Device for accurately adjusting height of embedded steel plate and adjusting method thereof

Abstract

The present application relates to the technical field of bridge construction, and discloses a device capable of precisely adjusting the height of a pre-buried steel plate, which comprises a base, a support plate fixedly arranged on the upper surface of the base, two first sliding grooves arranged at the left and right ends of the support plate respectively, two limiting rings fixedly connected to the top of the support plate at the front and rear ends respectively, two sliding blocks in one-to-one correspondence with the two first sliding grooves respectively, a threaded sleeve rotatably connected to the sliding block, a locking structure arranged in the sliding block, the locking structure selectively locking the sliding block and the threaded sleeve, a first screw rod penetrating through the support plate and the threaded sleeve, the first screw rod being threadedly connected with the threaded sleeve and rotatably connected with the support plate, and a bearing plate arranged on the top of the support plate. The present application also discloses an adjusting method based on the device. The present application can precisely adjust the height and slope of the pre-buried plate.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a device and method for precisely adjusting the height of a pre-embedded steel plate. Background Technology

[0002] Precast concrete beams for bridges are widely used in the design and construction of bridges in highway and railway engineering fields due to their excellent mechanical properties, clear stress distribution, material savings, convenient erection and installation, large span capacity, and good visual effect under the bridge. Common precast beams include precast concrete T-beams and precast concrete box girders. During the fabrication of precast concrete beams, the steel plates embedded at the bottom of the precast beams need to be sloped according to the longitudinal and transverse slopes of the bridge alignment.

[0003] Patent CN112976298B discloses a slope adjustment device for a pre-embedded steel plate at the bottom of a T-beam, comprising a base, a bearing plate, a support plate, and an adjustment mechanism. The support plate is vertically positioned in the middle of the base, and the bearing plate is hinged to the top of the support plate in the middle. The cross-section of the bearing plate is an inverted isosceles triangle. The adjustment mechanism includes a first slider, a second slider, and a first screw. The first and second sliders are symmetrically arranged on both sides of the support plate and are slidably connected to the top of the base. The tops of both the first and second sliders abut against the bottom of the bearing plate. The first screw is horizontally rotatably connected to the top of the base and passes horizontally through the first slider, the support plate, and the second slider in sequence. The first screw is threadedly connected to the first slider and the second slider and is rotatably connected to the support plate. However, the patent still has the following defects: when the angle of the support plate is adjusted to a large extent, since the height of the embedded steel plate cannot be adjusted, the height of one end of the bearing plate will be higher than the height of the reserved slot of the beam-making platform. This makes the device unable to adapt to reserved slots of different depths, further reducing the application range of the device and making it unsuitable for various types of beam-making platforms.

[0004] Therefore, for those skilled in the art, designing a device and method for precisely adjusting the height of the embedded plate, based on the ability to adjust the slope of the embedded plate, and simultaneously achieving precise adjustment of both the height and slope of the embedded plate, has become an urgent technical problem to be solved. Summary of the Invention

[0005] To overcome the shortcomings mentioned above, this invention aims to provide a device and method for precisely adjusting the height of a pre-embedded steel plate, thereby achieving precise adjustment of the height and slope of the pre-embedded plate.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: The present invention provides a device for precisely adjusting the height of a pre-embedded steel plate, comprising:

[0007] A base, wherein a first sliding groove is formed on the upper surface of the base;

[0008] A support plate is fixedly installed on the upper surface of the base. Two first sliding grooves are respectively provided at the left and right ends of the support plate, and two limiting rings are respectively fixedly connected at the front and rear ends of the top of the support plate.

[0009] Two sliders are slidably connected to the two first slide grooves respectively. A threaded sleeve is rotatably connected inside the slider. A locking structure is provided inside the slider. The locking structure selectively locks the slider and the threaded sleeve together.

[0010] A first screw rod is provided through the support plate and the threaded sleeve, the first screw rod is threadedly connected to the threaded sleeve, and the first screw rod is rotatably connected to the support plate;

[0011] The support plate is provided on the top of the support plate. A first rotating shaft is connected through the middle of the support plate. Two limiting rings are respectively passed through the front and rear ends of the first rotating shaft. The first rotating shaft and the limiting rings are slidably connected in the vertical direction. The cross-section of the support plate is an obtuse triangle. The two short surfaces of the support plate abut against the top ends of the two sliders respectively.

[0012] Furthermore, the outer wall of the threaded sleeve is provided with grooves;

[0013] The locking mechanism includes a locking block that is slidably embedded in the slider along the radial direction of the threaded sleeve. The locking block is selectively embedded in or disengaged from the groove to lock or unlock the threaded sleeve and the slider.

[0014] Furthermore, the slider has a second sliding groove and a third sliding groove that are connected to each other. The second sliding groove is slidably connected to the locking block, and the third sliding groove is located at the end of the second sliding groove away from the threaded sleeve.

[0015] The locking structure further includes:

[0016] A limiting rod is fixedly connected to the side wall of the locking block away from the threaded sleeve, and the limiting rod is slidably connected to the second slide groove and the third slide groove respectively;

[0017] A return spring is sleeved around the periphery of the limiting rod. One end of the return spring is connected to the locking block, and the other end of the return spring is connected to the side wall of the second slide groove away from the threaded sleeve. The return spring is used to drive the locking block to be embedded in the groove.

[0018] And an unlocking component, which can drive the locking block to disengage from the groove against the force of the reset spring.

[0019] Furthermore, the slider is provided with a first through hole extending in the left-right direction;

[0020] The upper surface of the lock block is provided with a protruding rod;

[0021] The unlocking component includes: an unlocking plate slidably connected to a first through hole, the unlocking plate being disposed through the first through hole in a direction close to the support plate, the unlocking plate being provided with a second through hole, the second through hole being slidably connected to a protruding rod, and the second through hole extending along a vector and direction close to the support plate and away from the threaded sleeve.

[0022] Furthermore, the unlocking plate has a first inclined surface at one end near the support plate, and the slider has a slide rail on the side wall near the support plate;

[0023] The unlocking assembly also includes a slide rod that is slidably connected to the slide rail. The end of the slide rod near the unlocking plate is provided with a second inclined surface, and the second inclined surface is slidably connected to the first inclined surface.

[0024] Furthermore, the unlocking component also includes:

[0025] A fixing block is fixed to the side wall of the slider, and the fixing block is located on the side of the slider away from the unlocking plate;

[0026] And a second screw threadedly connected to the fixed block, the second screw being disposed in the extension direction of the slide bar.

[0027] Furthermore, a roller is rotatably mounted on the top of the slider, and the roller abuts against the short side of the support plate. Baffles are respectively provided at the left and right ends of the top of the support plate.

[0028] Furthermore, two fixing plates are fixedly connected to the upper surface of the base. The two fixing plates are respectively disposed on the side of the two first sliding grooves away from the bearing plate. The fixing plates are rotatably connected to the first screw. One end of the first screw passes through one of the fixing plates and is connected to a handwheel.

[0029] Compared with the prior art, the present invention has at least the following advantages: By adjusting the slope and height of the bearing plate, the present invention achieves a precise adjustment process for the height of the embedded steel plate, based on the existing technology which can adjust the slope of the embedded steel plate. This makes the bearing plate applicable to reserved slots of different depths, and its application range is wider.

[0030] Another aspect of the present invention provides an adjustment method based on the above-described device for precisely adjusting the height of an embedded steel plate, comprising the following steps:

[0031] Step 1: Based on the length of the precast beam, determine the distance between the beam-making platform and the end of the precast beam, and further determine the position of the bottom formwork of the platform;

[0032] Step 2: Based on the manufacturing position of the precast beam, a reserved slot is set on the beam manufacturing platform. The device that can accurately adjust the height of the embedded steel plate is installed at the reserved slot, and the height and slope of the bearing plate are adjusted to match the height and slope of the embedded steel plate.

[0033] Step 3: Place the embedded steel plate on top of the bearing plate;

[0034] Step 4: Using the beam-making platform as a reference plane, measure and verify the height and slope of the bearing plate. If there is any error, adjust the height and slope of the bearing plate again.

[0035] Furthermore, the top of the inner wall of the reserved slot is stepped notch, and an angle steel is detachably connected to the notch;

[0036] The second step also includes installing angle steel on the inner wall of the reserved slot after the height and slope of the bearing plate are adjusted. One of the outer walls of the angle steel is flush with the upper surface of the beam-making platform, and the other outer wall of the angle steel abuts against both ends of the bearing plate.

[0037] The adjustment method for precisely adjusting the height of the embedded steel plate described above has the same advantages over the prior art as the device for precisely adjusting the height of the embedded steel plate described above, and will not be repeated here. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the overall structure of the device for precisely adjusting the height of the embedded steel plate according to the present invention;

[0040] Figure 2 A cross-sectional view of the device and method for precisely adjusting the height of the embedded steel plate according to the present invention;

[0041] Figure 3 For the present invention Figure 2 A magnified view of a portion of region A in the middle;

[0042] Figure 4 Another cross-sectional view of the device for precisely adjusting the height of the embedded steel plate according to the present invention;

[0043] Figure 5 For the present invention Figure 4 A magnified view of a portion of region B in the middle;

[0044] Figure 6 This is a diagram illustrating the effect of the device for precisely adjusting the height of the embedded steel plate according to the present invention.

[0045] Reference numerals in the attached drawings: 1. Base; 2. First slide groove; 3. Support plate; 4. Limiting ring; 5. Slider; 6. Threaded sleeve; 7. First screw; 8. Bearing plate; 9. First rotating shaft; 10. Groove; 11. Locking block; 12. Second slide groove; 13. Third slide groove; 14. Limiting rod; 15. Return spring; 16. First through hole; 17. Protruding rod; 18. Unlocking plate; 19. Second through hole; 20. First inclined surface; 21. Slide rail; 22. Slide rod; 23. Second inclined surface; 24. Fixing block; 25. Second screw; 26. Roller; 27. Fixing plate; 28. Handwheel; 29. ​​Beam-making platform; 30. Reserved slot; 31. Angle steel. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Reference Figure 1 , Figure 2 and Figure 4 The present invention provides a device for precisely adjusting the height of a pre-embedded steel plate, comprising a base 1, a support plate 3, a slider 5, a first screw 7, and a bearing plate 8.

[0049] The base 1 serves as the supporting component of this invention, and a first sliding groove 2 is formed on the upper surface of the base 1. A support plate 3 is fixedly installed on the upper surface of the base 1, located in the middle of the base 1. A first sliding groove 2 is provided at each of the left and right ends of the support plate 3, and two limiting rings 4 are fixedly connected to the front and rear ends of the top of the support plate 3, respectively. Two sliders 5 are slidably connected to the two first sliding grooves 2, respectively. A threaded sleeve 6 is embedded within each slider 5, and the slider 5 and the threaded sleeve 6 are rotatably connected. The threaded sleeve 6 has internal threads, and a locking structure is provided within the slider 5, selectively locking the slider 5 and the threaded sleeve 6 together. A first screw 7 has external threads, passes through the support plate 3 and the threaded sleeve 6, and is threadedly connected to the threaded sleeve 6. The first screw 7 is rotatably connected to the support plate 3. A bearing plate 8 is provided on the top of the support plate 3. The bearing plate 8 is used to support the embedded steel plate (not shown in the figure). A first rotating shaft 9 is connected through the middle of the bearing plate 8. Two limiting rings 4 are respectively passed through the front and rear ends of the first rotating shaft 9. The first rotating shaft 9 and the limiting rings 4 are slidably connected in the vertical direction. The cross-section of the bearing plate 8 is an obtuse triangle, preferably an isosceles obtuse triangle. The bearing plate 8 is formed by two short faces and one long face. The two short faces of the bearing plate 8 abut against the tops of the two sliders 5 respectively. The short faces and long faces are relative descriptions and not specific.

[0050] When the locking structure is used to lock the slider 5 and the threaded sleeve 6, the slider 5 and the threaded sleeve 6 can move synchronously in the left and right directions when the first screw 7 is rotated; when the locking structure is used to unlock the slider 5 and the threaded sleeve 6, the threaded sleeve 6 rotates with the first screw 7 when the first screw 7 is rotated, and the slider 5 remains stationary relative to the base 1 and cannot move in the left and right directions.

[0051] Patent CN112976298B discloses a slope adjustment device for a pre-embedded steel plate at the bottom of a T-beam. In this patent, the cross-section of the bearing plate is an isosceles triangle. The rotation of the first screw drives the first slider and the second slider to move in the same direction to adjust the slope of the bearing plate. In actual use, it is difficult to achieve simultaneous contact between the first slider and the second slider and the bottom of the bearing plate. In fact, when one of the first slider and the second slider contacts the bottom of the bearing plate, the first screw may not be able to rotate.

[0052] In this invention, the two sliders 5 can move simultaneously or one of the sliders 5 can move independently. Since the first rotating shaft 9 and the limiting ring 4 are slidably connected in the vertical direction, the two short surfaces of the bearing plate 8 respectively abut against the tops of the two sliders 5. When the two sliders 5 move in the left and right direction, they can also drive the bearing plate 8 to move in the vertical direction, thereby realizing the adjustment of the height of the bearing plate 8.

[0053] A locking structure is used to selectively lock the slider 5 and the threaded sleeve 6, allowing both sliders 5 to move simultaneously or one slider 5 to move independently. In use, firstly, the slope of the bearing plate 8 is adjusted by moving one or both sliders 5, making the slope of the bearing plate 8 the same as that of the embedded steel plate. Then, the height of the bearing plate 8 is adjusted by moving the two sliders 5 towards or away from each other. It should be noted that because the embedded steel plate has a slope angle, the slider 5 closer to the slope angle should move a greater distance than the slider 5 farther from the slope angle. Therefore, the distances the two sliders 5 move simultaneously are not equal during the adjustment of the bearing plate 8's height.

[0054] Specifically, in this invention, after the slope of the support plate 8 is adjusted, the specific distance that the two sliders 5 need to be adjusted can be calculated by the angle between the two short surfaces and the horizontal direction and the height that the support plate 8 needs to be adjusted, so as to achieve a precise adjustment process.

[0055] Optionally, the first screw 7 in this scheme is a twin screw. When the twin screw is selected to rotate in the same direction, the two sliders 5 move simultaneously in the same direction when the first screw 7 is rotated, which makes it easier to adjust the slope of the bearing plate 8. When the twin screw is selected to rotate inwards in opposite directions or outwards in opposite directions, the two sliders 5 move simultaneously towards or away from each other when the first screw 7 is rotated, which makes it easier to adjust the height of the bearing plate 8.

[0056] Through the above-described process, the present invention, by adjusting the slope and height of the bearing plate 8, achieves precise adjustment of the height of the embedded steel plate, building upon the existing technology which allows for adjusting the slope of the embedded steel plate. This enables the bearing plate 8 to be applicable to reserved slots 30 of different depths, thus broadening its applicability.

[0057] Combined with reference Figure 3 and Figure 5 The outer wall of the threaded sleeve 6 is provided with grooves 10, and the number of grooves 10 is several, which are arranged in a circumferential array along the axis of the threaded sleeve 6. The locking structure includes a locking block 11, which is embedded in the slider 5 and slidably connected to the slider 5. It can move in the radial direction of the threaded sleeve 6. The locking block 11 can be selectively engaged or disengaged from the grooves 10 to lock or unlock the threaded sleeve 6 and the slider 5.

[0058] Preferably, the slider 5 has a connected second slide groove 12 and a third slide groove 13. The second slide groove 12 is slidably connected to the locking block 11, and the third slide groove 13 is located at the end of the second slide groove 12 away from the threaded sleeve 6. The locking structure also includes a limiting rod 14, a return spring 15, and an unlocking assembly. The limiting rod 14 is fixedly connected to the side wall of the locking block 11 away from the threaded sleeve 6. The limiting rod 14 is slidably connected to the second slide groove 12 and the third slide groove 13 respectively. The return spring 15 is sleeved around the limiting rod 14. In this embodiment, the return spring 15 is a compression spring. One end of the return spring 15 is connected to the locking block 11, and the other end of the return spring 15 is connected to the side wall of the second slide groove 12 away from the threaded sleeve 6. The return spring 15 is used to drive the locking block 11 to be embedded in the groove 10. The unlocking assembly can drive the locking block 11 to overcome the force of the return spring 15 and disengage from the groove 10.

[0059] Preferably, the slider 5 has a first through hole 16 extending through it in the left-right direction. A protruding rod 17 is provided on the upper surface of the locking block 11. The unlocking assembly includes an unlocking plate 18, which is slidably connected to the first through hole 16. The unlocking plate 18 extends through the first through hole 16 in the direction close to the support plate 3. A second through hole 19 is provided on the unlocking plate 18, which is slidably connected to the protruding rod 17. The second through hole 19 extends along the vector direction close to the support plate 3 and away from the threaded sleeve 6.

[0060] When the first screw 7 drives the slider 5 to move toward the support plate 3, when the unlocking plate 18 contacts the support plate 3, the unlocking plate 18 will stop moving and remain stationary with the support plate 3, while the first screw 7 continues to move toward the support plate 3. The protrusion 17 will slide in the second through hole 19, and the locking block 11 will gradually disengage from the groove 10. Further, after the locking block 11 disengages from the groove 10, the threaded sleeve 6 rotates simultaneously with the first screw 7, while the slider 5 and the support plate 3 remain relatively stationary. Conversely, when the first screw 7 rotates in the opposite direction, the locking block 11 moves toward the groove 10 under the action of the return spring 15, and the protrusion 17 slides in the second through hole 19. Further, the locking block 11 is embedded in the groove 10, the threaded sleeve 6 and the slider 5 remain relatively stationary, and at the same time, the protrusion 17 slides in the second through hole 19. The unlocking plate 18 moves toward the support plate 3 relative to the slider 5 until the unlocking rod returns to its initial position. At this time, the first screw 7 can drive the slider 5 away from the support plate 3.

[0061] This design has several advantages. First, it prevents damage to the device by causing the first screw 7 to continue rotating when the slider 5 moves toward the support plate 3 and comes into contact with it due to human error. Second, the movement of the slider 5 toward the support plate 3 will cause the first rotating shaft 9 to move vertically upward. By designing the unlocking plate 18 to protrude beyond the length of the slider 5, it is possible to effectively prevent the first rotating shaft 9 from dislodging from the limiting ring 4 due to human error. Third, by manually pressing the unlocking plate 18 to move it inward toward the slider 5, the power between the slider 5 and the threaded sleeve 6 can be interrupted, allowing for the individual adjustment of the other slider 5.

[0062] Preferably, the unlocking plate 18 has a first inclined surface 20 at one end near the support plate 3, and the slider 5 has a slide rail 21 on the side wall near the support plate 3; the unlocking assembly also includes a slide rod 22, which is slidably connected to the slide rail 21, and the slide rod 22 has a second inclined surface 23 at one end near the unlocking plate 18, which is slidably connected to the first inclined surface 20.

[0063] The slide bar 22 moves toward the unlocking plate 18, and the second inclined surface 23 slides relative to the first inclined surface 20, causing the unlocking plate 18 to move toward the slider 5. Furthermore, the locking block 11 disengages from the groove 10, and the working principle is the same as above, which will not be repeated here. The slider 5 and the threaded sleeve 6 are unlocked. At this time, the slider 5 moves away from the unlocking plate 18, and the locking block 11 is further embedded in the groove 10, and the slider 5 and the threaded sleeve 6 are locked together.

[0064] Preferably, the unlocking assembly further includes a fixing block 24 and a second screw 25. The fixing block 24 is fixed to the side wall of the slider 5 and is located on the side of the slide rod 22 away from the unlocking plate 18; the second screw 25 is threadedly connected to the fixing block 24 and is located in the extending direction of the slide rod 22. When the second screw 25 is screwed on so that it abuts against the end of the slide rod 22 away from the unlocking plate 18, the slide rod 22 can be moved toward or away from the unlocking plate 18.

[0065] This structure allows for the manual interruption or connection of the power transmission between the slider 5 and the threaded sleeve 6, facilitating the adjustment of a single slider 5.

[0066] Preferably, a roller 26 is rotatably mounted on the top of the slider 5, and the roller 26 abuts against the short side of the support plate 8. The roller 26 allows its outer wall to slide against the end face of the support plate 8, reducing wear on the end face of the support plate 8 during the movement of the slider 5. Baffles are provided at both the left and right ends of the top of the support plate 8. These baffles limit the position of the embedded steel plate, fixing its position and making its fixation more stable.

[0067] Preferably, two fixing plates 27 are fixedly connected to the upper surface of the base 1. The two fixing plates 27 are respectively set on the side of the two first sliding grooves 2 away from the bearing plate 8. The fixing plates 27 are rotatably connected to the first screw 7. One end of the first screw 7 passes through one of the fixing plates 27 and is connected to a handwheel 28.

[0068] Another aspect of the present invention provides an adjustment method based on the above-mentioned device for precisely adjusting the height of the embedded steel plate, comprising the following steps:

[0069] Step 1: Based on the length of the precast beam, determine the distance between the beam fabrication platform 29 and the end of the precast beam, and further determine the position of the beam fabrication platform 29;

[0070] Step 2: Based on the manufacturing position of the precast beam, a reserved slot 30 is set on the beam manufacturing platform 29. The device of the present invention, which can accurately adjust the height of the embedded steel plate, is installed at the reserved slot 30, and the height and slope of the bearing plate 8 are adjusted so that the height and slope of the bearing plate 8 are adapted to the height and slope of the embedded steel plate.

[0071] Step 3: Place the embedded steel plate above the bearing plate 8;

[0072] Step 4: Using the beam-making platform 29 as the reference plane, measure and verify the height and slope of the bearing plate 8. If there is any error, adjust the height and slope of the bearing plate 8 again.

[0073] Preferably, the top of the inner wall of the reserved slot 30 is stepped notch, and an angle steel 31 is detachably connected to the notch;

[0074] The second step also includes, after the height and slope of the bearing plate 8 are adjusted, installing angle steel 31 on the inner side wall of the reserved slot 30. One of the outer side walls of the angle steel 31 is flush with the upper surface of the beam-making platform 29, so that the other outer side wall of the angle steel 31 abuts against both ends of the bearing plate 8.

[0075] Angle steel 31 is provided so that both ends of the bearing plate 8 abut against the angle steel 31, thereby improving the sealing between the bearing plate 8 and the beam-making platform 29, and ensuring the sealing between the edge of the embedded steel plate and the beam-making platform 29, preventing grout leakage from contaminating the device of the present invention that can accurately adjust the height of the embedded steel plate.

[0076] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, 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, and therefore should not be construed as a limitation of this invention.

[0077] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for precisely adjusting the height of a pre-embedded steel plate, characterized in that, include: The base (1) has a first groove (2) on its upper surface; A support plate (3) is fixedly installed on the upper surface of the base (1). Two first sliding grooves (2) are respectively provided at the left and right ends of the support plate (3). Two limiting rings (4) are fixedly connected at the front and rear ends of the top of the support plate (3). Two sliders (5) are slidably connected to the two first slide grooves (2) respectively. A threaded sleeve (6) is rotatably connected inside the slider (5). A locking structure is provided inside the slider (5). The locking structure selectively locks the slider (5) and the threaded sleeve (6) together. A first screw (7) is provided through the support plate (3) and the threaded sleeve (6), the first screw (7) is threadedly connected to the threaded sleeve (6), and the first screw (7) is rotatably connected to the support plate (3); And a bearing plate (8) is provided on the top of the support plate (3). A first rotating shaft (9) is connected through the middle of the bearing plate (8). The front and rear ends of the first rotating shaft (9) are respectively connected through the two limiting rings (4). The first rotating shaft (9) and the limiting rings (4) are slidably connected in the vertical direction. The cross-section of the bearing plate (8) is an obtuse triangle. The two short surfaces of the bearing plate (8) abut against the tops of the two sliders (5). The outer wall of the threaded sleeve (6) is provided with grooves (10). The locking structure includes a locking block (11) that is slidably embedded in the slider (5) along the radial direction of the threaded sleeve (6). The locking block (11) is selectively embedded in or disengaged from the groove (10) to lock or unlock the threaded sleeve (6) and the slider (5). The slider (5) has a connected second slide groove (12) and a third slide groove (13). The second slide groove (12) is slidably connected to the locking block (11). The third slide groove (13) is located at the end of the second slide groove (12) away from the threaded sleeve (6). The locking structure further includes: The locking block (11) is fixedly connected to a limiting rod (14) on the side wall away from the threaded sleeve (6), and the limiting rod (14) is slidably connected to the second slide groove (12) and the third slide groove (13) respectively. A return spring (15) is sleeved around the limit rod (14). One end of the return spring (15) is connected to the locking block (11), and the other end of the return spring (15) is connected to the side wall of the second slide groove (12) away from the threaded sleeve (6). The return spring (15) is used to drive the locking block (11) to be embedded in the groove (10). And an unlocking component, which can drive the locking block (11) to disengage from the groove (10) against the force of the reset spring (15).

2. The device for precisely adjusting the height of the embedded steel plate according to claim 1, characterized in that, The slider (5) has a first through hole (16) extending through it in the left and right direction; The upper surface of the locking block (11) is provided with a protruding rod (17). The unlocking assembly includes: an unlocking plate (18) slidably connected to the first through hole (16), the unlocking plate (18) being disposed through the first through hole (16) in a direction close to the support plate (3), the unlocking plate (18) being provided with a second through hole (19), the second through hole (19) being slidably connected to the protruding rod (17), the second through hole (19) extending along the vector and direction close to the support plate (3) and away from the threaded sleeve (6).

3. The device for precisely adjusting the height of the embedded steel plate according to claim 2, characterized in that, The unlocking plate (18) has a first inclined surface (20) at one end near the support plate (3), and the slider (5) has a slide rail (21) on the side wall near the support plate (3). The unlocking assembly also includes a slide rod (22) that is slidably connected to the slide rail (21). The slide rod (22) has a second inclined surface (23) at one end near the unlocking plate (18). The second inclined surface (23) is slidably connected to the first inclined surface (20).

4. The device for precisely adjusting the height of the embedded steel plate according to claim 3, characterized in that, The unlocking component also includes: A fixing block (24) is fixed on the side wall of the slider (5), and the fixing block (24) is located on the side of the slide rod (22) away from the unlocking plate (18); And a second screw (25) threadedly connected to the fixing block (24), the second screw (25) being disposed in the extension direction of the slide bar (22).

5. The device for precisely adjusting the height of the embedded steel plate according to any one of claims 1 to 4, characterized in that, The top of the slider (5) is rotatably provided with a roller (26), which abuts against the short side of the bearing plate (8). The top left and right ends of the bearing plate (8) are respectively provided with baffles.

6. The device for precisely adjusting the height of the embedded steel plate according to any one of claims 1 to 4, characterized in that, Two fixing plates (27) are fixedly connected to the upper surface of the base (1). The two fixing plates (27) are respectively set on the side of the two first slide grooves (2) away from the bearing plate (8). The fixing plates (27) are rotatably connected to the first screw (7). One end of the first screw (7) passes through one of the fixing plates (27) and is connected to a handwheel (28).

7. An adjustment method for a device based on any one of claims 1 to 6 that can precisely adjust the height of an embedded steel plate, characterized in that, Includes the following steps: Step 1: Based on the length of the precast beam, determine the distance between the beam-making platform (29) and the end of the precast beam, and further determine the position of the beam-making platform (29); Step 2: Based on the production position of the precast beam, a reserved slot (30) is set on the beam production platform (29), and the device that can accurately adjust the height of the embedded steel plate is installed at the reserved slot (30). The height and slope of the bearing plate (8) are adjusted so that the height and slope of the bearing plate (8) are compatible with the height and slope of the embedded steel plate. Step 3: Place the embedded steel plate on top of the bearing plate (8); Step 4: Using the beam-making platform (29) as the reference plane, measure and check the height and slope of the bearing plate (8). If there is an error, adjust the height and slope of the bearing plate (8) again.

8. The adjustment method according to claim 7, characterized in that: The top of the inner wall of the reserved slot (30) is stepped notch, and an angle steel (31) can be detachably connected to the notch. The second step also includes installing angle steel (31) on the inner wall of the reserved slot (30) after the height and slope of the bearing plate (8) are adjusted. One of the outer walls of the angle steel (31) is flush with the upper surface of the beam-making platform (29), and the other outer wall of the angle steel (31) abuts against both ends of the bearing plate (8).

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