Automatic aligning and locking device for assembly type building wallboard installation

The telescopic and adjustment components of the automatic alignment and locking device enable efficient and accurate installation of prefabricated building wall panels, solving the time-consuming, tedious, and deviation-prone manual alignment.

CN120684017APending Publication Date: 2025-09-23CHINA CONSTR THIRD ENG BUREAU GRP (ZHEJIANG) CO LTD
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Patent Information

Application Number
CN202510860317.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-25
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

When installing existing prefabricated building wall panels, manual alignment is time-consuming, tedious, and prone to deviations.

Method used

An automatic alignment and locking device is adopted, including a main support frame, a telescopic component, an electric telescopic rod and an adjustment component. Through the cooperation of the telescopic component and the adjustment component, automatic alignment and clamping of the building wall panels are achieved.

Benefits of technology

It improves the efficiency and accuracy of the installation of prefabricated building wall panels and reduces the tediousness and deviation of manual operations.

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Abstract

The invention belongs to the technical field of building wallboard installation, and discloses an automatic alignment locking device for assembly type building wallboard installation, which comprises a pair of main body support frames, and further comprises telescopic assemblies arranged at the two ends of the main body support frames and used for clamping a building wallboard; through cooperation of structures such as a second telescopic frame and a locking convex block, the position of a clamping jaw can be adjusted conveniently so as to adapt to the length of the wallboard, fixing of the second telescopic frame and the first telescopic frame by the locking convex block is relieved by pulling a pull rod at the top of the locking convex block, and a movable seat is pushed to drive the locking convex block to move, so that the wallboard can be conveniently clamped. When the alignment mechanism is used, the second telescopic frames at the two ends are pulled to move to proper positions, then the movable seat is pushed to reset, and the second telescopic frames are pushed to be folded inwards, so that the locking convex blocks are inserted into the positioning holes, and the length of the alignment mechanism is adjusted to the degree that the alignment mechanism is matched with the building wallboard.
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Description

Technical Field

[0001] The invention belongs to the technical field of building wall panel installation, and in particular to an automatic alignment locking device for installing assembled building wall panels. Background Art

[0002] Prefabricated building wall panels are the core components of industrialized buildings. They achieve efficient construction through factory prefabrication and on-site assembly. They can be applied to residential buildings, public buildings, industrial buildings, and building renovation projects. Factory prefabricated wall panels are directly assembled on-site, which reduces the amount of wet work compared to traditional masonry.

[0003] During the construction of prefabricated building wall panels, the alignment accuracy requirement needs to reach millimeter-level precision. Therefore, the existing assembly method is to align by manually controlling the lifting equipment. This method is time-consuming and cumbersome, and is prone to deviations. Therefore, an automatic alignment and locking device for the installation of prefabricated building wall panels is proposed. Summary of the Invention

[0004] In order to solve the problem in the above background technology that manual alignment is time-consuming, tedious, and prone to deviation, the present invention provides an automatic alignment and locking device for installing prefabricated building wall panels.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic alignment and locking device for installing assembled building wall panels, comprising a pair of main support frames, and further comprising: Telescopic components, which are arranged at both ends of the main support frame and are used to clamp the building wall panels; An electric telescopic rod, which is installed on the top of the pair of main body support frames and is used to control the movement of the pair of main body support frames; An adjustment assembly, mounted in the middle of the main support frame, is used to control the expansion and contraction of the telescopic assembly to align the building wall panels; The telescopic assembly includes a pair of first telescopic frames slidably connected to the main support frame, one end of the first telescopic frame is slidably connected to the second telescopic frame, and both sides of the first telescopic frame are fixedly connected to the limited support rod; The adjustment assembly includes a power component installed in the middle of the main body support frame and a pair of first sliding seats slidably connected to the middle of the main body support frame.

[0006] Preferably, the first telescopic frame is located on the lower side of the main support frame, a fixed frame is installed on the top of one of the main support frames, and a fixed plate is installed on the side of the other main support frame, the output end of the electric telescopic rod is fixedly connected to the fixed plate, and the base of the electric telescopic rod is installed on the fixed frame, and the main support frame and the telescopic assembly form a positioning mechanism.

[0007] Preferably, one end of the first telescopic frame penetrates the main support frame, positioning holes are evenly distributed on the inner side of the first telescopic frame, and the second telescopic frame is fixedly connected to a support rail from the middle of one end close to the main support frame.

[0008] Preferably, the end of the second telescopic frame away from the first telescopic frame is fixedly connected to a clamping claw, and the middle part of the supporting slide rail is slidably connected to a movable seat.

[0009] Preferably, a fixing hole matching the positioning hole is provided inside the second telescopic frame, and locking protrusions are fixedly connected to both sides of the movable seat through elastic plates, and the locking protrusions are inserted into the fixing holes of the second telescopic frame.

[0010] Preferably, an elastic member is installed between the locking protrusion and the movable seat, a pull rod extends from the top of the locking protrusion to the middle of the movable seat, and a limit baffle is installed at the bottom of the pull plate and is slidably connected to the inside of the movable seat.

[0011] Preferably, the locking protrusion is inserted into the internal fixing hole and positioning hole of the second telescopic frame to lock the second telescopic frame and the first telescopic frame. The locking protrusion is pulled out of the positioning hole by the pull rod and is driven by the movable seat to move to be offset from the fixing port of the second telescopic frame. At this time, the second telescopic frame can slide freely along the first telescopic frame.

[0012] Preferably, the adjustment component also includes a pair of slide grooves 1 opened in the middle of the main support frame and a slide groove 2 opened at one end of the first telescopic frame, a pair of first sliding seats are slidably connected inside the slide groove 2, and a scissors fork is installed between the pair of first sliding seats and the pair of first sliding seats.

[0013] Preferably, the power component includes two parts: a motor and a bidirectional threaded rod, wherein the motor part is fixedly connected to the main support frame and a bidirectional threaded rod is installed at the output end, wherein the bidirectional threaded rod part is rotatably connected to the inside of the main support frame, and the first sliding seat is arranged at both ends of the bidirectional threaded rod.

[0014] Preferably, the power component drives the first sliding seat to slide, so that the first sliding seat closes by pulling the scissors, so that the scissors push the first telescopic frame to move through the first sliding seat, and the first telescopic frame drives the second telescopic frame to move to both sides until the clamping claws at both ends of the main support frame pass over the two ends of the building wall panel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention facilitates adjustment of the position of the clamping claw to adapt to the length of the wallboard by providing the cooperation of the second telescopic frame and the locking protrusion and other structures. By pulling the pull rod on the top of the locking protrusion, the fixing of the second telescopic frame and the first telescopic frame by the locking protrusion is released, and the movable seat is pushed to drive the locking protrusion to move so that it is offset from the fixing hole in the middle of the second telescopic frame. Thereafter, the second telescopic frames at both ends are pulled to move to the appropriate position, and then the movable seat is pushed to reset. Then, the second telescopic frame is pushed to retract inward so that the locking protrusion is inserted into the positioning hole, thereby adjusting the length of the alignment mechanism to a degree that is compatible with the building wallboard. The present invention facilitates the alignment and insertion of building wall panels by arranging a telescopic component and cooperating with structures such as the telescopic component. A building wall panel is fixed by a positioning mechanism, and then another positioning mechanism drives the first sliding seat to move and retract the other building wall panel through a power component, so that the first sliding seat pushes the first telescopic frame to move to both sides through the first sliding seat and the scissors until the clamping claw completely passes over the building wall panel. After surrounding the building wall panel, the power component drives the first sliding seat to move and open, so that the first telescopic frame is pulled to drive the clamping claw to retract and clamp the building wall panel, so that a pair of building wall panels are aligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the present invention as a whole; Figure 3 It is a cross-sectional schematic diagram of the telescopic assembly of the present invention; Figure 4 This is a diagram showing the movable seat of the present invention; Figure 5 This is a cross-sectional schematic diagram of the adjustment component of the present invention; Figure 6 This is a working schematic diagram of the alignment mechanism of the present invention.

[0017] In the figure: 1. Main support frame; 2. Telescopic assembly; 201. First telescopic frame; 202. Second telescopic frame; 203. Limit support rod; 204. Positioning hole; 205. Support slide rail; 206. Movable seat; 207. Locking protrusion; 208. Limit baffle; 209. Clamping claw; 3. Electric telescopic rod; 4. Adjustment assembly; 401. Power component; 402. First sliding seat; 403. Slide groove 1; 404. Slide groove 2; 405. First sliding seat; 406. Scissors. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0019] like Figures 1 to 6 As shown, the present invention provides an automatic alignment and locking device for installing assembled building wall panels, comprising a pair of main support frames 1, and further comprising: Telescopic components 2, which are arranged at both ends of the main support frame 1 and are used to clamp the building wall panels; An electric telescopic rod 3, which is installed on the top of the pair of main body support frames 1 and is used to control the movement of the pair of main body support frames 1; The adjustment component 4 is installed in the middle of the main support frame 1 and is used to control the expansion and contraction of the telescopic component 2 to align the building wall panels; The telescopic assembly 2 includes a pair of first telescopic frames 201 slidably connected to the main support frame 1, one end of the first telescopic frame 201 is slidably connected to the second telescopic frame 202, and both sides of the first telescopic frame 201 are fixedly connected to the limited support rod 203; The adjustment assembly 4 includes a power component 401 installed in the middle of the main body support frame 1 and a pair of first sliding seats 402 slidably connected to the middle of the main body support frame 1.

[0020] The above solution is adopted: by pulling the pull rod at the top of the locking protrusion 207, the locking protrusion 207 is pulled out from the fixing hole in the middle of the second telescopic frame 202, and then pushing the movable seat 206 to drive the locking protrusion 207 to move so that it is offset from the fixing hole in the middle of the second telescopic frame 202. Then, the second telescopic frames 202 at both ends are pulled to move the clamping claws 209 to a position aligned with the two ends of the building wallboard, and then the movable seat 206 is pushed to reset. Then, by pushing the second telescopic frame 202 toward the center, the locking protrusion 207 is inserted into the positioning hole 204, thereby adjusting the length of the alignment mechanism to a degree that is compatible with the building wallboard. After that, the building wall panels are arranged, and the alignment mechanism is placed at one end of the arranged building wall panels. The main support frame 1 at the bottom of the electric telescopic rod 3 is aligned with the building wall panel at the starting end. The power component 401 drives the first sliding seat 402 to move and retract, so that the first sliding seat 402 pushes the first telescopic frame 201 to move to the sides through the first sliding seat 405 and the scissors 406 until the clamping claw 209 completely passes over the building wall panel and then surrounds the building wall panel. The power component 401 then drives the first sliding seat 402 to move and open, so that the first telescopic frame 201 is pulled and the clamping claw 209 is retracted to clamp the building wall panel. Afterwards, the electric telescopic rod 3 pushes a set of alignment mechanisms to move to the next building wall panel and clamp it. Then, the electric telescopic rod 3 is retracted to pull the two aligned wall panels to insert and lock them. Then, the alignment mechanism at the output end of the electric telescopic rod 3 is controlled to loosen, and it is moved to the edge of the building wall panel to clamp it. Then, the alignment mechanism at the bottom position of the electric telescopic rod 3 is loosened, and it is pulled to move by retracting the electric telescopic rod 3. Then, the alignment mechanism on one side of the bottom of the electric telescopic rod 3 is controlled to clamp the building wall panel again. Then, the above operation is repeated to align the wall panels and insert and lock them.

[0021] like Figures 2 to 6 As shown, the first telescopic frame 201 is located on the lower side of the main support frame 1, a fixed frame is installed on the top of one main support frame 1, and a fixed plate is installed on the side of the other main support frame 1, the output end of the electric telescopic rod 3 is fixedly connected to the fixed plate, and the base of the electric telescopic rod 3 is installed on the fixed frame. The positioning mechanism is composed of the main support frame 1 and the telescopic assembly 2.

[0022] The above solution is adopted: by setting an electric telescopic rod 3, the electric telescopic rod 3 can be extended or retracted, and then the position of a pair of alignment mechanisms can be adjusted, so that the alignment mechanisms can clamp and drive the building wall panels to move, so that the building wall panels can be inserted and locked after alignment.

[0023] like Figures 2 to 4 As shown, one end of the first telescopic frame 201 penetrates the main support frame 1, and positioning holes 204 are evenly spaced on the inner side of the first telescopic frame 201. The second telescopic frame 202 is fixedly connected to a support rail 205 at the end near the main support frame 1 in the middle. The end of the second telescopic frame 202 away from the first telescopic frame 201 is fixedly connected to a clamping claw 209, and a movable seat 206 is slidably connected to the middle of the support rail 205.

[0024] The above solution adopts: the arrangement of the first telescopic frame 201 and the second telescopic frame 202, through the sliding second telescopic frame 202, enables the second telescopic frame 202 to drive the clamping claw 209 to move, thereby making the length value of the alignment mechanism correspond to the building wall panel, so that the telescopic assembly 2 can clamp the building wall panel. The arrangement of the positioning hole 204 can facilitate the control of the movement distance of the second telescopic frame 202.

[0025] like Figures 2 to 4As shown, a fixing hole matching the positioning hole 204 is opened inside the second telescopic frame 202, and locking protrusions 207 are fixedly connected on both sides of the movable seat 206 through elastic plates, and the locking protrusions 207 are inserted into the fixing holes of the second telescopic frame 202, and an elastic member is installed between the locking protrusion 207 and the movable seat 206. A pull rod extends from the top of the locking protrusion 207 to the middle of the movable seat 206, and a limit baffle 208 slidably connected to the inside of the movable seat 206 is installed at the bottom of the pull plate. The locking protrusion 207 is inserted into the fixing hole and the positioning hole 204 inside the second telescopic frame 202 to lock the second telescopic frame 202 and the first telescopic frame 201. The locking protrusion 207 is pulled out of the positioning hole 204 by the pull rod and is driven by the movable seat 206 to move to be staggered with the fixing port of the second telescopic frame 202. At this time, the second telescopic frame 202 can slide freely along the first telescopic frame 201.

[0026] The above scheme is adopted: by providing a movable seat 206 and a locking protrusion 207, the locking protrusion 207 is inserted into the fixing hole of the second telescopic frame 202 and the positioning hole 204, so as to fix the first telescopic frame 201 to the second telescopic frame 202. At the same time, the elastic plate and elastic member provided between the locking protrusion 207 and the movable seat 206 make it easy to pull the locking protrusion 207 out of the positioning hole 204 and also directly insert it when it is aligned with the positioning hole 204. The setting of the supporting slide rail 205 and the movable seat 206 can enable the movable seat 206 to drive the locking protrusion 207 to move and stagger with the fixing hole of the second telescopic frame 202 when adjusting the length of the second telescopic frame 202, so that the second telescopic frame 202 can slide freely. The setting of the limit baffle 208 can facilitate the limiting of the locking protrusion 207 to prevent the locking protrusion 207 from deflecting.

[0027] like Figures 3 to 5 As shown, the adjustment component 4 also includes a pair of slide grooves 1 403 opened in the middle of the main support frame 1 and a slide groove 2 404 opened at one end of the first telescopic frame 201, and a pair of first sliding seats 405 are slidably connected inside the slide groove 204, and a scissors fork 406 is installed between the pair of first sliding seats 402 and the pair of first sliding seats 405. The power component 401 includes two parts: a motor and a bidirectional threaded rod, wherein the motor part is fixedly connected to the main support frame 1 and a bidirectional threaded rod is installed at the output end, wherein the bidirectional threaded rod part is rotatably connected to the inside of the main support frame 1, and the first sliding seat 402 is sleeved on both ends of the bidirectional threaded rod.

[0028] The above solution is adopted: by setting the adjustment component 4, the power component 401 can drive the first sliding seat 402 to move, so that the first sliding seat 402 pushes the first telescopic frame 201 to open to both sides. The setting of the slide groove 1 403 and the slide groove 2 404 is used to limit the first sliding seat 402 and the first sliding seat 405. The scissors 406 between the first sliding seat 402 and the first sliding seat 405 ensures that the first telescopic frame 201 is stable when moving, so that the first telescopic frames 201 on both sides move synchronously to clamp the building wall panels.

[0029] like Figures 3 to 5 As shown, the power component 401 drives the first sliding seat 402 to slide, so that the first sliding seat 402 closes by pulling the scissors fork 406, so that the scissors fork 406 pushes the first telescopic frame 201 to move through the first sliding seat 405, so that the first telescopic frame 201 drives the second telescopic frame 202 to move to both sides until the clamping claws 209 at both ends of the main support frame 1 pass over the two ends of the building wall panel.

[0030] According to the above solution, when the power component 401 drives the first sliding seat 402 to slide, the first sliding seat 402 pulls the scissors fork 406 to close, so that the scissors fork 406 pushes the first telescopic frame 201 to move through the first sliding seat 405, so that the first telescopic frame 201 drives the second telescopic frame 202 to move to both sides until the clamping claws 209 at both ends of the main support frame 1 pass over the two ends of the building wall panel.

[0031] The working principle and usage process of the present invention are as follows: when in use, first pull the pull rod at the top of the locking protrusion 207 to pull the locking protrusion 207 out of the fixing hole in the middle of the second telescopic frame 202, then push the movable seat 206 to drive the locking protrusion 207 to move so that it is offset from the fixing hole in the middle of the second telescopic frame 202, then pull the second telescopic frames 202 at both ends to move the clamping claws 209 to a position aligned with the two ends of the building wallboard, then push the movable seat 206 to reset, and then push the second telescopic frame 202 to retract inward so that the locking protrusion 207 is inserted into the positioning hole 204, thereby adjusting the length of the alignment mechanism to a degree that is compatible with the building wallboard; After that, the building wall panels are arranged, and the alignment mechanism is placed at one end of the arranged building wall panels. The main support frame 1 at the bottom of the electric telescopic rod 3 is aligned with the building wall panel at the starting end. The power component 401 drives the first sliding seat 402 to move and retract, so that the first sliding seat 402 pushes the first telescopic frame 201 to move to the sides through the first sliding seat 405 and the scissors 406 until the clamping claw 209 completely passes over the building wall panel and then surrounds the building wall panel. The power component 401 then drives the first sliding seat 402 to move and open, so that the first telescopic frame 201 is pulled and the clamping claw 209 is retracted to clamp the building wall panel. Afterwards, the electric telescopic rod 3 pushes a set of alignment mechanisms to move to the next building wall panel and clamp it. Then, the electric telescopic rod 3 is retracted to pull the two aligned wall panels to insert and lock them. Then, the alignment mechanism at the output end of the electric telescopic rod 3 is controlled to loosen, and it is moved to the edge of the building wall panel to clamp it. Then, the alignment mechanism at the bottom position of the electric telescopic rod 3 is loosened, and it is pulled to move by retracting the electric telescopic rod 3. Then, the alignment mechanism on one side of the bottom of the electric telescopic rod 3 is controlled to clamp the building wall panel again. Then, the above operation is repeated to align the wall panels and insert and lock them.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic alignment and locking device for installing assembled building wall panels, comprising a pair of main support frames (1), characterized in that: Also includes: Telescopic components (2), which are arranged at both ends of the main support frame (1) and are used to clamp the building wall panels; An electric telescopic rod (3) mounted on the top of the pair of main body support frames (1) and used to control the movement of the pair of main body support frames (1); An adjustment component (4) is mounted in the middle of the main support frame (1) and is used to control the expansion and contraction of the telescopic component (2) to align the building wall panels; The telescopic assembly (2) comprises a pair of first telescopic frames (201) slidably connected to the main support frame (1), one end of the first telescopic frame (201) is slidably connected to the second telescopic frame (202), and both sides of the first telescopic frame (201) are fixedly connected to limited support rods (203); The adjustment assembly (4) comprises a power component (401) mounted in the middle of the main support frame (1) and a pair of first sliding seats (402) slidably connected to the middle of the main support frame (1).

2. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 1, characterized in that: The first telescopic frame (201) is located on the lower side of the main support frame (1), a fixing frame is installed on the top of one main support frame (1), and a fixing plate is installed on the side of the other main support frame (1), the output end of the electric telescopic rod (3) is fixedly connected to the fixing plate, and the base of the electric telescopic rod (3) is installed on the fixing frame, and the main support frame (1) and the telescopic assembly (2) form a positioning mechanism.

3. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 1 is characterized in that: One end of the first telescopic frame (201) penetrates the main support frame (1), and positioning holes (204) are evenly distributed on the inner side of the first telescopic frame (201). The second telescopic frame (202) is fixedly connected to a support rail (205) at one end near the main support frame (1) from the middle.

4. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 3 is characterized in that: One end of the second telescopic frame (202) away from the first telescopic frame (201) is fixedly connected to a clamping claw (209), and the middle part of the supporting slide rail (205) is slidably connected to a movable seat (206).

5. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 4, characterized in that: A fixing hole matching the positioning hole (204) is provided inside the second telescopic frame (202), and locking protrusions (207) are fixedly connected to both sides of the movable seat (206) via elastic plates, and the locking protrusions (207) are inserted into the fixing holes of the second telescopic frame (202).

6. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 5, characterized in that: An elastic member is installed between the locking protrusion (207) and the movable seat (206), a pull rod extends from the top of the locking protrusion (207) to the middle of the movable seat (206), and a limit baffle (208) is installed at the bottom of the pull plate and is slidably connected to the inside of the movable seat (206).

7. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 6, characterized in that: The locking protrusion (207) is inserted into the internal fixing hole and the positioning hole (204) of the second telescopic frame (202) to lock the second telescopic frame (202) and the first telescopic frame (201). The locking protrusion (207) is pulled out of the positioning hole (204) by the tension rod and is driven by the movable seat (206) to move to a position offset from the fixing opening of the second telescopic frame (202). At this time, the second telescopic frame (202) can slide freely along the first telescopic frame (201).

8. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 1, characterized in that: The adjustment assembly (4) further comprises a pair of slide grooves 1 (403) provided in the middle of the main support frame (1) and a slide groove 2 (404) provided at one end of the first telescopic frame (201), wherein a pair of first sliding seats (405) are slidably connected inside the slide groove 2 (404), and a scissor fork (406) is installed between the pair of first sliding seats (402) and the pair of first sliding seats (405).

9. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 1, characterized in that: The power component (401) comprises a motor and a bidirectional threaded rod, wherein the motor portion is fixedly connected to the main support frame (1) and a bidirectional threaded rod is installed at the output end, wherein the bidirectional threaded rod portion is rotatably connected to the inside of the main support frame (1), and the first sliding seat (402) is sleeved on both ends of the bidirectional threaded rod.

10. The automatic alignment and locking device for installing prefabricated building wall panels according to claim 9, characterized in that: The power component (401) drives the first sliding seat (402) to slide, so that the first sliding seat (402) closes by pulling the scissors (406), so that the scissors (406) push the first telescopic frame (201) to move through the first sliding seat (405), so that the first telescopic frame (201) drives the second telescopic frame (202) to move to both sides until the clamping claws (209) at both ends of the main support frame (1) pass over both ends of the building wall panel.