Precast concrete reinforcement clamping and positioning device

Abstract

The invention discloses a precast concrete reinforcement clamping and positioning device which comprises symmetrically-arranged bottom plates, mounting plates and symmetrically-arranged upper surfaces of the bottom plates, a plurality of uniformly-arranged first connecting blocks are arranged between the mounting plates, second connecting blocks are mounted on one sides of the first connecting blocks, and the first connecting blocks and the second connecting blocks are the same in shape. Arc-shaped grooves are formed in the tops of the first connecting block and the second connecting block, and symmetrically-arranged supporting rods are connected to the positions, corresponding to the first connecting block and the second connecting block, between the mounting plates. Third rotating rods, first rotating rods and second rotating rods are sequentially pulled in the moving process of threaded sleeves, so that the first rotating rods are unfolded, the first rotating rods drive first connecting blocks or second connecting blocks to conduct position adjustment, and during adjustment, the adjacent first connecting blocks can be adjusted at equal intervals; workers do not need to place the reinforcing steel bars at specific positions, so that the operation time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering construction, and in particular relates to a precast concrete steel bar clamping and positioning device. Background Art

[0002] Precast concrete reinforcement refers to a steel reinforcement structure that is prefabricated in a factory or on a construction site and placed in a concrete component to enhance the strength and tensile properties of concrete. It helps improve quality control, speed up construction, and reduce on-site workload, and is widely used in construction and infrastructure projects.

[0003] When making precast concrete components, in order to ensure that the steel bars maintain the correct designed position and shape during the pouring and hardening of concrete, and to prevent the fluidity of the concrete from causing the steel bars to shift or deform during the pouring process, the steel bars need to be clamped and fixed, thereby enhancing the tensile and compressive properties of the concrete and ensuring the structural strength of the components.

[0004] The original casting mold and positioning device are an integrated structure. The positioning device can only locate steel bars at a specific spacing and has poor flexibility. When the spacing of steel bars in reinforced concrete is changed, the casting mold needs to be replaced as a whole, and the casting mold is expensive, which increases costs.

[0005] Patent CN112277151A discloses a steel bar positioning device for steel bar and concrete casting, which solves the problem of needing to replace the casting mold. However, when adjusting the positioning clamp and the horizontal slide, manual adjustment is required by observing the scale lines, which is cumbersome to operate and takes a lot of time, thereby reducing work efficiency.

[0006] Patent CN208039858U discloses a construction steel bar spacing control device, which solves the problem of needing to replace the casting mold. However, when adjusting the position of the slider, manual adjustment is performed by observing the pointer and the scale line, which is cumbersome to operate and takes a lot of time, thereby reducing work efficiency.

[0007] When making precast concrete slabs, according to process requirements, in order to ensure that the load bearing capacity of each position of the precast concrete slab is the same, the steel bars need to be placed equidistantly. The above two solutions cannot quickly adjust the steel bars equidistantly, and the number of steel bars placed inside the precast concrete slabs of the same size varies according to the load requirements. In this case, it is necessary to increase or decrease the number of positioning clamps or fixing tables according to the requirements of the steel bar setting. When reducing the number of positioning clamps or fixing tables, the above two solutions can improve efficiency. However, when increasing the number of positioning clamps or fixing tables, the above two solutions require more time for adjustment. Summary of the invention

[0008] One of the purposes of the present invention is to solve the problem in the prior art that when adjusting the position of the positioning clamp and the horizontal slide or the slider, the operation is cumbersome, a lot of time is consumed, and work efficiency is reduced.

[0009] The second purpose of the present invention is to solve the problem that the steel bars cannot be adjusted quickly and equidistantly.

[0010] The third purpose of the present invention is to solve the problem that the clamping plate affects the demoulding of the precast concrete slab.

[0011] The purpose of the present invention can be achieved by the following technical solutions: A precast concrete steel bar clamping and positioning device comprises a symmetrically arranged bottom plate, Mounting plate, symmetrically arranged upper surface of the base plate, A plurality of evenly arranged first connection blocks are arranged between the mounting plates, a second connection block is installed on one side of the first connection block, the first connection block and the second connection block have the same shape, and arc grooves are provided on the tops of the first connection block and the second connection block. The positions of the mounting plates corresponding to the first connecting block and the second connecting block are connected with symmetrically arranged support rods, and the positions of the first connecting block and the second connecting block corresponding to the support rods are provided with symmetrically arranged sliding grooves, and the support rods are slidably connected in the sliding grooves. A positioning rod is connected to the middle of the second connecting block away from the first connecting block, and a first rotating rod is rotatably connected to the middle of the positioning rod, and corresponding ends of adjacent first rotating rods are connected to each other. The two first rotating rods close to the mounting plate are rotatably connected to the second rotating rod and the third rotating rod respectively, and one end of the second rotating rod away from the first rotating rod is connected to the mounting plate through a positioning seat; One end of the third rotating rod away from the first rotating rod is rotatably connected with a threaded sleeve, and a screw rod is connected to the position corresponding to the threaded sleeve between the mounting plates through a bearing, and the threaded sleeve is threadedly connected to the outside of the screw rod.

[0012] Preferably, the positioning seat, the positioning rod and the threaded sleeve are on the same horizontal line.

[0013] Preferably, through holes are provided at positions of the first connecting block and the second connecting block corresponding to the screw rod, and the diameter of the through holes is larger than the diameter of the screw rod.

[0014] Preferably, one end of the lead screw is connected to a motor, and outer sides of the two lead screws close to the motor are respectively connected to sprockets, and a chain is meshed between the two sprockets.

[0015] Preferably, a side of the second connection block close to the first connection block is connected with symmetrically arranged plug-in blocks, and a position of the first connection block corresponding to the plug-in block is provided with symmetrically arranged slots, and the plug-in blocks are plugged into the slots.

[0016] A first positioning groove is provided in the middle of the plug block, a hollow groove is provided in the first connecting block at a position corresponding to the plug block, a first positioning block is provided in the hollow groove at a position corresponding to the first positioning groove, and the first positioning block is plugged into the first positioning groove. A pressure plate is connected to one side of the two first positioning blocks away from the plug block. The pressure plate is located in the hollow groove. A symmetrically arranged first spring is connected between the pressure plate and the first connecting block. A first shifting block is connected to one side of the pressing plate away from the second connecting block, a first movable groove is provided at a position of the first positioning block corresponding to the first shifting block, and the first shifting block is slidably connected in the first movable groove.

[0017] Preferably, the end of the insert block is arc-shaped, and the end of the first positioning block away from the pressure plate is arc-shaped.

[0018] Preferably, a T-shaped insertion rod is rotatably connected between corresponding ends of adjacent first rotating rods, and symmetrically arranged receiving grooves are provided at the ends of the insertion rod. A second positioning block is slidably connected in the receiving groove, and a second spring is connected between the second positioning block and the insertion rod.

[0019] A positioning ring is rotatably connected to the position of the second positioning block on the outer side of the insertion rod. A symmetrically arranged second positioning groove is opened on the positioning ring at the position corresponding to the second positioning block. The second positioning block is inserted into the second positioning groove. A second shifting block is connected to a side of the second positioning block away from the first rotating rod, and a symmetrically arranged second movable groove is provided at a position of the inserting block corresponding to the second shifting block, and the second shifting block is slidably connected in the second movable groove.

[0020] Preferably, the connection mode between the first rotating rod and the second rotating rod and between the first rotating rod and the third rotating rod is the same as the connection mode between adjacent first rotating rods.

[0021] Preferably, a placement groove is provided above the mounting plate near the support rod, a clamp is placed in the placement groove, and a quick clamp is installed at a position on the upper surface of the mounting plate corresponding to the clamp.

[0022] Beneficial effects of the present invention: After the first connecting block and the second connecting block of the present invention are added or removed, the two ends of the steel bar are placed in the arc grooves corresponding to the first connecting block and the second connecting block. After placement, one of the screw rods is driven to rotate by a motor, and the other screw rod is rotated synchronously with the cooperation of the sprocket and the chain. During the rotation of the two screw rods, the threaded sleeve will drive the threaded sleeve to move outside the screw rod. During the movement of the threaded sleeve, the third rotating rod, the first rotating rod and the second rotating rod will be pulled in turn, so that the first rotating rod is unfolded. The unfolding of the first rotating rod drives the first connecting block or the second connecting block to adjust the position, and when adjusting, the adjacent first connecting blocks can be adjusted equidistantly, and the staff does not need to place the steel bars in a specific position, which reduces the operation time and improves the work efficiency.

[0023] In actual use, the present invention can add or remove the first connecting block and the second connecting block according to the number of steel bars placed. After adding or removing the first connecting block and the second connecting block, the steel bars can also be adjusted equidistantly without replacing the casting mold, thereby improving adaptability and reducing costs.

[0024] The present invention is convenient for installing and removing the first connecting block and the second connecting block, and the operation is simple and quick, thereby improving efficiency.

[0025] The present invention is convenient for connecting and disconnecting adjacent first rotating rods, has simple and quick operation, and can improve efficiency.

[0026] After the position of the steel bar is adjusted, the present invention places the clamp in the placement groove and presses the clamp by means of a quick clamp. The clamp transmits pressure to the steel bar, thereby clamping and positioning the steel bar between the first connection block, the second connection block and the clamp, so that the steel bar is stabilized and prevented from being offset or collapsing in the middle due to the weight of the concrete when pouring concrete. When the precast concrete slab needs to be demoulded after being formed, the clamp can be removed from the placement groove to carry out the demoulding work, and the clamp will not affect the demoulding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 is a three-dimensional diagram of the first connecting block and the second connecting block in the present invention; Figure 2 is an exploded view of the first connecting block in the present invention; Figure 3 It is a schematic diagram of the slot in the present invention; Figure 4 It is a three-dimensional diagram of the first rotating rod, the second rotating rod and the third rotating rod in the present invention; Figure 5 is an exploded view of the first rotating rod in the present invention; Figure 6 It is a three-dimensional diagram of the screw rod and the support rod in the present invention; Figure 7 It is a three-dimensional diagram of the clamping plate and the quick clamp in the present invention; Figure 8 It is a front view of the clamp and the quick clamp in the present invention; Fig. 9 is a stereogram of the present invention; Fig.10 It is a three-dimensional view of the other side of the present invention.

[0029] In the figure: 1, bottom plate; 2, first connecting block; 3, positioning rod; 4, placement slot; 11. Mounting plate; 201, second connecting block; 202, arc groove; 203, slide groove; 204, through hole; 21, plug block; 22, slot; 23, first positioning groove; 24, first positioning block; 25, pressing plate; 251, hollow groove; 26, first spring; 27, first shifting block; 28, first movable groove; 301, first rotating rod; 302, inserting rod; 303, positioning ring; 304, receiving groove; 305, second positioning block; 306, second spring; 307, second positioning groove; 308, second shifting block; 309, second movable groove; 31. second rotating rod; 32. positioning seat; 33. third rotating rod; 34. threaded sleeve; 35. screw rod; 36. support rod; 37. motor; 371, sprocket; 373, chain; 41. Clamp; 42. Manual clamp. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 - Fig.10 As shown, a precast concrete steel bar clamping and positioning device comprises a symmetrically arranged bottom plate 1, the upper surface of the bottom plate 1 is connected with a symmetrically arranged mounting plate 11 for mounting a motor 37 and a quick clamp 42, and for connecting a screw rod 35 and a support rod 36; A plurality of evenly arranged first connection blocks 2 are arranged between the mounting plates 11, a second connection block 201 is installed on one side of the first connection block 2, and the first connection block 2 cooperates with the second connection block 201 to support the steel bars; The first connection block 2 and the second connection block 201 have the same shape. This arrangement can increase the stability between the first connection block 2 and the second connection block 201, and also make subsequent maintenance quicker and more convenient. The tops of the first connecting block 2 and the second connecting block 201 are provided with arc-shaped grooves 202 for placing steel bars, and the arc-shaped grooves 202 can accommodate steel bars of different diameters.

[0032] A symmetrically arranged plug block 21 is connected to one side of the second connection block 201 close to the first connection block 2. A symmetrically arranged slot 22 is provided at a position of the first connection block 2 corresponding to the plug block 21. The plug block 21 is inserted into the slot 22. The plug block 21 cooperates with the slot 22 to preliminarily connect the first connection block 2 and the second connection block 201. The end of the insert block 21 is arc-shaped, and this arrangement enables the insert block 21 to be quickly and accurately inserted into the slot 22; A first positioning groove 23 is provided in the middle of the plug block 21, a hollow groove 251 is provided in the first connection block 2 at a position corresponding to the plug block 21, a first positioning block 24 is provided in the hollow groove 251 at a position corresponding to the first positioning groove 23, the first positioning block 24 is inserted in the first positioning groove 23, and the first positioning block 24 cooperates with the first positioning groove 23 to fix the first connection block 2 and the second connection block 201, so that the first connection block 2 and the second connection block 201 can be stable; A pressure plate 25 is connected to one side of the two first positioning blocks 24 away from the inserting block 21. The pressure plate 25 is located in the hollow groove 251. A symmetrically arranged first spring 26 is connected between the pressure plate 25 and the first connecting block 2 to reset the pressure plate 25 and the first positioning block 24. One end of the first positioning block 24 away from the pressing plate 25 is arc-shaped. This arrangement makes it easier for the inserting block 21 to press the first positioning block 24. A first shift block 27 is connected to the side of the pressure plate 25 away from the second connecting block 201, and a first movable groove 28 is provided in the first positioning block 24 corresponding to the position of the first shift block 27. The first shift block 27 is slidably connected in the first movable groove 28. The first shift block 27 is used to move the position of the pressure plate 25 so that the first positioning block 24 is moved out of the first positioning groove 23, thereby losing the fixation between the first connecting block 2 and the second connecting block 201, and the first connecting block 2 and the second connecting block 201 are removed.

[0033] In specific use, when the first connecting block 2 and the second connecting block 201 are installed and connected, the plug block 21 of the second connecting block 201 is aligned with the slot 22 of the first connecting block 2 and inserted. During the insertion process, the plug block 21 will contact the first positioning block 24 and squeeze the first positioning block 24. The first positioning block 24 will move into the hollow groove 251 under the squeezing, driving the pressure plate 25 to slide in the hollow groove 251, thereby squeezing the first spring 26. The first spring 26 will shrink under the squeezing and store the restoring force. When the plug block 21 is inserted so that the first positioning block 24 corresponds to the first positioning groove 23, under the action of the restoring force of the first spring 26, the pressure plate 25 and the first positioning block 24 will reset, so that the first positioning block 24 is inserted into the first positioning groove 23, thereby completing the installation and connection of the first connecting block 2 and the second connecting block 201; When the first connecting block 2 and the second connecting block 201 need to be removed, the first shifting block 27 is shifted to slide in the first movable groove 28, and the first shifting block 27 drives the pressure plate 25 and the first positioning block 24 to move, so that the first positioning block 24 is moved out of the first positioning groove 23. At this time, the first connecting block 2 and the second connecting block 201 lose their fixation, and the inserting block 21 is taken out of the slot 22, and the first connecting block 2 and the second connecting block 201 can be removed. It is more convenient to install and remove the first connecting block 2 and the second connecting block 201, and the operation is simple and fast, which can improve efficiency.

[0034] A symmetrically arranged support rod 36 is connected between the mounting plates 11 at positions corresponding to the first connecting block 2 and the second connecting block 201, and a symmetrically arranged slide groove 203 is provided at positions of the first connecting block 2 and the second connecting block 201 corresponding to the support rod 36. The support rod 36 is slidably connected in the slide groove 203, and the support rod 36 cooperates with the slide groove 203 to support the first connecting block 2 and the second connecting block 201, and is also used to limit the positions of the first connecting block 2 and the second connecting block 201, so that the first connecting block 2 and the second connecting block 201 can only slide on the outside of the support rod 36, thereby preventing the first connecting block 2 and the second connecting block 201 from deflecting.

[0035] A positioning rod 3 is connected to the middle of the second connecting block 201 on the side away from the first connecting block 2, and a first rotating rod 301 is rotatably connected to the middle of the positioning rod 3. The corresponding ends of adjacent first rotating rods 301 are connected to each other, and a T-shaped insertion rod 302 is rotatably connected between the corresponding ends of adjacent first rotating rods 301. The ends of the insertion rods 302 are provided with symmetrically arranged receiving grooves 304 for receiving the second spring 306 and the second positioning block 305. A second positioning block 305 is slidably connected in the receiving groove 304, and a second spring 306 is connected between the second positioning block 305 and the insertion rod 302 for resetting the second positioning block 305; A positioning ring 303 is rotatably connected to the outer side of the insertion rod 302 at a position corresponding to the second positioning block 305. The positioning ring 303 is provided with a symmetrically arranged second positioning groove 307 at a position corresponding to the second positioning block 305. The second positioning block 305 is inserted into the second positioning groove 307. The second positioning block 305 cooperates with the positioning ring 303 to connect and fix the adjacent first rotating rod 301. The second positioning block 305 is connected to a side away from the first rotating rod 301 with a second shift block 308, and the insertion block 21 is provided with a symmetrically arranged second movable groove 309 at a position corresponding to the second shift block 308. The second shift block 308 is slidably connected in the second movable groove 309, and the second shift block 308 is used to move the position of the second positioning block 305 so that the second positioning block 305 is moved out of the second positioning groove 307, thereby causing the insertion rod 302 and the positioning ring 303 to lose fixation, thereby causing the adjacent first rotating rods 301 to lose connection.

[0036] After the first locking nut 306 is engaged, the locking nut 306 is engaged with the locking nut 307, and the locking nut 307 is engaged with the locking nut 307. When it is necessary to disconnect the connection between adjacent first rotating rods 301, the two second rotating rods are pinched to make the two second rotating rods slide in the second movable groove 309. The sliding of the second rotating rod drives the second positioning block 305 to slide into the storage groove 304, and the second positioning block 305 is moved out of the second positioning groove 307. At this time, the fixation between the insertion rod 302 and the positioning ring 303 is lost. The connection between the adjacent first rotating rods 301 can be disconnected by removing the positioning ring 303 from the insertion rod 302 and removing the insertion rod 302 from between the adjacent first rotating rods 301. It is more convenient to connect and disconnect the adjacent first rotating rods 301, and the operation is simple and quick, which can improve efficiency.

[0037] The two first rotating rods 301 close to the mounting plate 11 are rotatably connected to the second rotating rod 31 and the third rotating rod 33 respectively. The connection mode between the first rotating rod 301 and the second rotating rod 31 and the first rotating rod 301 and the third rotating rod 33 is the same as the connection mode between adjacent first rotating rods 301.

[0038] One end of the second rotating rod 31 away from the first rotating rod 301 is connected to the mounting plate 11 through a positioning seat 32; One end of the third rotating rod 33 away from the first rotating rod 301 is rotatably connected with a threaded sleeve 34, and a screw rod 35 is connected to the position corresponding to the threaded sleeve 34 between the mounting plates 11 through a bearing, and the threaded sleeve 34 is threadedly connected to the outer side of the screw rod 35. The screw rod 35 rotates and cooperates with the threaded sleeve 34 to drive the first rotating rod 301 to expand or contract, so that the position between adjacent first connecting blocks 2 can be evenly adjusted to keep the distance between adjacent first connecting blocks 2 consistent; A through hole 204 is provided at the position of the first connection block 2 and the second connection block 201 corresponding to the screw rod 35. The diameter of the through hole 204 is larger than the diameter of the screw rod 35 to prevent the first connection block 201 and the second connection block 201 from affecting the expansion or contraction of the first rotating rod 301. The positioning seat 32, the positioning rod 3 and the threaded sleeve 34 are on the same horizontal line. Through this arrangement, the first rotating rod 301, the second rotating rod 31 and the third rotating rod 33 can obtain the maximum deployment range; One end of the screw rod 35 is connected to a motor 37, which is mounted on the mounting plate 11 through a transverse plate. The motor 37 is used to drive the screw rod 35 to rotate; The outer sides of the two lead screws 35 close to the motor 37 are respectively connected with sprockets 371 , and a chain 373 is meshed between the two sprockets 371 . Through the cooperation between the sprockets 371 and the chain 373 , the two lead screws 35 can be driven to rotate synchronously under the drive of the motor 37 .

[0039] During specific use, the two ends of the steel bar are respectively placed in the corresponding arc groove 202, and one of the screw rods 35 is driven to rotate by the motor 37. With the cooperation of the sprocket 371 and the chain 373, the other screw rod 35 is rotated synchronously. During the rotation of the two screw rods 35, the threaded sleeve 34 will be driven to move outside the screw rod 35. During the movement of the threaded sleeve 34, the third rotating rod, the first rotating rod 301 and the second rotating rod 31 will be pulled or pushed in turn, so that the first rotating rod 301 is expanded or contracted. The expansion or contraction of the first rotating rod 301 drives the first connecting block 2 or the second connecting block 201 to adjust the position, and when adjusting, the distance between adjacent first connecting blocks 2 is kept consistent, so that the adjacent first connecting blocks 2 are adjusted equidistantly, so that the steel bars can be adjusted equidistantly.

[0040] A placement groove 4 is provided above the mounting plate 11 near the support rod 36, and a clamping plate 41 is placed in the placement groove 4. The clamping plate 41 cooperates with the first connecting block 2 and the second connecting block 201 to clamp and position the steel bars to prevent the steel bars from shifting during pouring. A quick-action clamp 42 is installed on the upper surface of the mounting plate 11 at a position corresponding to the clamping plate 41 for clamping the clamping plate 41 .

[0041] Working principle: According to the load requirements, the number of steel bars placed inside the precast concrete slabs of the same size is different. At the same time, in order to ensure that the load bearing capacity of each position of the precast concrete slab is the same, the steel bars are placed equidistantly. Before making the precast concrete slab, according to the number of steel bars that need to be placed, the same number of first connecting blocks 2 and second connecting blocks 201 are correspondingly set at both ends of the steel bars. At this time, the missing first connecting blocks 2 and second connecting blocks 201 need to be installed on the outside of the support rod 36, or the excess first connecting blocks 2 and second connecting blocks 201 need to be removed from the outside of the support rod 36.

[0042] When installing or removing the first connecting block 2 and the second connecting block 201 (in order to prevent the clamping plate 41 from affecting the installation or removal, the clamping plate 41 needs to be placed elsewhere), disconnect the first rotating rod 301 from the third rotating rod 33. If the first connecting block 2 and the second connecting block 201 are installed, the motor 37 is driven to make the screw rod 35 drive the threaded sleeve 34 away from the first connecting block 2, and the first connecting block 2 and the second connecting block 201 are placed on the outside of the support rod 36 respectively, and are fixedly connected with the first positioning block 24 through the insert block 21, and supported by the support rod 36. After the first connecting block 2 and the second connecting block 201 are connected to the outside of the support rod 36, the motor 37 is driven again to make the screw rod 35 drive the threaded sleeve 34 close to the first connecting block 2. After approaching, the first rotating rod 301 close to the third rotating rod 33 is connected to the third rotating rod 33, and the adjacent first rotating rods 301 are connected at the same time, thereby completing the addition of the first connecting block 2 and the second connecting block 201.

[0043] If the first connecting block 2 and the second connecting block 201 are removed, the adjacent first rotating rods 301 on the first connecting block 2 and the second connecting block 201 that need to be removed are disconnected. After disconnection, the extra first connecting block 2 and the second connecting block 201 are removed from the outside of the support rod 36. After removal, the driving motor 37 makes the screw rod 35 drive the threaded sleeve 34 to approach the first connecting block 2. After approaching, the first rotating rod 301 close to the third rotating rod 33 is connected to the third rotating rod 33, thereby completing the removal of the first connecting block 2 and the second connecting block 201.

[0044] After the first connecting block 2 and the second connecting block 201 are added or removed, the two ends of the steel bar are placed in the arc groove 202 corresponding to the first connecting block 2 and the second connecting block 201. After placement, one of the screw rods 35 is driven to rotate by the motor 37, and the other screw rod 35 is rotated synchronously with the cooperation of the sprocket 371 and the chain 373. During the rotation of the two screw rods 35, the threaded sleeve 34 will be driven to move outside the screw rod 35. During the movement of the threaded sleeve 34, the third rotating rod, the first rotating rod 301 and the second rotating rod 31 will be pulled in turn, so that the first rotating rod 301 is unfolded. The unfolding of the first rotating rod 301 drives the first connecting block 2 or the second connecting block 201 to adjust the position, and when adjusting, the adjacent first connecting blocks 2 can be adjusted equidistantly. The operation is simple, the operation time is reduced, and the work efficiency is improved.

[0045] In actual use, the first connecting block 2 and the second connecting block 201 can be added or removed according to the number of steel bars. After adding or removing the first connecting block 2 and the second connecting block 201, the steel bars can also be adjusted equidistantly without replacing the casting mold, thereby improving adaptability and reducing costs.

[0046] When precast concrete slabs are manufactured, transverse and longitudinal reinforcements need to be placed. This scheme only shows the device in one direction. By setting the same device in another direction, the placement and adjustment of transverse and longitudinal reinforcements can be met. When setting the device in another direction, the height needs to be set according to the diameter of the reinforcement, so that the device in one direction is always higher than the device in the other direction by the height of one reinforcement diameter.

[0047] After the position of the steel bars is adjusted, the clamp 41 is placed in the placement groove 4, and the clamp 41 is pressed by the quick clamp 42. The clamp 41 transfers the pressure to the steel bars, thereby clamping and positioning the steel bars between the first connecting block 2 and the second connecting block 201 and the clamp 41, so that the steel bars are stabilized and prevented from being offset or collapsed in the middle due to the weight of the concrete when pouring concrete.

[0048] When the precast concrete slab needs to be demoulded after being formed, the demoulding work can be carried out by removing the clamping plate 41 from the placement groove 4, and the clamping plate 41 will not affect the demoulding work.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precast concrete reinforcement clamping and positioning device, comprising a symmetrically arranged bottom plate (1), The mounting plate (11) is symmetrically arranged on the upper surface of the base plate (1), It is characterized in that A plurality of evenly arranged first connection blocks (2) are provided between the mounting plates (11); a second connection block (201) is installed on one side of the first connection block (2); the first connection block (2) and the second connection block (201) have the same shape; arc-shaped grooves (202) are provided on the tops of the first connection block (2) and the second connection block (201); A symmetrically arranged support rod (36) is connected between the mounting plates (11) at positions corresponding to the first connecting block (2) and the second connecting block (201); a symmetrically arranged sliding groove (203) is provided at positions corresponding to the support rod (36) of the first connecting block (2) and the second connecting block (201); the support rod (36) is slidably connected in the sliding groove (203); The middle part of the second connecting block (201) away from the first connecting block (2) is connected to a positioning rod (3), the middle part of the positioning rod (3) is rotatably connected to a first rotating rod (301), and the corresponding ends of adjacent first rotating rods (301) are connected to each other. The two first rotating rods (301) close to the mounting plate (11) are rotatably connected to the second rotating rod (31) and the third rotating rod (33), respectively; one end of the second rotating rod (31) away from the first rotating rod (301) is connected to the mounting plate (11) via a positioning seat (32); One end of the third rotating rod (33) away from the first rotating rod (301) is rotatably connected to a threaded sleeve (34); a screw rod (35) is connected to a position between the mounting plates (11) corresponding to the threaded sleeve (34) via a bearing; and the threaded sleeve (34) is threadedly connected to the outside of the screw rod (35).

2. A precast concrete reinforcement clamping and positioning device according to claim 1, characterized in that: The positioning seat (32), the positioning rod (3) and the threaded sleeve (34) are located on the same horizontal line.

3. A precast concrete reinforcement clamping and positioning device according to claim 2, characterized in that: A through hole (204) is provided at a position of the first connecting block (2) and the second connecting block (201) corresponding to the screw rod (35), and the diameter of the through hole (204) is greater than the diameter of the screw rod (35).

4. A precast concrete reinforcement clamping and positioning device according to claim 3, characterized in that: The end of one of the lead screws (35) is connected to a motor (37), and the outer sides of the ends of the two lead screws (35) close to the motor (37) are respectively connected to sprocket wheels (371), and a chain (373) is meshed between the two sprocket wheels (371).

5. The precast concrete reinforcement clamping and positioning device according to claim 4, characterized in that: The second connection block (201) is connected to a side of the first connection block (2) that is close to the first connection block (2) with symmetrically arranged plug blocks (21); the first connection block (2) is provided with symmetrically arranged slots (22) at positions corresponding to the plug blocks (21); the plug blocks (21) are plugged into the slots (22); A first positioning groove (23) is provided in the middle of the plug block (21); a hollow groove (251) is provided inside the first connection block (2) at a position corresponding to the plug block (21); a first positioning block (24) is provided in the hollow groove (251) at a position corresponding to the first positioning groove (23); the first positioning block (24) is plugged into the first positioning groove (23); A pressure plate (25) is connected to one side of the two first positioning blocks (24) away from the insert block (21); the pressure plate (25) is located in the hollow groove (251); and symmetrically arranged first springs (26) are connected between the pressure plate (25) and the first connecting block (2). A first shift block (27) is connected to a side of the pressure plate (25) away from the second connection block (201), a first movable groove (28) is formed in the first positioning block (24) at a position corresponding to the first shift block (27), and the first shift block (27) is slidably connected in the first movable groove (28).

6. A precast concrete reinforcement clamping and positioning device according to claim 5, characterized in that: The end of the insert block (21) is arc-shaped, and the end of the first positioning block (24) away from the pressing plate (25) is arc-shaped.

7. A precast concrete reinforcement clamping and positioning device according to claim 6, characterized in that: A T-shaped insertion rod (302) is rotatably connected between corresponding ends of adjacent first rotating rods (301), and symmetrically arranged receiving grooves (304) are provided at the ends of the insertion rod (302). A second positioning block (305) is slidably connected in the receiving groove (304), and a second spring (306) is connected between the second positioning block (305) and the insertion rod (302). A positioning ring (303) is rotatably connected to the outer side of the insertion rod (302) at a position corresponding to the second positioning block (305); the positioning ring (303) is provided with symmetrically arranged second positioning grooves (307) at a position corresponding to the second positioning block (305); the second positioning block (305) is inserted into the second positioning groove (307). A second shifting block (308) is connected to a side of the second positioning block (305) away from the first rotating rod (301), and a symmetrically arranged second movable groove (309) is provided on the insertion block (21) at a position corresponding to the second shifting block (308), and the second shifting block (308) is slidably connected in the second movable groove (309).

8. The precast concrete reinforcement clamping and positioning device according to claim 7, characterized in that: The connection mode between the first rotating rod (301) and the second rotating rod (31) and the first rotating rod (301) and the third rotating rod (33) is the same as the connection mode between adjacent first rotating rods (301).

9. A precast concrete reinforcement clamping and positioning device according to claim 8, characterized in that: A placement groove (4) is provided above the mounting plate (11) near the support rod (36), a clamp (41) is placed in the placement groove (4), and a quick clamp (42) is installed on the upper surface of the mounting plate (11) at a position corresponding to the clamp (41).

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