A precast component hoisting and positioning device

Abstract

The present application belongs to the prefabricated component hoisting technical field, specifically a prefabricated component hoisting positioning device, comprising: the first clamp fixed in the four corners of the base; by setting the first clamp, the second clamp and the auxiliary positioning assembly, under the connection of the auxiliary positioning assembly, the prefabricated column and the base can be controlled to be in the corresponding state all the time, until the bottom hole of the prefabricated column is inserted and matched with the steel bar on the base, then the crane is controlled to continue to lower the prefabricated column until the bottom surface of the prefabricated column is attached to the surface of the base, the installation of the prefabricated column is completed; in the process of hoisting and installing the prefabricated column, the first clamp, the second clamp and the auxiliary positioning assembly can realize the alignment purpose in the lowering process of the prefabricated column, that is, after the prefabricated column is hoisted to the directly above of the base, the prefabricated column and the base always keep the corresponding state, without the need of construction personnel to assist in completing the insertion and matching of the bottom hole of the prefabricated column and the steel bar, the installation time of the prefabricated column is saved, and the construction efficiency of the prefabricated column is improved.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated component hoisting technology, specifically a prefabricated component hoisting and positioning device. Background Technology

[0002] Precast components are concrete components, such as beams, slabs, and columns, that are pre-designed and manufactured in a factory. The use of precast components is quite common in modern building construction. When precast components arrive on site, they need to be lifted by a crane to the installation position, aligned with the pre-cast base, and then the connection parts are filled with concrete grout to complete the installation of the precast components.

[0003] Taking precast columns as an example, when installing precast columns on site, a crane is used to lift them to the installation position. By lowering the precast column, the construction personnel make fine adjustments to the position of the precast column so that the opening at the bottom of the precast column corresponds to the reinforcing steel on the base. After the lifting is completed, the reinforcing steel can be accurately inserted into the precast column, and only then can the next step of pouring be carried out. When making fine adjustments to the position of the precast column during lifting, manual assistance is usually used. However, the reliance on manual labor on the lifting site greatly affects the installation efficiency. To address this, an existing application with application number 201911053808.5 discloses a millimeter-level precision positioning system and method for the lifting process of precast columns, which uses a flared end limiting plate, a grout-blocking template, a center adjusting pad, a corbel, and a jack. This invention sets a flared end limiting plate at the splicing surface between the foundation and the precast column, allowing the precast column to fall quickly and smoothly along the flared end limiting plate during the lifting process, and smoothly connect with the reinforcing steel reserved in the foundation, thereby completing the lifting of the precast column quickly and accurately.

[0004] In summary, existing technologies use flared-mouth limiting plates to guide and limit the precast columns during their descent, allowing them to fall quickly and accurately into the area surrounding the base. This is then combined with manual alignment of the holes to achieve the connection of the precast columns. However, the installation process is slow in these technologies. The fundamental reason is the difficulty in quickly completing the connection between the bottom opening of the precast column and the reinforcing steel. Even with flared-mouth limiting plates, a gap exists between the precast column and the flared opening for descent, making it impossible to ensure the connection between the bottom opening and the reinforcing steel can be achieved quickly. Manual confirmation or fine-tuning is still required, thus failing to significantly improve the installation efficiency of precast columns.

[0005] Therefore, the present invention provides a prefabricated component hoisting and positioning device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a precast component hoisting and positioning device according to the present invention, comprising:

[0008] The first clamp is fixed at the four corners of the base;

[0009] A second clamp is fixed to the bottom of the precast column, and the first clamp has the same structure as the second clamp;

[0010] An auxiliary positioning component for connecting the first clamp and the second clamp;

[0011] The base is fixed with steel bars, and the first clamp and the second clamp pass through the steel bars; the auxiliary positioning component includes multiple first hinge arms and second hinge arms; the tops of the multiple first hinge arms are hinged to the bottom center of the second clamp, and the bottoms of the multiple second hinge arms are hinged to the top center of the first clamp; the bottoms of the first hinge arms are hinged to the tops of the second hinge arms.

[0012] Preferably, the auxiliary positioning component further includes a connecting part; two connecting parts are provided, and are respectively hinged to the top of a plurality of first hinge arms and the bottom of a plurality of second hinge arms; the two connecting parts are respectively inserted into and engaged with the first clamp and the second clamp.

[0013] Preferably, the first clamp includes a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are cross-shaped and snapped into the four corners of the base; the first connecting plate and the second connecting plate are stacked vertically; the first clamp also includes an adjustment component; the adjustment component is fixedly connected to both ends of the first connecting plate and the second connecting plate respectively; a connecting seat is fixedly connected to the center of the first connecting plate, and the connecting part is inserted into the center of the connecting seat.

[0014] Preferably, the adjustment assembly includes a first clamping plate and a second clamping plate; the first clamping plate and the second clamping plate are both connected to the end of the first connecting plate or the second connecting plate by a screw; the ends of the first clamping plate and the second clamping plate are provided with clamping pieces for engaging the four corners of the base.

[0015] Preferably, the side wall of the second clamping plate is also fixedly connected to a support plate, and the end of the support plate is threadedly connected to a limiting rod; the limiting rod passes through the auxiliary positioning assembly and is used to limit the auxiliary positioning assembly; the limiting rod is arranged on the outside of the base.

[0016] Preferably, the adjacent ends of the first hinge arm and the second hinge arm are provided with oval grooves, and the limiting rod passes through the oval grooves.

[0017] Preferably, a second spring is sleeved on the limiting rod, and the two ends of the second spring abut against the second hinge arm and the support plate, respectively.

[0018] Preferably, the inner sides of the first clamping plate and the second clamping plate are provided with clearance grooves to avoid the reinforcing bars on the base; the reinforcing bars pass through the clearance grooves.

[0019] Preferably, a trigger switch is fixedly connected to the second hinge arm, and a push plate is provided at the output end of the trigger switch; the trigger switch is arranged coaxially with the oblong groove; the trigger switch is connected to the alarm via a wire; the alarm is fixedly connected to the first connecting plate.

[0020] Preferably, the first hinge arm, the second hinge arm, and the connecting part are all fixedly connected by pins; the first hinge arm and the second hinge arm are both located between two adjacent reinforcing bars.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The precast component hoisting and positioning device of the present invention, by setting a first clamp, a second clamp, and an auxiliary positioning component, can control the precast column and the base to always be in a corresponding state until the bottom opening of the precast column is inserted and matched with the reinforcing bar on the base. At this time, the construction personnel can sequentially remove the auxiliary positioning component, the first clamp, and the second clamp, and then control the crane to continue to lower the precast column until the bottom surface of the precast column is in contact with the surface of the base, thus completing the installation of the precast column. During the hoisting and installation of the precast column, the first clamp, the second clamp, and the auxiliary positioning component can achieve the purpose of alignment during the lowering of the precast column. That is, after the precast column is hoisted to the top of the base, the precast column and the base are always in a corresponding state, without the need for construction personnel to assist in completing the insertion and matching of the bottom opening of the precast column with the reinforcing bar, saving the installation time of the precast column and improving the construction efficiency of the precast column.

[0023] 2. The precast component hoisting and positioning device of the present invention includes a trigger switch. When in use, the auxiliary positioning component folds under pressure, causing the limiting rod to slide passively from one end of the oblong groove to the other. During this process, the limiting rod presses against the push plate and activates the trigger switch. The trigger switch can then electrically activate the alarm, indicating that the bottom opening of the precast column has been completed with the reinforcing steel bar. The first clamp, the second clamp, and the auxiliary positioning component can then be removed, and the precast column can continue to be lowered until it fits against the base, completing the assembly of the precast column and the base. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a first perspective view of the present invention;

[0026] Figure 2 This is the second perspective view of the present invention.

[0027] Figure 3 This is a partial perspective view of the present invention;

[0028] Figure 4 This is a diagram showing the fit between the first clamp and the base in this invention;

[0029] Figure 5 yes Figure 4 Side view;

[0030] Figure 6 This is a diagram showing the interaction between the auxiliary positioning component and the limiting rod in this invention;

[0031] Figure 7 This is a top view of the first clamp in this invention;

[0032] Figure 8 yes Figure 7 Enlarged diagram of position I in the diagram;

[0033] Figure 9 This is a perspective view of the trigger switch and alarm in this invention;

[0034] In the diagram: 1. Precast column; 2. Second clamp; 3. First clamp; 31. First clamping plate; 32. First connecting plate; 33. Second connecting plate; 34. Clamping piece; 35. Second clamping plate; 36. Support plate; 37. Limiting rod; 38. Second spring; 39. Screw; 4. Auxiliary positioning assembly; 41. First hinge arm; 42. Second hinge arm; 43. Oval groove; 44. Connecting part; 5. Base; 51. Reinforcing bar; 6. Connecting seat; 7. Alarm; 8. Trigger switch; 81. Push plate. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 2 As shown in the figure, a precast component hoisting and positioning device according to an embodiment of the present invention includes:

[0037] The first clamp 3 is fixed at the four corners of the base 5;

[0038] The second clamp 2 is fixed to the bottom of the precast column 1, and the first clamp 3 has the same structure as the second clamp 2;

[0039] Auxiliary positioning component 4 for connecting the first clamp 3 and the second clamp 2;

[0040] A steel bar 51 is fixedly connected to the base 5, and the first clamp 3 and the second clamp 2 pass through the steel bar 51; the auxiliary positioning component 4 includes a plurality of first hinge arms 41 and second hinge arms 42; the top of the plurality of first hinge arms 41 is hinged to the bottom center of the second clamp 2, and the bottom of the plurality of second hinge arms 42 is hinged to the top center of the first clamp 3; the bottom of the first hinge arm 41 is hinged to the top of the second hinge arm 42.

[0041] When using the precast component hoisting and positioning device provided by this invention, the first clamp 3 is first installed on the base 5 to be installed. When the crane hoists the precast column 1 to the vicinity of the base 5 to be installed, the construction personnel quickly attach the second clamp 2 to the bottom of the precast column 1. After manual fine-tuning, the auxiliary positioning component 4 is connected to the first clamp 3 and the second clamp 2. At this time, after fine-tuning, the precast column 1, which is still in the hoisting state, corresponds to the base 5, and the center line of the precast column 1 and the center line of the base 5 are on the same axis. At this time, the crane is controlled to slowly lower the precast column 1. With the connection of the auxiliary positioning component 4, the precast column 1 and the base 5 can be kept in an aligned state until the bottom of the precast column 1 is opened. When the precast column 1 is inserted and connected to the reinforcing bar 51 on the base 5, the construction personnel will sequentially remove the auxiliary positioning component 4, the first clamp 3, and the second clamp 2, and then control the crane to continue lowering the precast column 1 until the bottom surface of the precast column 1 is in contact with the surface of the base 5, thus completing the installation of the precast column 1. During the hoisting and installation of the precast column 1, the first clamp 3, the second clamp 2, and the auxiliary positioning component 4 can achieve the purpose of alignment during the lowering process of the precast column 1. That is, after the precast column 1 is hoisted to the top of the base 5, the precast column 1 and the base 5 will always remain aligned. No additional construction personnel are needed to assist in completing the insertion and connection of the bottom opening of the precast column 1 with the reinforcing bar 51, saving the installation time of the precast column 1 and improving the construction efficiency of the precast column 1.

[0042] In the initial stage, the first hinge arm 41 and the second hinge arm 42 are in an open state, that is, the distance between the first clamp 3 and the second clamp 2 is greater than the length of the steel bar 51. When the bottom opening of the precast column 1 is inserted and connected with the steel bar 51 on the base 5, the first hinge arm 41 and the second hinge arm 42 are folded until the distance between the first clamp 3 and the second clamp 2 is less than the length of the steel bar 51.

[0043] like Figures 3 to 6 As shown, the auxiliary positioning component 4 also includes a connecting part 44; two connecting parts 44 are provided, and are respectively hinged to the top of a plurality of first hinge arms 41 and the bottom of a plurality of second hinge arms 42; the two connecting parts 44 are respectively inserted into and engaged with the first clamp 3 and the second clamp 2.

[0044] In the precast component hoisting and positioning device provided by this invention, the auxiliary positioning component 4 is hinged at the top of the first hinge arm 41 and the bottom of the second hinge arm 42 to the two connecting parts 44 respectively. That is, the auxiliary positioning component 4 can only change its axial stroke, and any movement deviating from the axial direction will cause it to jam. By setting a reflective photoelectric sensor on the opposite surface of the connecting parts 44, that is, the transmitting end and the receiving end are respectively set on the opposite surface of the two connecting parts 44, when the reflective photoelectric sensor alarms, it indicates that the two connecting parts 44 are not aligned. At this time, it means that the precast column 1 is about to or has already shifted during the falling process. Then, the construction personnel make fine adjustments to ensure that the bottom of the precast column 1 is parallel to the base 5. By using the connecting parts 44 to carry the reflective photoelectric sensor, it can be ensured that the precast column 1 does not deflect or shift axially during the installation process.

[0045] like Figures 7 to 8 As shown, the first clamp 3 includes a first connecting plate 32 and a second connecting plate 33, and the first connecting plate 32 and the second connecting plate 33 are cross-shaped and snapped into the four corners of the base 5; the first connecting plate 32 and the second connecting plate 33 are stacked vertically; the first clamp 3 also includes an adjustment component; the adjustment component is fixed to both ends of the first connecting plate 32 and the second connecting plate 33 respectively; a connecting seat 6 is fixed to the center of the first connecting plate 32, and the connecting part 44 is inserted into the center of the connecting seat 6.

[0046] In the prior art, a flared limiting plate is used. During the lowering of the precast column 1, if the center line of the precast column 1 deviates from the center line of the base 5, the precast column 1 will squeeze the flared limiting plate, causing it to deform and fail. To address the above problem, the first clamp 3 in the precast component hoisting and positioning device provided by the present invention adopts a cross-shaped arrangement of the first connecting plate 32 and the second connecting plate 33. With the help of the adjustment component, it can be stably clamped at the four corners of the base 5. Similarly, the second clamp 2 can also be stably clamped at the four corners of the precast column 1 without shifting during movement. When the first clamp 3 is subjected to the pressure transmitted by the auxiliary positioning component 4, it will not shift away from the center line of the base 5, thus ensuring that the center lines of the precast column 1 and the base 5 always coincide.

[0047] like Figures 7 to 8 As shown, the adjustment assembly includes a first clamping plate 31 and a second clamping plate 35; the first clamping plate 31 and the second clamping plate 35 are both connected to the ends of the first connecting plate 32 or the second connecting plate 33 through screws 39; the ends of the first clamping plate 31 and the second clamping plate 35 are provided with clamping pieces 34 for engaging the four corners of the base 5.

[0048] In the precast component hoisting and positioning device provided by the present invention, in order to avoid the steel bars 51 on the base 5, the first clamping plate 31 can be pre-fixed with the first connecting plate 32 or the second connecting plate 33, and then the whole assembly is sleeved on the four corners of the base 5. Then the second clamping plate 35 is fixed with the first connecting plate 32 or the second connecting plate 33. By setting the clamping piece 34, after the adjustment component is assembled, the clamping piece 34 can be used to clamp the four corners of the base 5 to achieve stable clamping of the first clamping piece 3 and the base 5. When subjected to pressure, it will not produce displacement deviating from the center line of the base 5. After the hole is opened at the bottom of the precast column 1 to cooperate with the steel bars 51, the first clamping piece 3 can be separated from the base 5 by disassembly without affecting the further alignment work of the precast column 1 and the base 5.

[0049] like Figures 7 to 8 As shown, a support plate 36 is also fixedly connected to the side wall of the second clamping plate 35, and a limit rod 37 is threadedly connected to the end of the support plate 36; the limit rod 37 passes through the auxiliary positioning assembly 4 and is used to limit the auxiliary positioning assembly 4; the limit rod 37 is arranged on the outside of the base 5.

[0050] In another embodiment of the present invention, the support plate 36 in the precast component hoisting and positioning device is mainly used to support the limiting rod 37. The limiting rod 37 is screwed into the support plate 36 by a threaded connection and stands vertically on the support plate 36. When the auxiliary positioning component 4 is deformed by the pressure generated during the lowering of the precast column 1, the first hinge arm 41 and the second hinge arm 42 can pass through the limiting rod 37 to prevent the first hinge arm 41 and the second hinge arm 42 from deflecting in the horizontal direction. The limiting rod 37 is fixed to the outside of the base 5 by the support plate 36 and does not affect the lowering action of the precast column 1.

[0051] like Figure 6 As shown, the adjacent ends of the first hinge arm 41 and the second hinge arm 42 are provided with oval grooves 43, and the limiting rod 37 passes through the oval grooves 43.

[0052] When the auxiliary positioning component 4 in the precast component hoisting and positioning device provided by the present invention is used, when the auxiliary positioning component 4 is subjected to pressure and folds, the first hinge arm 41 and the second hinge arm 42 move closer to each other, so that the limiting rod 37 is passively moved from one end of the oval groove 43 to the other end. By using the limiting rod 37 to slide in the oval groove 43, the first hinge arm 41 and the second hinge arm 42 are limited, preventing the first hinge arm 41 and the second hinge arm 42 from being deflected in the horizontal direction due to pressure, which would affect the alignment of the precast column 1 and the base 5.

[0053] like Figure 6 As shown, a second spring 38 is sleeved on the limiting rod 37, and the two ends of the second spring 38 abut against the second hinge arm 42 and the support plate 36 respectively.

[0054] In the prefabricated component hoisting and positioning device provided by the present invention, the second spring 38 supports the second hinge arm 42 during use, so that the first hinge arm 41 and the second hinge arm 42 are in an open state in the initial stage. When the auxiliary positioning component 4 is subjected to pressure, the first hinge arm 41 and the second hinge arm 42 fold, and the distance between the two connecting parts 44 is closer. The second hinge arm 42 will also deflect downward around the bottom connecting part 44. At this time, the second hinge arm 42 squeezes the second spring 38, and the second spring 38 realizes the elastic buffering of the second hinge arm 42.

[0055] like Figure 7 As shown, the inner sides of the first clamping plate 31 and the second clamping plate 35 are provided with clearance grooves to avoid the steel bars 51 on the base 5; the steel bars 51 pass through the clearance grooves.

[0056] When the precast component hoisting and positioning device provided by the present invention is used, the clearance groove is arranged to avoid the reinforcing bar 51, and the first clamping plate 31 and the second clamping plate 35 are respectively connected to the first connecting plate 32 and the second connecting plate 33 to facilitate the subsequent disassembly and assembly of the first clamp 3, and to prevent the top of the reinforcing bar 51 from being inserted into the bottom of the precast column 1, thus making it impossible to remove the first clamp 3.

[0057] like Figure 9 As shown, a trigger switch 8 is fixedly connected to the second hinge arm 42, and a push plate 81 is provided at the output end of the trigger switch 8; the trigger switch 8 is arranged coaxially with the oblong groove 43; the trigger switch 8 is connected to the alarm 7 via a wire; the alarm 7 is fixedly connected to the first connecting plate 32.

[0058] When the trigger switch 8 in the precast component hoisting and positioning device provided by the present invention is in use, the auxiliary positioning component 4 will fold and change under pressure, and the limiting rod 37 can be passively slid from one end of the oval groove 43 to the other end. During this process, the limiting rod 37 will squeeze the push plate 81 and activate the trigger switch 8. At this time, the alarm 7 can be electrically activated through the trigger switch 8. This indicates that the bottom hole of the precast column 1 and the steel bar 51 have been connected and fitted. The first clamp 3, the second clamp 2 and the auxiliary positioning component 4 can be removed, and the precast column 1 can continue to be lowered until the precast column 1 and the base 5 are attached, thus completing the assembly of the precast column 1 and the base 5.

[0059] like Figure 6 As shown, the first hinge arm 41, the second hinge arm 42 and the connecting part 44 are all fixedly connected by pins; the first hinge arm 41 and the second hinge arm 42 are both located between two adjacent reinforcing bars 51.

[0060] In the prefabricated component hoisting and positioning device provided by the present invention, the pin is used to connect the first hinge arm 41, the second hinge arm 42 and the connecting part 44. When the auxiliary positioning component 4 is removed, the pin can be pulled out to complete the disassembly of the connecting part 44 from the first hinge arm 41 and the second hinge arm 42. The first hinge arm 41 and the second hinge arm 42 are then placed between the two reinforcing bars 51, so that the auxiliary positioning component 4 has enough space to perform a folding action.

[0061] Working principle: The installation process of precast column 1 is slow in the existing technology. The fundamental reason is that it is difficult to quickly complete the insertion and connection between the bottom opening of precast column 1 and the reinforcing bar 51. Even if a flared mouth limiting plate is used, the gap between the precast column 1 and the flared mouth is required for it to fall. Therefore, it is still impossible to ensure that the insertion and connection between the bottom opening of precast column 1 and the reinforcing bar 51 can be achieved in a short time. That is, manual confirmation or fine-tuning is still required. Therefore, it is still impossible to significantly improve the installation efficiency of precast column 1.

[0062] When using the precast component hoisting and positioning device provided by this invention, the first clamp 3 is first installed on the base 5 to be installed. When the crane lifts the precast column 1 to near the base 5, the construction personnel quickly attach the second clamp 2 to the bottom of the precast column 1. After manual fine-tuning, the auxiliary positioning component 4 is connected to the first clamp 3 and the second clamp 2. At this time, after fine-tuning, the precast column 1, which is still in the hoisting state, corresponds to the base 5, and the center line of the precast column 1 and the center line of the base 5 are on the same axis. Then, the crane is controlled to slowly lower the precast column 1. With the connection of the auxiliary positioning component 4, the precast column 1 and the base 5 can be controlled to always be in a corresponding state until the bottom opening of the precast column 1 is inserted and matched with the steel bar 51 on the base 5. At this time, the construction personnel remove the auxiliary positioning component 4, the first clamp 3, and the second clamp 2 in sequence, and then control the crane to continue lowering the precast column 1. The precast column 1 is fabricated until its bottom surface is in contact with the surface of the base 5, thus completing the installation of the precast column 1. During the hoisting and installation of the precast column 1, the first clamp 3, the second clamp 2, and the auxiliary positioning component 4 are used to achieve alignment during the lowering process of the precast column 1. That is, after the precast column 1 is hoisted to the top of the base 5, the precast column 1 and the base 5 are always in a corresponding state, eliminating the need for construction personnel to assist in completing the insertion and connection of the bottom opening of the precast column 1 with the reinforcing bar 51, saving the installation time of the precast column 1 and improving the construction efficiency of the precast column 1. In the initial stage, the first hinge arm 41 and the second hinge arm 42 are in an open state, that is, the distance between the first clamp 3 and the second clamp 2 is greater than the length of the reinforcing bar 51. When the bottom opening of the precast column 1 is inserted and connected with the reinforcing bar 51 on the base 5, the first hinge arm 41 and the second hinge arm 42 are folded, and the distance between the first clamp 3 and the second clamp 2 is less than the length of the reinforcing bar 51.

[0063] When in use, the top and bottom of the first hinge arm 41 and the second hinge arm 42 are hinged to the two connecting parts 44, respectively. That is, the auxiliary positioning component 4 can only change its axial stroke, and any movement deviating from the axial direction will cause it to jam. By setting a reflective photoelectric sensor on the opposite surface of the connecting parts 44, that is, the transmitter and receiver are respectively set on the opposite surface of the two connecting parts 44, when the reflective photoelectric sensor alarms, it indicates that the two connecting parts 44 are not parallel. At this time, it means that the precast column 1 is about to or has already eccentrically moved during the falling process. Then, the construction personnel make fine adjustments to ensure that the bottom of the precast column 1 is parallel to the base 5. By using the connecting parts 44 to carry the reflective photoelectric sensor, it can be ensured that the precast column 1 does not deflect or shift axially during the installation process. In the prior art, a flared limiting plate is used. During the lowering of the precast column 1, if the center line of the precast column 1 deviates from the center line of the base 5, the precast column 1 will squeeze the flared limiting plate, causing it to deform and fail. To address the above problem, the first clamp 3 in the precast component hoisting and positioning device provided by the present invention adopts a cross-shaped arrangement of the first connecting plate 32 and the second connecting plate 33. With the help of the adjustment component, it can be stably clamped at the four corners of the base 5. Similarly, the second clamp 2 can also be stably clamped at the four corners of the precast column 1 without shifting during movement. When the first clamp 3 is subjected to pressure transmitted by the auxiliary positioning component 4, it will not deviate from the center line of the base 5, thus ensuring that the center lines of the precast column 1 and the base 5 always coincide.

[0064] When the trigger switch 8 is in use, the auxiliary positioning component 4 will fold under pressure, and the limit rod 37 will be passively slid from one end of the oval groove 43 to the other end. During this process, the limit rod 37 will squeeze the push plate 81 and activate the trigger switch 8. At this time, the alarm 7 can be electrically activated through the trigger switch 8. This indicates that the bottom hole of the precast column 1 and the steel bar 51 have been connected and fitted. The first clamp 3, the second clamp 2 and the auxiliary positioning component 4 can be removed, and the precast column 1 can be lowered until the precast column 1 and the base 5 are attached, thus completing the assembly of the precast column 1 and the base 5.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precast component hoisting and positioning device, comprising: The first clamp (3) is fixed at the four corners of the base (5); The second clamp (2) is fixed to the bottom of the precast column (1), and the first clamp (3) has the same structure as the second clamp (2); Auxiliary positioning component (4) for connecting the first clamp (3) and the second clamp (2); Its features are: A steel bar (51) is fixedly connected to the base (5), and the first clamp (3) and the second clamp (2) pass through the steel bar (51); the auxiliary positioning component (4) includes a plurality of first hinge arms (41) and second hinge arms (42); the top of the plurality of first hinge arms (41) is hinged to the bottom center of the second clamp (2), and the bottom of the plurality of second hinge arms (42) is hinged to the top center of the first clamp (3); the bottom of the first hinge arm (41) is hinged to the top of the second hinge arm (42); The auxiliary positioning component (4) also includes a connecting part (44); two connecting parts (44) are provided and are respectively hinged to the top of a plurality of first hinge arms (41) and the bottom of a plurality of second hinge arms (42); the two connecting parts (44) are respectively inserted into and engaged with the first clamp (3) and the second clamp (2); The first clamp (3) includes a first connecting plate (32) and a second connecting plate (33), and the first connecting plate (32) and the second connecting plate (33) are cross-shaped and snapped into the four corners of the base (5); the first connecting plate (32) and the second connecting plate (33) are stacked on top of each other; the first clamp (3) also includes an adjustment component; the adjustment component is fixed to both ends of the first connecting plate (32) and the second connecting plate (33); a connecting seat (6) is fixed to the center of the first connecting plate (32), and the connecting part (44) is inserted into the center of the connecting seat (6); The adjustment assembly includes a first clamping plate (31) and a second clamping plate (35); the first clamping plate (31) and the second clamping plate (35) are both connected to the end of the first connecting plate (32) or the second connecting plate (33) by a screw (39); the ends of the first clamping plate (31) and the second clamping plate (35) are provided with clamping pieces (34) for engaging the four corners of the base (5); The second clamping plate (35) is also fixedly connected to a support plate (36) on its side wall, and the end of the support plate (36) is threadedly connected to a limiting rod (37); the limiting rod (37) passes through the auxiliary positioning assembly (4) and is used to limit the auxiliary positioning assembly (4); the limiting rod (37) is arranged on the outside of the base (5); The adjacent ends of the first hinge arm (41) and the second hinge arm (42) are provided with oval grooves (43), and the limiting rod (37) passes through the oval grooves (43).

2. The precast component hoisting and positioning device according to claim 1, characterized in that: The limiting rod (37) is fitted with a second spring (38), and the two ends of the second spring (38) are respectively pressed against the second hinge arm (42) and the support plate (36).

3. The precast component hoisting and positioning device according to claim 2, characterized in that: The inner sides of the first clamping plate (31) and the second clamping plate (35) are provided with clearance grooves to avoid the steel bars (51) on the base (5); the steel bars (51) pass through the clearance grooves.

4. The precast component hoisting and positioning device according to claim 3, characterized in that: A trigger switch (8) is fixedly connected to the second hinge arm (42), and a push plate (81) is provided at the output end of the trigger switch (8); the trigger switch (8) is arranged coaxially with the oval groove (43); the trigger switch (8) is connected to the alarm (7) via a wire; the alarm (7) is fixedly connected to the first connecting plate (32).

5. A precast component hoisting and positioning device according to claim 4, characterized in that: The first hinge arm (41), the second hinge arm (42), and the connecting part (44) are all fixedly connected by pins; the first hinge arm (41) and the second hinge arm (42) are both located between two adjacent steel bars (51).

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