A concrete floor slab web height adjustment device

Abstract

The application relates to the technical field of building construction, in particular to a concrete bottom plate fiber height adjusting device, which comprises a bottom support, a height adjusting screw rod arranged vertically and rotationally connected to the bottom support, and a steel bar fixing clamp slidably connected to the height adjusting screw rod in the vertical direction, the steel bar fixing clamp comprises a screw sleeve sleeved on the height adjusting screw rod and a plurality of supporting arms arranged on the outer wall of the screw sleeve, the axial direction of the supporting arms is parallel to the radial direction of the screw sleeve, a limiting clamping rod is arranged on the supporting arm, at least two limiting clamping rods are arranged on the same supporting arm, and a limiting groove for clamping the fiber is formed between the two limiting clamping rods. The application has the effect of conveniently adjusting the height of the raft plate fiber.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a device for adjusting the height of the reinforcing bars on a concrete base slab. Background Technology

[0002] During the reinforcement construction of concrete foundation slabs in building projects, after the reinforcement is tied, the height of the slab reinforcement often fails to meet requirements due to uneven foundation levels or worker errors. This results in the reinforcement height being either too high or too low compared to the design drawings and specifications. This is particularly problematic when the diameter of the slab reinforcement is large and the spacing is close, leading to a significant weight per square meter and making height adjustment difficult. Current technology typically uses tower cranes to adjust the slab reinforcement height, lifting the entire reinforcement structure before adjustment. However, this method lacks precision in height adjustment and is cumbersome, thus requiring further improvement. Summary of the Invention

[0003] To facilitate the adjustment of the height of the raft slab reinforcement, this application provides a device for adjusting the height of the concrete base slab reinforcement.

[0004] The concrete base slab reinforcement height adjustment device provided in this application adopts the following technical solution: A concrete slab reinforcement height adjustment device includes a base, a height adjustment screw vertically arranged and rotatably connected to the base, and a reinforcement fixing clip vertically slidably connected to the height adjustment screw. The reinforcement fixing clip includes a threaded sleeve threaded onto the height adjustment screw and multiple support arms disposed on the outer wall of the threaded sleeve. The axial direction of the support arms is parallel to the radial direction of the threaded sleeve. Limiting rods are provided on the support arms, and at least two limiting rods are provided on the same support arm, forming a limiting groove for reinforcement to be inserted between the two limiting rods.

[0005] By adopting the above technical solution, the longitudinal and transverse reinforcing bars of the raft slab reinforcement are respectively clamped in the limiting grooves between two adjacent limiting rods on different support arms. This effectively prevents relative movement between the reinforcing bar fixing clips and the raft slab reinforcement when the height adjusting screw rotates. Both ends of the raft slab reinforcement abut against the casting template, which limits the rotational freedom of the raft slab reinforcement. When the height adjusting screw rotates, the screw sleeve is restricted by the thread of the height adjusting screw and slides along the axial direction of the height adjusting screw. The reinforcing bar fixing clips move the raft slab reinforcement together, thereby achieving height adjustment of the raft slab reinforcement. The height adjustment of the raft slab reinforcement is more precise, and the operator only needs to operate on the raft slab reinforcement, without having to operate below it, which is more convenient.

[0006] Preferably, the base includes a supporting base plate and a limiting tube fixedly connected to the upper surface of the supporting base plate. A ball is fixedly connected to the lower end of the height adjusting screw. The diameter of the ball is larger than the diameter of the height adjusting screw. The ball is placed inside the cavity of the limiting tube. An anti-detachment ring plate is fixedly sleeved on the upper surface of the limiting tube. The lower part of the height adjusting screw passes through the inner hole of the anti-detachment ring plate.

[0007] By adopting the above technical solution, a ball is fixedly connected to the lower end of the height adjusting screw, which effectively reduces the contact area between the height adjusting screw and the support base plate and the inner wall of the limiting tube, thereby reducing the rotational friction between the height adjusting screw and the base. An anti-detachment ring plate is added to effectively reduce the possibility of the ball detaching from the limiting tube.

[0008] Preferably, the support arm includes a main tube disposed on the outer wall of the threaded sleeve and an extension rod slidably connected to the main tube along the axial direction. The limiting rod is disposed on the extension rod, and the main tube is provided with a first adjustment mechanism for adjusting the sliding position of the extension rod.

[0009] By adopting the above technical solution, the sliding position of the extension rod is adjusted by the first adjustment mechanism, thereby adjusting the position of the limiting rod on the support arm. This allows the device to adapt to raft slab reinforcements with different spacings, enabling the raft slab reinforcements with different spacings to be locked in the limiting groove, thus increasing the range of applications of the device. In addition, when the height position of the raft slab reinforcement is adjusted and the raft slab reinforcement is fixed, and the device needs to be disassembled, the height adjustment screw is rotated, causing the screw sleeve to descend, which in turn drives the support arm and the limiting rod to descend together. After the raft slab reinforcement slides out of the limiting groove, the extension rod is then driven by the first adjustment mechanism to slide closer to the screw sleeve, thereby shortening the length of the support arm. This ensures that the end of the extension rod is in a position that does not interfere with the nearby raft slab reinforcement. Then, the entire device is moved upward and pulled out of the raft slab reinforcement, thus achieving the disassembly of the device.

[0010] Preferably, the main tube has an axially oriented receiving cavity at the end away from the threaded sleeve for extended sliding insertion, and a first sliding groove communicating with the receiving cavity is formed on the lower end face of the main tube. The first adjustment mechanism includes a movable ring plate that slides vertically on the threaded sleeve, a first hinge rod with one end hinged to the movable ring plate, and a telescopic drive member disposed on the threaded sleeve to drive the movable ring plate to slide. The other end of the first hinge rod passes through the first sliding groove and is hinged to the extension rod. The first hinge rods on multiple extension rods are hinged to the same movable ring plate.

[0011] By adopting the above technical solution, the movable ring plate is raised and lowered by the telescopic movement of the telescopic drive component, thereby driving the extension rod to slide along the axial direction of the main tube through the first hinge rod, thus realizing the synchronous adjustment of the length of multiple support arms.

[0012] Preferably, the telescopic drive component is an electric cylinder, with the cylinder body fixedly connected to the outer wall of the threaded sleeve and the piston rod fixedly connected to the movable ring plate.

[0013] By adopting the above technical solution, the movable ring plate is driven to rise and slide by the extension and retraction of the piston rod of the electric cylinder.

[0014] Preferably, the lower end of the limiting lever is hinged to the extension rod, and the extension rod is provided with a second adjustment mechanism to adjust the swing angle of the free end of the limiting lever.

[0015] By adopting the above technical solution, the swing angle of the free end of the limiting rod is adjusted by the second adjustment mechanism, thereby adjusting the opening size of the limiting groove, which makes it easier for raft slab ribs of different diameters to be clamped in the limiting groove, thus increasing the application range of the device.

[0016] Preferably, the upper end face of the extension rod is provided with a storage groove, the limiting rod is hinged to the inner wall of the storage groove, and the limiting rod can be rotated and folded to be stored in the storage groove.

[0017] By adopting the above technical solution, the limiting rod can be rotated and folded into the storage groove, which facilitates the extension rod to slide completely into the storage cavity, greatly reducing the size of the support arm. Furthermore, the upper end face of the main tube does not need to have an avoidance groove for the limiting rod to slide through, ensuring the structural strength of the main tube and thus improving the load-bearing capacity of the main tube.

[0018] Preferably, the extension rod has a mounting cavity located below the storage groove, and the bottom inner wall of the storage groove is provided with a second sliding groove communicating with the mounting cavity. The second adjustment mechanism includes a slider that slides along the axial direction of the extension rod and is connected to the inner wall of the mounting cavity, a second hinge rod with one end hinged to the slider, and a driving component for driving the slider to slide. The other end of the second hinge rod passes through the second sliding groove and is hinged to the outer wall of the free end of the limiting rod.

[0019] By adopting the above technical solution, the sliding block of the driving component slides, thereby driving the free end of the limit lever to rotate and fold around the hinge point through the second hinge rod, realizing the swing switching between the vertical and horizontal states of the limit lever.

[0020] Preferably, the driving component includes an adjusting screw rotatably connected to the inner wall of the mounting cavity and a knob externally mounted on the extension rod and fixedly connected to the adjusting screw. The adjusting screw has a first threaded section and a second threaded section, with the threads of the first threaded section and the second threaded section having opposite directions. Two sliders on the same extension rod are respectively threaded onto the first threaded section and the second threaded section.

[0021] By adopting the above technical solution, the two sliders are restricted by the threads of the first and second thread sections respectively when the adjustment screw is turned by the knob, and slide synchronously towards each other or away from each other along the axial direction of the adjustment screw.

[0022] Preferably, the lower end face of the extension rod is provided with a third sliding groove communicating with the mounting cavity along the axial direction. The driving component includes a guide tube fixedly connected to the lower end face of the extension rod and arranged vertically, a movable rod slidably inserted into the guide tube, a third hinge rod with one end hinged to the movable rod, an elastic element built into the guide tube to force the movable rod to move upward in normal state, and a linkage rope fixedly connected between the screw sleeve and the movable rod. The other end of the third hinge rod passes through the third sliding groove and is hinged to the lower end face of the slider. The third hinge rod and the guide tube slide through the second sliding groove.

[0023] By adopting the above technical solution, the extension rod slides out of the main tube away from the axis of the screw sleeve. When the limiting rod near the height adjustment screw is fully exposed outside the main tube, the linkage rope is taut. During the extension rod's continued extension and sliding, the linkage rope pulls the movable rod down, thereby pulling the two sliders towards each other through the third hinge rod. The sliders slide and push the free end of the limiting rod upward to a vertical state through the second hinge rod, so that a limiting groove is formed between the two limiting rods. This facilitates the locking of the raft slab reinforcement in the limiting groove, thereby achieving the limiting and fixing of the raft slab reinforcement. At this time, the elastic element undergoes elastic deformation and has elastic potential energy. Once the height of the raft slab ribs has been adjusted and fixed, and the device needs to be disassembled, the height adjustment screw is rotated to lower the screw sleeve, causing the support arm and the limiting rod to descend together. This allows the raft slab ribs to slide out of the limiting groove. Then, the first adjustment mechanism drives the extension rod to slide and retract towards the screw sleeve. During the retraction and sliding of the extension rod, the elastic element forces the movable rod to move upward and reset. Through the third hinge rod, it drives the two sliders to slide away from each other. The sliding of the sliders pulls the free end of the limiting rod to rotate away from each other to a horizontal state through the second hinge rod, and then stores it in the storage groove. No additional drive component is needed to drive the limiting rod to swing, making it quick and convenient.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The longitudinal and transverse reinforcing bars of the raft slab reinforcement are respectively clamped in the limiting grooves between two adjacent limiting rods on different support arms, effectively preventing relative movement between the reinforcing bar fixing clips and the raft slab reinforcement when the height adjusting screw rotates. Both ends of the raft slab reinforcement abut against the casting template, and the casting template limits the rotational freedom of the raft slab reinforcement. When the height adjusting screw rotates, the screw sleeve is restricted by the thread of the height adjusting screw and slides along the axial direction of the height adjusting screw. The reinforcing bar fixing clips drive the raft slab reinforcement to move together, thereby achieving height adjustment of the raft slab reinforcement. The height adjustment of the raft slab reinforcement is more precise, and the operator only needs to operate on the raft slab reinforcement, without having to operate below it, which is more convenient. 2. The sliding position of the extension rod is adjusted by the first adjustment mechanism, thereby adjusting the position of the limiting rod on the support arm. This allows the device to be adapted to raft slab reinforcements with different spacings, so that the raft slab reinforcements with different spacings can be locked in the limiting groove, increasing the application range of the device. In addition, when the height position of the raft slab reinforcement is adjusted and the raft slab reinforcement is fixed, and the device needs to be disassembled, the height adjustment screw is rotated to lower the screw sleeve, which drives the support arm and the limiting rod to lower together. After the raft slab reinforcement slides out of the limiting groove, the extension rod is then driven by the first adjustment mechanism to slide closer to the screw sleeve, thereby shortening the length of the support arm. After the end of the extension rod is in a position that does not interfere with the nearby raft slab reinforcement, the entire device is then moved upward and pulled out of the raft slab reinforcement, thus realizing the disassembly of the device. 3. The swing angle of the free end of the limiting rod is adjusted by the second adjustment mechanism, thereby adjusting the opening size of the limiting groove, so that the raft slab reinforcements of different diameters can be clamped in the limiting groove, thus increasing the application range of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a concrete base plate reinforcement height adjustment device in Example 1.

[0026] Figure 2 This is a schematic diagram of the base structure in Example 1.

[0027] Figure 3 This is a schematic diagram of the support arm in Example 2.

[0028] Figure 4 This is a schematic diagram of the drive component in Embodiment 2.

[0029] Figure 5 This is a schematic diagram of the drive component in Embodiment 3.

[0030] Figure 6 This is a schematic diagram of the extension rod in Example 3.

[0031] Explanation of reference numerals in the attached drawings: 1. Base support; 11. Support base plate; 12. Limiting tube; 13. Anti-detachment ring plate; 2. Height adjustment screw; 21. Ball; 22. Handle; 3. Rebar fixing clip; 31. Screw sleeve; 32. Support arm; 321. Main tube; 3211. Storage cavity; 3212. First slide groove; 322. Extension rod; 3221. Storage slot; 3222. Second slide groove; 3223. Mounting cavity 3224. Third slide rail; 33. Limiting rod; 4. First adjusting mechanism; 41. Movable ring plate; 42. First hinge rod; 43. Electric cylinder; 5. Second adjusting mechanism; 51. Slider; 52. Second hinge rod; 53. Drive component; 531. Adjusting screw; 532. Knob; 533. Guide tube; 534. Movable rod; 535. Third hinge rod; 536. Spring; 537. Linkage rope. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0033] This application discloses a device for adjusting the height of reinforcement bars in a concrete base slab, referring to... Figure 1 It includes a base 1, a height adjusting screw 2 that is vertically set and rotatably connected to the base 1, and a steel bar fixing clip 3 that is vertically slidably connected to the height adjusting screw 2.

[0034] Reference Figure 2 The base support 1 includes a supporting base plate 11 and a limiting tube 12 fixedly connected to the upper end face of the supporting base plate 11. The supporting base plate 11 is used to place on the casting bottom mold. The limiting tube 12 is vertically arranged. A ball 21 is fixedly connected to the lower end of the height adjusting screw 2. The ball 21 is a steel ball with a diameter larger than that of the height adjusting screw 2. The ball 21 is built into the inner cavity of the limiting tube 12. An anti-detachment ring plate 13 is fixedly sleeved on the upper end face of the limiting tube 12. The inner diameter of the anti-detachment ring plate 13 is adapted to the outer diameter of the height adjusting screw 2. The lower part of the height adjusting screw 2 passes through the inner hole of the anti-detachment ring plate 13. A handle 22 is fixedly connected to the upper part of the height adjusting screw 2.

[0035] Reference Figure 1 , Figure 2The rebar fixing clip 3 includes a threaded sleeve 31 threaded onto the height adjusting screw 2 and multiple support arms 32 fixedly connected to the outer wall of the threaded sleeve 31. The axial direction of the support arms 32 is parallel to the radial direction of the threaded sleeve 31. In this embodiment, the support arms 32 are made of angle steel, and four support arms 32 are provided and evenly distributed around the axis of the threaded sleeve 31. A limit rod 33 is provided on the upper end face of the support arm 32. At least two limit rods 33 are provided on the same support arm 32. In this embodiment, four limit rods 33 are provided. The limit rods 33 are arranged vertically and are distributed axially at intervals along the support arm 32. A limiting groove for the rebar to be inserted is formed between two adjacent limit rods 33. The raft slab rebar includes several tied and fixed longitudinal and transverse rebars. The spacing between two adjacent longitudinal rebars and the spacing between two adjacent transverse rebars are equal.

[0036] The construction steps of a concrete base slab reinforcement height adjustment device according to an embodiment of this application are as follows: Step S1: Set up the bottom formwork and side formwork for pouring according to the construction drawings, and make the raft slab reinforcement. Step S2: Place the height adjustment device on the bottom mold for casting; Step S3: Two transverse steel bars on the raft slab reinforcement are respectively locked into the limiting grooves on the longitudinally arranged support arm 32, and two longitudinal steel bars are respectively locked into the limiting grooves on the transversely arranged support arm 32. This effectively prevents the steel bar fixing clip 3 and the raft slab reinforcement from moving relative to each other when the height adjustment screw 2 rotates. Both the transverse and longitudinal steel bars abut against the inner side wall of the casting side formwork. The casting side formwork limits the rotational freedom of the raft slab reinforcement. Step S4: By rotating the height adjusting screw 2 through the handle 22, the screw sleeve 31 slides along the axial direction of the height adjusting screw 2 due to the thread restriction of the height adjusting screw 2. The steel bar fixing clip 3 moves together with the raft slab reinforcement, thereby achieving the height adjustment of the raft slab reinforcement. The height adjustment of the raft slab reinforcement is more precise, and the operator only needs to operate on the raft slab reinforcement, without having to operate under the raft slab reinforcement, which is more convenient.

[0037] Example 2: The difference between this embodiment and Embodiment 1 is that, referring to... Figure 3 , Figure 4 The support arm 32 includes a main tube 321 fixedly connected to the outer wall of the threaded sleeve 31 and an extension rod 322 slidably connected to the main tube 321 along the axial direction. The axial direction of the main tube 321 is parallel to the radial direction of the threaded sleeve 31. A receiving cavity 3211 for extension and sliding insertion is provided axially at the end of the main tube 321 away from the threaded sleeve 31, and a first groove 3212 communicating with the receiving cavity 3211 is provided on the lower end face of the main tube 321.

[0038] The main tube 321 is provided with a first adjustment mechanism 4 for adjusting the sliding position of the extension rod 322. The first adjustment mechanism 4 includes a movable ring plate 41 that slides vertically and is sleeved on the threaded sleeve 31 and located below the main tube 321, a first hinge rod 42 with one end hinged to the movable ring plate 41, and a telescopic drive member provided on the threaded sleeve 31 to drive the movable ring plate 41 to slide. The other end of the first hinge rod 42 passes through the first sliding groove 3212 and is hinged to the extension rod 322. The first hinge rods 42 on multiple extension rods 322 are all hinged to the same movable ring plate 41. The telescopic drive member is an electric cylinder 43. The cylinder body of the electric cylinder 43 is fixedly connected to the lower end face of one of the main tubes 321, and the piston rod end of the electric cylinder 43 is fixedly connected to the upper end face of the movable ring plate 41.

[0039] The limiting rod 33 is disposed on the extension rod 322, and two limiting rods 33 are disposed on the same extension rod 322. In this embodiment, the upper end face of the extension rod 322 is provided with a storage groove 3221, and the lower end of the limiting rod 33 is hinged to the inner wall of the storage groove 3221. The limiting rod 33 can be rotated and folded to be stored in the storage groove 3221. The extension rod 322 is provided with a second adjustment mechanism 5 for adjusting the swing angle of the free end of the limiting rod 33. The second adjustment mechanism 5 includes a slider 51 that slides along the axial direction of the extension rod 322 and is connected to the inner wall of the mounting cavity 3223, a second hinge rod 52 with one end hinged to the slider 51, and a driving component 53 for driving the slider 51 to slide. The number of sliders 51 and the number of second hinge rods 52 correspond to the number of limiting rods 33. The other end of the second hinge rod 52 passes through the second sliding groove 3222 and is hinged to the outer wall of the free end of the limiting rod 33.

[0040] The drive component 53 includes an adjusting screw 531 rotatably connected to the inner wall of the mounting cavity 3223 and a knob 532 externally placed on the extension rod 322 and fixedly connected to the adjusting screw 531. The adjusting screw 531 has a first threaded section and a second threaded section, with the threads of the first threaded section and the second threaded section having opposite directions. Two sliders 51 on the same extension rod 322 are respectively threaded onto the first threaded section and the second threaded section.

[0041] The implementation principle of Example 2 is as follows: Under normal conditions, the limiting rod 33 is folded to a horizontal state and stored in the storage groove 3221, and the extension rod 322 slides and retracts into the storage cavity 3211 of the main tube 321. In step S3, the piston rod of the electric cylinder 43 drives the movable ring plate 41 to move upward. During the upward movement of the movable ring plate 41, the first hinge rod 42 pushes the extension rod 322 to slide away from the axis of the height adjustment screw 2. When the limiting rod 33 on the side close to the height adjustment screw 2 is completely exposed outside the main tube 321, the adjusting screw 531 is rotated by the knob 532. The two sliders 51 are respectively restricted by the first thread section and the second thread section, and slide synchronously towards each other along the axis of the adjusting screw 531. During the sliding of the sliders 51, the free end of the limiting rod 33 is pushed upward by the second hinge rod 52, so that a limiting groove is formed between the two limiting rods 33.

[0042] In step S4, after the height of the raft slab reinforcement is adjusted, the raft slab reinforcement is fixed to the casting side mold. When the device needs to be disassembled, the knob 532 is rotated in the opposite direction to drive the adjusting screw 531 to rotate, so that the limiting rod 33 rotates and is stored in the storage groove 3221. Then, the piston rod of the electric cylinder 43 extends and retracts to reset, driving the extension rod 322 to slide towards the screw sleeve 31, thereby shortening the length of the support arm 32. After the end of the extension rod 322 is in a position that does not interfere with the raft slab reinforcement, the device is then moved upward and pulled out of the raft slab reinforcement to remove the device.

[0043] Example 3: The difference between this embodiment and Embodiment 2 is that, referring to... Figure 5 , Figure 6 The lower end face of the extension rod 322 has a third sliding groove 3224 connected to the mounting cavity 3223 along the axial direction. The driving component 53 includes a guide tube 533 fixedly connected to the lower end face of the extension rod 322 and arranged vertically, a movable rod 534 slidably inserted into the guide tube 533, a third hinge rod 535 with one end hinged to the movable rod 534, an elastic element built into the guide tube 533 to force the movable rod 534 to move upward under normal conditions, and a linkage rope 537 fixedly connected between the screw sleeve 31 and the movable rod 534. The other end of the third hinge rod 535 passes through the third sliding groove 3224 and is hinged to the lower end face of the slider 51. The third hinge rod 535 and the guide tube 533 can slide through the second sliding groove 3222. The elastic element is a spring 536 built into the guide tube 533. One end of the spring 536 is fixedly connected to the inner wall of the guide tube 533, and the other end of the spring 536 is fixedly connected to the movable rod 534. One end of the linkage rope 537 is fixedly connected to the outer wall of the screw sleeve 31, and the other end of the linkage rope 537 is fixedly connected to the lower end face of the movable rod 534.

[0044] The implementation principle of Example 3 is as follows: In step S3, the piston rod of the electric cylinder 43 retracts to drive the movable ring plate 41 to move upward. During the upward movement of the movable ring plate 41, the first hinge rod 42 pushes the extension rod 322 to slide away from the axis of the height adjustment screw 2. When the limiting rod 33 on the side close to the height adjustment screw 2 is fully exposed outside the main tube 321, the linkage rope 537 is in a taut state. During the continued extension and sliding of the extension rod 322, the linkage rope 537 pulls the movable rod 534 downward, thereby pulling the two sliders 51 to slide towards each other through the third hinge rod 535. During the sliding of the sliders 51, the second hinge rod 52 pushes the free end of the limiting rod 33 to rotate upward to a vertical state, so that a limiting groove is formed between the two limiting rods 33, which facilitates the locking of the raft slab ribs in the limiting groove, thereby achieving the limiting and fixing of the raft slab ribs. At this time, the spring 536 undergoes elastic deformation and has elastic potential energy.

[0045] In step S4, when the device needs to be disassembled, the height adjustment screw 2 is rotated to lower the screw sleeve 31, which in turn lowers the support arm 32 and the limiting rod 33. This causes the raft slab surface rib to slide out of the limiting groove. Then, the piston rod of the electric cylinder 43 is extended and retracted to reset the device. This drives the extension rod 322 to slide and retract towards the screw sleeve 31. During the retraction and sliding of the extension rod 322, the linkage rope 537 is relaxed, and the spring 536 forces the movable rod 534 to move upward and reset. The third hinge rod 535 drives the two sliders 51 to slide away from each other. The second hinge rod 52 pulls the free end of the limiting rod 33 to rotate away from each other to a horizontal state and store it in the storage groove 3221, which is quick and convenient.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for adjusting the height of reinforcing bars on a concrete base slab, characterized in that: The device includes a base (1), a height adjusting screw (2) vertically arranged and rotatably connected to the base (1), and a steel bar fixing clip (3) vertically slidably connected to the height adjusting screw (2). The steel bar fixing clip (3) includes a threaded sleeve (31) threaded onto the height adjusting screw (2) and multiple support arms (32) disposed on the outer wall of the threaded sleeve (31). The axial direction of the support arms (32) is parallel to the radial direction of the threaded sleeve (31). Limiting rods (33) are provided on the support arms (32). At least two limiting rods (33) are provided on the same support arm (32), and a limiting groove for the steel bar to be inserted is formed between the two limiting rods (33). The support arm (32) includes a screw sleeve (31) threaded onto the threaded sleeve (2) and multiple support arms (32) disposed on the outer wall of the threaded sleeve (31). The main body tube (321) on the outer wall and the extension rod (322) slidably connected to the main body tube (321) along the axial direction, the limiting rod (33) is provided on the extension rod (322), the main body tube (321) is provided with a first adjustment mechanism (4) for adjusting the sliding position of the extension rod (322); the end of the main body tube (321) away from the screw sleeve (31) is provided with a receiving cavity (3211) for extension sliding insertion along the axial direction, the lower end face of the main body tube (321) is provided with a first sliding groove (3212) communicating with the receiving cavity (3211), the first adjustment mechanism (4) includes a movable ring plate (41) slidably sleeved on the screw sleeve (31) along the vertical direction, and a first sliding groove (3212) hinged to the movable ring plate (41) at one end. A hinge rod (42) and a telescopic drive component disposed on a screw sleeve (31) to drive the movable ring plate (41) to slide. The other end of the first hinge rod (42) passes through the first sliding groove (3212) and is hinged to the extension rod (322). The first hinge rods (42) on multiple extension rods (322) are hinged to the same movable ring plate (41). The lower end of the limiting rod (33) is hinged to the extension rod (322). The extension rod (322) is provided with a second adjustment mechanism (5) for adjusting the swing angle of the free end of the limiting rod (33). The upper end face of the extension rod (322) is provided with a receiving groove (3221). The limiting rod (33) is hinged to the inner wall of the receiving groove (3221). The positioning lever (33) can be rotated and folded into the storage groove (3221); the extension rod (322) has a mounting cavity (3223) located below the storage groove (3221), and the bottom inner wall of the storage groove (3221) is provided with a second sliding groove (3222) communicating with the mounting cavity (3223). The second adjustment mechanism (5) includes a slider (51) that slides along the axial direction of the extension rod (322) and is connected to the inner wall of the mounting cavity (3223), a second hinge rod (52) with one end hinged to the slider (51), and a driving component (53) that drives the slider (51) to slide. The other end of the second hinge rod (52) passes through the second sliding groove (3222) and is hinged to the outer wall of the free end of the positioning lever (33).The lower end face of the extension rod (322) is provided with a third sliding groove (3224) communicating with the mounting cavity (3223) along the axial direction. The driving component (53) includes a guide tube (533) fixedly connected to the lower end face of the extension rod (322) and arranged vertically, a movable rod (534) slidably inserted into the guide tube (533), a third hinge rod (535) with one end hinged to the movable rod (534), an elastic element built into the guide tube (533) to force the movable rod (534) to move upward under normal conditions, and a linkage rope (537) fixedly connected between the screw sleeve (31) and the movable rod (534). The other end of the third hinge rod (535) passes through the third sliding groove (3224) and is hinged to the lower end face of the slider (51). The third hinge rod (535) and the guide tube (533) slide through the second sliding groove (3222).

2. The concrete base slab reinforcement height adjustment device according to claim 1, characterized in that: The base (1) includes a supporting base plate (11) and a limiting tube (12) fixedly connected to the upper end face of the supporting base plate (11). The lower end of the height adjusting screw (2) is fixedly connected to a ball (21). The diameter of the ball (21) is larger than the diameter of the height adjusting screw (2). The ball (21) is built into the inner cavity of the limiting tube (12). The upper end face of the limiting tube (12) is fixedly fitted with an anti-detachment ring plate (13). The lower part of the height adjusting screw (2) passes through the inner hole of the anti-detachment ring plate (13).

3. The device for adjusting the height of concrete base slab reinforcement according to claim 1, characterized in that: The telescopic drive component is an electric cylinder (43). The cylinder body of the electric cylinder (43) is fixedly connected to the outer wall of the threaded sleeve (31), and the piston rod of the electric cylinder (43) is fixedly connected to the movable ring plate (41).

4. The device for adjusting the height of concrete base slab reinforcement according to claim 1, characterized in that: The driving component (53) includes an adjusting screw (531) rotatably connected to the inner wall of the mounting cavity (3223) and a knob (532) externally placed on the extension rod (322) and fixedly connected to the adjusting screw (531). The adjusting screw (531) has a first threaded section and a second threaded section, with the thread directions of the first threaded section and the second threaded section being opposite. Two sliders (51) on the same extension rod (322) are respectively threaded onto the first threaded section and the second threaded section.

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