rotating shaft, and both ends are provided through holes;

[0016] The first and second snap-fit ​​parts are respectively connected to the outer and inner ends of the connecting part. The first snap-fit ​​part is wedge-shaped and snaps onto the bracket on the outside of the through hole, while the second snap-fit ​​part is snapped onto the bracket on the inside of the through hole.

[0017] The arc-shaped groove is formed on the support and is concentrically positioned below the through hole;

[0018] The indicator rod is slidably connected within the arc-shaped groove and connected to the second snap-fit ​​part;

[0019] The arc-shaped scale plate and indicator line are connected to the bracket and are concentrically set with the arc-shaped groove. The indicator line is engraved on the outer end of the indicator rod.

[0020] Preferably, the angle indicating unit further includes:

[0021] The bent portion is connected to the inner side of the snap-fit ​​portion 2;

[0022] A recessed portion is connected to the center of the bent portion and recessed towards the connecting portion; a positioning hole is provided in the center of the recessed portion.

[0023] The chuck is attached to the side of the recess away from the connecting part.

[0024] Preferably, a reinforcing rod is connected between the recesses of the two angle indicating units on the same side. The reinforcing rod is provided with a threaded hole and a positioning hole. The bolt passes through the positioning hole and connects with the threaded hole, and the claw engages in the positioning hole.

[0025] Preferably, a limit unit is provided inside the indicator rod, the limit unit including:

[0026] The limiting cavity is located inside the indicator rod;

[0027] Core rod one is connected to the center of the limiting cavity and arranged near the outside of the indicator rod. The outer wall of core rod one is provided with threads.

[0028] Core rod 2 is connected to the center of the limiting cavity and arranged near the inside of the indicator rod. Core rod 2 passes through the end of core rod 1 and is connected to the baffle on the inner wall of core rod 1.

[0029] Push plate, the push plate is screwed to one side of the core rod, and the push plate has a through hole;

[0030] A drive plate is located on the outside of the indicator rod. A slide rod is connected to the drive plate. The slide rod passes through the indicator rod and extends into the socket. The indicator rod has an arc-shaped slot for the slide rod to move.

[0031] Preferably, the limiting unit further includes:

[0032] The end is T-shaped and is slidably set inside the first core rod. The second core rod is slidably connected to the center hole of the end.

[0033] A limiting rod is hinged to the edge of the end. A sliding groove is provided in the inner length direction of the limiting rod, and a slider is slidably arranged in the sliding groove. A slot is provided on the indicator rod for the limiting rod to move, and a locking tooth is provided on the inner wall of the arc-shaped groove.

[0034] The rocker arm has its two ends hinged to the push plate and the slider, respectively.

[0035] Preferably, the limiting unit further includes:

[0036] Piston plate, which is slidably connected to the inner wall of core rod 1, is connected to drive plate through piston rod 1, and a spring is connected between piston plate and the end of inner wall of core rod 1.

[0037] A connecting hole is provided on the baffle to connect the two sides of a cavity of the core rod.

[0038] An annular cavity is concentrically formed at one inner end of the core rod.

[0039] An annular piston plate is slidably connected within an annular cavity, and is connected to the end via piston rod two.

[0040] Compared with the prior art, the present invention has at least the following beneficial effects:

[0041] This invention provides a longitudinal slope adjustment device for precast T-beams in bridge engineering. A support plate is installed on the top plate of the slope adjustment device, which transforms the point support of the adjustment seat on the top plate of the slope adjustment device into surface support. The support plate provides stable support for the top plate of the slope adjustment device, improves the uniformity of stress on the top plate of the slope adjustment device, and sets an angle indicator unit at the hinge point of the adjustment seat to obtain the angle adjustment amount of each adjustment seat more intuitively, ensuring that the adjustment amount of each adjustment seat is consistent and adjusted in place, reducing the difficulty of adjustment, avoiding stress generated on the top plate of the slope adjustment device during installation due to differences in adjustment amount, and maintaining the stability of the top plate of the slope adjustment device.

[0042] The present invention relates to a longitudinal slope adjustment device for precast T-beams in bridge engineering. Other advantages, objectives and features of the present invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the invention. Attached Figure Description

[0043] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0044] Figure 1 This is a schematic diagram of the longitudinal slope adjustment device for precast T-beams in bridge engineering according to the present invention.

[0045] Figure 2 This is a schematic diagram of the structure of a precast T-beam longitudinal slope adjustment device for bridge engineering after angle adjustment according to the present invention;

[0046] Figure 3 This is a schematic diagram of the adjusting seat in a precast T-beam longitudinal slope adjusting device for bridge engineering according to the present invention.

[0047] Figure 4 This is a schematic cross-sectional view of the support structure in a precast T-beam longitudinal slope adjustment device for bridge engineering according to the present invention.

[0048] Figure 5 This is a schematic diagram of the angle indicating unit in a precast T-beam longitudinal slope adjustment device for bridge engineering according to the present invention.

[0049] Figure 6 This is a schematic diagram of the lateral structure of the angle indicator unit in the longitudinal slope adjustment device for precast T-beams in bridge engineering according to the present invention.

[0050] Figure 7This is a schematic cross-sectional view of the indicator rod in a precast T-beam longitudinal slope adjustment device for bridge engineering according to the present invention.

[0051] Figure 8 This invention relates to a longitudinal slope adjustment device for precast T-beams in bridge engineering. Figure 7 A magnified view of the structure at point A in the middle;

[0052] Figure 9 This invention relates to a longitudinal slope adjustment device for precast T-beams in bridge engineering. Figure 7 A magnified schematic diagram of the structure at point B in the middle;

[0053] Figure 10 This invention relates to a longitudinal slope adjustment device for precast T-beams in bridge engineering. Figure 7 A magnified schematic diagram of the structure at point C.

[0054] In the diagram: 1. Slope adjustment base plate; 2. Slope adjustment top plate; 3. Adjustment seat; 4. Receiving seat; 5. Support plate; 6. Hinge seat; 7. Rotating plate; 8. Connecting rod; 9. Bracket; 10. Rotating shaft; 31. Adjustment cylinder; 32. Screw; 33. Adjustment lever; 41. Center hole; 42. Through hole; 43. Connecting part; 44. Snap-fit ​​part one; 45. Snap-fit ​​part two; 46. Arc groove; 47. Indicator rod; 48. Bending part; 49. Recessed part; 50. Fixed 51. Positioning hole; 62. Claw; 63. Limiting cavity; 64. Core rod one; 65. Core rod two; 66. Push plate; 67. Insertion hole; 68. Drive plate; 69. Slide rod; 70. Arc-shaped slot; 71. End; 72. Limiting rod; 73. Slide groove; 74. Slot; 75. Baffle; 76. Piston plate; 77. Connecting hole; 78. Annular cavity; 79. Annular piston plate; 80. Piston rod two; 81. Piston rod one. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0056] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof. Example

[0057] like Figure 1-2 As shown, the present invention provides a longitudinal slope adjustment device for precast T-beams in bridge engineering, comprising:

[0058] The slope adjustment base plate 1 has four adjusting seats 3 evenly connected to its top.

[0059] Slope adjustment top plate 2 is set above slope adjustment bottom plate 1, and two receiving seats 4 are connected to the bottom two sides of slope adjustment top plate 2;

[0060] Support plate 5 is installed inside the receiving seat 4. The bottom end of support plate 5 is simultaneously hinged to the top ends of the two adjusting seats 3. An angle indicator unit for displaying the rotation angle of the top end of the adjusting seat 3 is provided at the hinge point of support plate 5.

[0061] The aforementioned longitudinal slope adjustment device for precast T-beams in bridge engineering further includes: a hinged seat 6 and a rotating plate 7. The hinged seat 6 is connected to the top center of the slope adjustment base plate 1, and the rotating plate 7 is connected to the bottom center of the slope adjustment top plate 2. The rotating plate 7 is rotatably connected to the hinged seat 6. The working principle and beneficial effects of the above technical solution are as follows:

[0062] In a bridge engineering precast T-beam longitudinal slope adjustment device, during slope adjustment operation, the height of four adjustment seats 3 are adjusted respectively, so that the tops of the two adjustment seats 3 on one side are relatively raised and the tops of the two adjustment seats 3 on the other side are relatively lowered. When the slope adjustment top plate 2 rotates, it rotates around the hinge point of the rotating plate 7 and the hinge seat 6. The top of the adjustment seat 3 rotates relative to the support plate 5, thereby realizing the adjustment of the angle of the slope adjustment top plate 2. When the four adjustment seats 3 are adjusted, the angle indicator unit can display the rotation angle of the top of the adjustment seat 3 in real time. The rotation angle values ​​of the four adjustment seats 3 are adjusted to be equal, and this value is the rotation angle of the slope adjustment top plate 2.

[0063] This invention provides a longitudinal slope adjustment device for precast T-beams in bridge engineering. A support plate 5 is set on the slope adjustment top plate 2, which transforms the point support of the adjustment seat 3 on the slope adjustment top plate 2 into surface support. The support plate 5 provides stable support for the slope adjustment top plate 2, improves the uniformity of force on the slope adjustment top plate 2, and sets an angle indicator unit at the hinge point of the adjustment seat 3 to more intuitively obtain the angle adjustment amount of each adjustment seat 3, ensuring that the adjustment amount of each adjustment seat 3 is consistent and adjusted in place, reducing the difficulty of adjustment, avoiding stress generated in the slope adjustment top plate 2 during installation due to differences in adjustment amount, and maintaining the stability of the slope adjustment top plate 2.

[0064] like Figure 3 As shown, in one embodiment, the adjusting seat 3 includes: an adjusting cylinder 31, a screw 32 and adjusting paddles 33. The adjusting cylinder 31 is rotatably connected to the top of the slope adjusting base plate 1. The screw 32 is screwed into the adjusting cylinder 31 and the top of the screw 32 is hinged to the support plate 5. A plurality of adjusting paddles 33 are evenly connected to the outer wall of the adjusting cylinder 31 along the circumferential direction.

[0065] The working principle and beneficial effects of the above technical solution are as follows:

[0066] The adjusting seat 3 is used to adjust the height of both sides of the slope-adjusting top plate 2. The adjusting paddle 33 is connected to the adjusting cylinder 31. The adjusting paddle 33 is arranged vertically. By moving the adjusting paddle 33, the adjusting cylinder 31 can be rotated quickly. At the same time as the adjusting cylinder 31 rotates, the adjusting cylinder 31 drives the screw 32 to move up and down through the screw drive, so that the height of the top of the screw 32 moves up and down, thereby realizing the function of adjusting the height of both sides of the slope-adjusting top plate 2.

[0067] like Figure 1-2 As shown, in one embodiment, the bottom end of the support plate 5 is connected to the connecting rod 8, and the top end of the screw 32 of the adjusting seat 3 is connected to the bracket 9. The bracket 9 is U-shaped, and the connecting rod 8 is rotatably connected to the bracket 9 through the rotating shaft 10.

[0068] The working principle and beneficial effects of the above technical solution are as follows:

[0069] The connecting rod 8 at the bottom of the support plate 5 forms a hinge structure with the bracket 9 through the rotating shaft 10, so that the connecting rod 8 can rotate relative to the bracket 9 during the height adjustment of the adjusting seat 3, so as to adapt to the angle change of the slope top plate 2; the bracket 9 is set as a U-shaped rotating shaft mounting groove, and the rotating shaft 10 is set in the rotating shaft mounting groove, so that it can rotate without falling off the bracket 9.

[0070] like Figure 4-6 As shown, in one embodiment, the angle indicating unit includes:

[0071] A central hole 41 is formed through the center of the rotating shaft 10, and a through hole 42 corresponding to the central hole 41 is formed on the bracket 9.

[0072] The connecting part 43 is connected to the center of the rotating shaft 10, and both ends are provided to pass through the through holes 42;

[0073] The first snap-fit ​​part 44 and the second snap-fit ​​part 45 are respectively connected to the outer end and the inner end of the connecting part 43. The first snap-fit ​​part 44 is wedge-shaped and snaps onto the bracket 9 on the outer side of the through hole 42. The second snap-fit ​​part 45 is snapped onto the bracket 9 on the inner side of the through hole 42.

[0074] Arc-shaped groove 46 is formed on the bracket 9 and is concentrically arranged below the through hole 42;

[0075] Indicator rod 47 is slidably connected in the arc groove 46 and connected to the second snap-fit ​​part 45;

[0076] The arc-shaped scale plate and indicator line are connected to the bracket 9 and are concentrically set with the arc-shaped groove 46. The indicator line is engraved on the outer end of the indicator rod 47.

[0077] The working principle and beneficial effects of the above technical solution are as follows:

[0078] Existing precast T-beam slope adjustment devices do not have an angle adjustment indication function, or only have an angle indication component at the hinge seat 6. This method cannot determine whether all four adjustment seats 3 are adjusted to the correct position. When the angle indication unit is in use, the rotating shaft 10 is made hollow, and the connecting part 43 is connected to the center of the rotating shaft 10 to form an integrated structure. The first snap-fit ​​part 44 and the second snap-fit ​​part 45 are respectively set at both ends of the connecting part 43, and the first snap-fit ​​part 44 and the second snap-fit ​​part 24 are respectively snapped to both sides of the bracket 9 to limit the axial direction of the rotating shaft 10, so that the rotating shaft 10 does not shift when rotating and under load. When the rotating shaft 10 rotates, it drives the connecting part 43 and the first snap-fit ​​part 44 and the second snap-fit ​​part 45 on both sides to rotate synchronously. The second snap-fit ​​part 45 drives the indicator rod 47 to slide along the inner wall of the arc groove 46. The indicator line at the end of the indicator rod 47 is directly opposite the arc scale plate. The angle change value of the indicator line on the arc scale plate is the top rotation angle of the adjustment seat 3.

[0079] Through the above structural design, the top angle of the adjustment seat 3 is effectively displayed, and it is more intuitive to determine whether each adjustment seat 3 is adjusted in place. The locking parts at both ends of the rotating shaft 10 are set to limit the movement, ensuring that the rotating shaft 10 is located in the center of the bracket 9. When the slope adjustment plate 2 is subjected to load and unevenness, the rotating shaft 10 will not shift along the axial direction, thus improving the stability of the device.

[0080] like Figure 4 , 5 As shown, in one embodiment, the angle indicating unit further includes:

[0081] The bent portion 48 is connected to the inside of the snap-fit ​​portion 45;

[0082] The recessed portion 49 is connected to the center of the bent portion 48 and recessed towards the connecting portion 43. A positioning hole 50 is provided in the center of the recessed portion 49.

[0083] The pawl 51 is connected to the side of the recess 49 away from the connecting part 43.

[0084] In one embodiment, a reinforcing rod is connected between the recesses 49 of the two angle indicating units on the same side. The reinforcing rod is provided with a threaded hole and a positioning hole. A bolt passes through the positioning hole 50 and connects to the threaded hole, and a claw 51 is engaged in the positioning hole.

[0085] The working principle and beneficial effects of the above technical solution are as follows:

[0086] A bent portion 48 is connected to the snap-fit ​​part 45 of the angle indicating unit. The bent portion 48 reinforces the inner side of the connecting part 43 by spiraling, thereby improving the load-bearing capacity of the connecting part 43. A recessed portion 49 is provided at the center of the bent portion 48, which is recessed towards the connecting part 43 to form a mounting groove. The reinforcing rod is installed between the recessed portions 49 of the two angle indicating units on the same side. The pawl 51 is aligned with the positioning pawl hole on the reinforcing rod to limit the reinforcing rod. Then, the bolt is inserted into the center of the rotating shaft 10 through the through hole 42. The bolt passes through the positioning hole 50 and is screwed into the threaded hole, thereby stably connecting the reinforcing rod.

[0087] Through the above structural design, when the load-bearing capacity is large, the two recesses 49 on the same side are connected by the reinforcing rod, and the two rotating shafts 10 on the same side are connected, which improves the stiffness of the slope adjustment plate 2 along the direction of the reinforcing rod, and the stability and load-bearing capacity of the device are higher.

[0088] like Figure 7-10 As shown, in one embodiment, a limiting unit is provided within the indicator rod 47, the limiting unit comprising:

[0089] Limiting cavity 61 is formed inside indicator rod 47;

[0090] Core rod 62 is connected to the center of the limiting cavity 61 and arranged near the outside of the indicator rod 47. The outer wall of core rod 62 is provided with threads.

[0091] Core rod 2 63 is connected to the center of the limiting cavity 61 and arranged close to the inside of the indicator rod 47. Core rod 2 63 passes through the end of core rod 1 62 and is connected to the baffle 75 on the inner wall of core rod 1 62.

[0092] Push plate 64 is screwed to the outside of core rod 62, and push plate 64 has a through hole 65;

[0093] A drive plate 66 is located outside the indicator rod 47. A slide rod 67 is connected to the drive plate 66. The slide rod 67 passes through the indicator rod 47 and extends into the insertion hole 65. An arc-shaped slot 68 is provided on the indicator rod 47 for the slide rod 67 to move.

[0094] End 69 is T-shaped and is slidably disposed on the inner end of core rod 1 62. Core rod 2 63 is slidably connected to the center hole of end 69.

[0095] The limiting rod 70 is hinged to the edge of the end 69. A sliding groove 71 is provided in the inner length direction of the limiting rod 70. A slider 72 is slidably arranged in the sliding groove 71. A slot 74 for the limiting rod 70 to move is provided on the indicator rod 47. A retaining tooth is provided on the inner wall of the arc groove 46.

[0096] The rocker arm 73 is hinged at both ends to the push plate 64 and the slider 72, respectively.

[0097] The working principle and beneficial effects of the above technical solution are as follows:

[0098] When the limiting unit is in use, in the initial state, the slide rod 67 of the drive plate 66 is engaged in the insertion hole 65 of the push plate 64. The insertion hole 65 and the slide rod 67 are respectively equipped with a locking block and a locking groove, so that the slide rod 67 is engaged with the insertion hole 65 and can slide along the length direction of the slide rod 67. When the slope adjustment plate 2 is adjusted to the position, the drive plate 66 is rotated. The drive plate 66 drives the push plate 64 to rotate synchronously through the slide rod 67. The slide rod 67 is screwed to the outer wall of the core rod 62, so that the push plate 64 moves towards the end 69. The push plate 64 presses the swing rod 73 to rotate outward of the core rod 62, and drives the slider 72 to slide in the sliding groove 71 in the limiting rod 70, so that the limiting rod 70 unfolds outward. The limiting rod 70 engages with the locking teeth on the inner wall of the arc groove 46, limiting and locking the indicator rod 47, thereby limiting the rotating shaft 10 and the slope adjustment plate 2. When it is necessary to release the limit, simply rotate the drive plate 66 in the opposite direction to retract the limit rod 70.

[0099] Through the above structural design, in addition to indicating the angle, the indicator rod 47 can also serve as a limiting element connected to the rotating shaft 10. After the slope adjustment plate 2 is adjusted to the correct position, the drive plate 66 of the rotating limiting unit locks the indicator rod 47, thereby limiting and locking the rotating shaft 10 and the slope adjustment plate 2, and keeping the slope adjustment plate 2 stable. By converting the limiting of the rotating shaft 10 into the limiting of the indicator rod 47, a transmission link is added. Compared with the limiting component directly limiting the rotating shaft 10, the possibility of the limiting component breaking is reduced.

[0100] like Figure 7-10 As shown, in one embodiment, the limiting unit further includes:

[0101] Piston plate 76 is slidably connected to the inner wall of core rod 62. Piston plate 76 is connected to drive plate 66 through piston rod 81. A spring is connected between piston plate 76 and the end of inner wall of core rod 62.

[0102] A connecting hole 77 is provided on the baffle 75 to connect the two sides of the cavity of the core rod 62.

[0103] An annular cavity 78 is concentrically formed at the inner end of the core rod 62.

[0104] An annular piston plate 79 is slidably connected within an annular cavity 78, and the annular piston plate 79 is connected to the end 69 via piston rod 80.

[0105] The working principle and beneficial effects of the above technical solution are as follows:

[0106] When the limiting unit is in use, as the push plate 64 moves towards the end 69, the limiting rod 70 unfolds and simultaneously pushes the end 69 to slide along the second core rod 63. The end 69 drives the annular piston plate 79 to slide within the annular cavity 78 via the second piston rod 80. When the limiting rod 70 engages with the inner wall of the arc groove 46, the drive plate 66 can no longer rotate. At this time, pressing the drive plate 66 into the indicator rod 47 causes the drive plate 66 to slide along the inner wall of the first core rod 62 via the first piston rod 81. This stretches the spring, and the piston plate 76 pushes the air inside the first core rod 62, which then enters the other side of the first core rod 62 through the connecting hole 77 on the baffle 75. Sealing rings are provided between the end 69 and both the first and second core rods 62 and 63, ensuring that the end 69 seals the first core rod 62 tightly. The inner wall of the core rod 62 is provided with a one-way vent hole, through which air flows out. Then, the pressure on the drive plate 66 is released, and the piston plate 76 is reset under the elastic force of the spring. The drive plate 66 is also reset at the same time. When the piston plate 76 moves, it increases the space in the cavity of the core rod 62, generating negative pressure. Under the action of negative pressure, the end 69 tends to move into the core rod 62. Therefore, the end 69 drives the limiting rod 70 to maintain an outward expansion tendency, making the locking of the limiting rod 70 with the arc groove 46 more stable.

[0107] When the limit rod 70 rotates, the end 69 rotates accordingly. The end 69 drives the annular piston plate 79 to rotate in the annular cavity 78 through the piston rod 80. When the end 69 moves into the core rod 62, it drives the annular piston plate 79 to slide in the annular cavity 78. The arrangement of the annular cavity 78 and the annular piston plate 79 ensures the stable movement of the end 60.

[0108] Through the above structural design, after the limit is completed, pressing the drive plate 66 ensures that the limit rod 70 can be in the unfolded state through the negative pressure, avoiding displacement and failure of the limit function caused by the slippage of the threads on the core rod 62 and the push plate 64. As an auxiliary limit measure, it further improves the stability of the device after the limit is completed. The structure is simple and easy to operate.

[0109] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 limitations on this invention.

[0110] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0111] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A device for adjusting longitudinal slope of a prefabricated T-beam in bridge engineering, characterized in that, include: The slope adjustment base plate (1) has four adjustment seats (3) evenly connected to its top. The slope adjustment top plate (2) is set above the slope adjustment bottom plate (1), and two receiving seats (4) are connected to the bottom sides of the slope adjustment top plate (2). The support plate (5) is installed in the receiving seat (4). The bottom end of the support plate (5) is simultaneously hinged to the top ends of the two adjusting seats (3). An angle indicator unit for displaying the rotation angle of the top end of the adjusting seat (3) is provided at the hinge point of the support plate (5). The adjusting seat (3) includes: an adjusting cylinder (31) and a screw (32). The adjusting cylinder (31) is rotatably connected to the top of the slope adjusting base plate (1). The screw (32) is screwed into the adjusting cylinder (31) and the top of the screw is connected to a bracket (9). The bottom of the support plate (5) is connected to a connecting rod (8). The connecting rod (8) is rotatably connected to the bracket (9) through a rotating shaft (10). The angle indicating unit includes: A central hole (41) is opened through the center of the rotating shaft (10), and a through hole (42) corresponding to the central hole (41) is opened on the bracket (9). The connecting part (43) is connected to the center of the rotating shaft (10), and both ends are provided through the through holes (42); The first snap-fit ​​part (44) and the second snap-fit ​​part (45) are respectively connected to the outer end and the inner end of the connecting part (43). The first snap-fit ​​part (44) is wedge-shaped and snaps onto the bracket (9) on the outside of the through hole (42). The second snap-fit ​​part (45) snaps onto the bracket (9) on the inside of the through hole (42). An arc-shaped groove (46) is formed on the bracket (9) and is concentrically positioned below the through hole (42); The indicator rod (47) is slidably connected in the arc groove (46) and connected to the second snap-fit ​​part (45); A limit unit is provided inside the indicator rod (47), the limit unit including: The limiting cavity (61) is located inside the indicator rod (47); Core rod 1 (62) is connected to the center of the limiting cavity (61) and arranged near the outside of the indicator rod (47). The outer wall of core rod 1 (62) is provided with threads. Push plate (64) is screwed to the outside of core rod (62), and a through hole (65) is provided on push plate (64). A drive plate (66) is located outside the indicator rod (47). A slide rod (67) is connected to the drive plate (66). The slide rod (67) passes through the indicator rod (47) and extends into the socket (65). An arc-shaped slot (68) is provided on the indicator rod (47) for the slide rod (67) to move. End (69) is slidably set on the inner end of core rod (62); The limiting rod (70) is hinged to the edge of the end (69). A sliding groove (71) is provided in the limiting rod (70) along the length direction. A slider (72) is slidably provided in the sliding groove (71). A slot (74) for the limiting rod (70) to move is provided on the indicator rod (47). A locking tooth is provided on the inner wall of the arc groove (46). The rocker arm (73) is hinged at both ends to the push plate (64) and the slider (72).

2. The longitudinal slope adjusting device for precast T-beam of bridge engineering according to claim 1, characterized in that, Also includes: The hinge seat (6) and the rotating plate (7) are connected to the top center of the slope adjustment base plate (1) and the rotating plate (7) is connected to the bottom center of the slope adjustment top plate (2). The rotating plate (7) and the hinge seat (6) are rotatably connected.

3. The longitudinal slope adjusting device for precast T-beam in bridge engineering according to claim 1, characterized in that, The adjustment seat (3) also includes adjustment paddles (33), and multiple adjustment paddles (33) are evenly connected to the outer wall of the adjustment cylinder (31) along the circumferential direction.

4. The longitudinal slope adjusting device for precast T-beam in bridge engineering according to claim 1, characterized in that, The angle indicating unit also includes: The bent part (48) is connected to the inside of the snap-fit ​​part two (45); The recessed portion (49) is connected to the center of the bent portion (48) and recessed towards the connecting portion (43). A positioning hole (50) is provided in the center of the recessed portion (49). The claw (51) is connected to the side of the recess (49) away from the connecting part (43).

5. The longitudinal slope adjusting device for precast T-beam of bridge engineering according to claim 4, characterized in that, A reinforcing rod is connected between the recesses (49) of the two angle indicator units on the same side. The reinforcing rod is provided with a threaded hole and a positioning hole. The bolt passes through the positioning hole (50) and connects to the threaded hole. The claw (51) is engaged in the positioning hole.

6. The longitudinal slope adjusting device for precast T-beam of bridge engineering according to claim 1, characterized in that, The limiting unit also includes: Core rod 2 (63) is connected to the center of the limiting cavity (61) and arranged close to the inside of the indicator rod (47). Core rod 2 (63) passes through the end of core rod 1 (62) and is connected to the baffle (75) on the inner wall of core rod 1 (62). Core rod 2 (63) is slidably connected to the center hole of the end (69).

7. The longitudinal slope adjusting device for precast T-beam in bridge engineering according to claim 1, characterized in that, The limiting unit also includes: Piston plate (76) is slidably connected to the inner wall of core rod (62). Piston plate (76) is connected to drive plate (66) through piston rod (81). A spring is connected between piston plate (76) and the end of inner wall of core rod (62). A connecting hole (77) is provided on the baffle (75) to connect the two sides of the cavity of the core rod (62); The annular cavity (78) is concentrically opened at the inner end of the core rod (62); The annular piston plate (79) is slidably connected in the annular cavity (78), and the annular piston plate (79) is connected to the end (69) through the piston rod (80).

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