A concrete product stacking clamp

Abstract

This invention relates to the field of concrete product transportation equipment, specifically a concrete product stacking clamp, including a pulling mechanism. Two rectangular tubes symmetrically arranged on the pulling mechanism slide left and right. The pulling mechanism drives the two rectangular tubes to move synchronously in opposite directions. A synchronous frame is fixedly installed on the lower part of the rectangular tubes, away from the center of the pulling mechanism. A clamping mechanism for holding the concrete products is jointly provided on the synchronous frame and the rectangular tubes. An anti-falling mechanism is provided at the lower part of the synchronous frame to prevent concrete from falling off. This invention uses a clamping plate and a floating clamping plate that abut against the side of a precast solid square pile. This allows a pushing spring to push the floating clamping plate to flexibly adapt to the uneven side of the precast solid square pile, thereby ensuring a tight fit between the clamping plate and the side of the precast solid square pile, guaranteeing the actual contact area between the clamping plate and the side of the precast solid square pile, and thus preventing the precast solid square pile from slipping.

Description

Technical Field

[0001] This invention relates to the field of concrete product transportation equipment, specifically a concrete product stacking clamp. Background Technology

[0002] Precast solid square piles are a common type of precast concrete piles. Stacking precast solid square piles can make reasonable use of the site, facilitate hoisting and retrieval, and improve construction efficiency. The shape of precast solid square piles is usually cuboid. Currently, clamps are often used to hold the precast solid square piles first, and then lifting equipment is used to lift the precast solid square piles through the clamps before moving the precast solid square piles to the stacking position.

[0003] Existing clamps typically consist of a frame, a linkage assembly, and clamping plates. When lifting precast solid square piles, the clamping plates are placed on both sides of the precast solid square pile. Then, the linkage assembly is lifted upwards by the lifting equipment. Under the action of gravity, the frame keeps the height of the clamping plates constant, so that the linkage assembly drives the clamping plates to clamp the two sides of the precast solid square pile, thereby locking the clamp and the precast solid square pile together.

[0004] However, precast solid square piles often have a large weight and volume, and the manufacturing process of precast solid square piles varies, resulting in unevenness on the sides. Therefore, when the clamp is held on the side of the precast solid square pile, the clamp cannot be flexibly adjusted according to the unevenness of the side of the precast solid square pile, so the clamp cannot adaptively and tightly fit the side of the pile, which may cause the pile to shift and slide during transportation.

[0005] Furthermore, when the precast solid square pile sways during lifting or transport, the clamping force of the clamping plate on the side of the precast solid square pile may be insufficient to support the weight of the precast solid square pile. The existing clamping device lacks a structure to support and protect the bottom of the precast solid square pile, which may cause the precast solid square pile to fall out of the clamping device, thereby posing a serious safety threat to the equipment and personnel below. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a concrete product stacking clamp, including a pulling mechanism, on which two rectangular tubes are symmetrically arranged and slidably mounted left and right. The pulling mechanism drives the two rectangular tubes to move synchronously in opposite directions. A synchronous frame is fixedly installed on the lower part of the rectangular tubes away from the middle of the pulling mechanism. The synchronous frame and the rectangular tubes are jointly provided with a clamping mechanism for clamping the concrete products. The lower part of the synchronous frame is provided with an anti-falling mechanism to prevent the concrete from falling off.

[0007] The clamping mechanism includes a clamping plate that is slidably mounted on the side of the synchronous frame near the middle of the traction mechanism. Several floating clamping plates are evenly spaced along the front-back direction on the clamping plate. The floating clamping plates slide along the thickness direction of the clamping plate. Several anti-slip protrusions are provided on the side of the floating clamping plates near the middle of the traction mechanism. A push spring is provided between the floating clamping plates and the clamping plate. A limiting component for locking the floating clamping plates is provided on both the clamping plate and the rectangular tube.

[0008] The anti-dropping mechanism includes an L-shaped component set at the lower part of the synchronization frame via a movable component. The horizontal section of the L-shaped component is located between two clamping plates on the side near the middle of the traction mechanism. The anti-dropping mechanism also includes a position locking component for locking the position of the L-shaped component.

[0009] Preferably, the limiting component includes a T-shaped plate fixedly installed on the lower part of the rectangular tube near the middle of the traction mechanism, a tension spring is provided between the rectangular tube and the clamping plate, and the lower part of the horizontal section of the T-shaped plate pushes the floating clamping plate towards the middle of the traction mechanism through the locking part.

[0010] Preferably, the locking part includes several sets of locking teeth that are equally spaced along the front-back direction and are located at the lower part of the horizontal section of the T-shaped plate, corresponding one-to-one with the floating clamping plate. Each set consists of two locking teeth that are symmetrically arranged on the front and back sides of the floating clamping plate at corresponding positions. Wedge-shaped blocks are provided on the front and back sides of the floating clamping plate at the positions corresponding to the locking teeth.

[0011] Preferably, the inclined surface of the wedge block is located at its lower part and faces away from the middle of the traction mechanism, the locking teeth on the locking tooth are located at the lower part of the corresponding wedge block, and the inclined surface of the locking tooth at the corresponding position is arranged opposite to the inclined surface of the wedge block.

[0012] Preferably, the moving component includes two inclined guide grooves arranged vertically on the synchronization frame and extending through the synchronization frame from front to back. The inclined guide grooves gradually slope downwards towards the side closer to the middle of the traction mechanism. A moving plate is provided inside the synchronization frame. Two fixed columns are fixedly installed on the upper part of the moving plate, and the fixed columns slide in the inclined guide grooves at the corresponding positions.

[0013] Preferably, the side of the movable plate away from the middle of the traction mechanism is slidably connected to the vertical section of the L-shaped component. Two bolts are arranged vertically on the vertical section of the L-shaped component. Several positioning holes are equally spaced along the vertical direction on the movable plate. The L-shaped component is locked to the movable plate as a whole by bolts.

[0014] Preferably, the position locking assembly includes a trigger slider that slides up and down on the horizontal section of the L-shaped component, a second tension spring is provided between the trigger slider and the L-shaped component, two locking components that are symmetrically arranged in an L-shape are slidably mounted on the moving plate, a rectangular hole is provided at the lower part of the synchronization frame for the horizontal section of the locking component to be inserted, and the position locking assembly also includes a trigger part for driving the locking component to move.

[0015] Preferably, the position locking assembly further includes two locking plugs symmetrically arranged vertically on the horizontal section of the locking member. The locking plugs have a right-angled trapezoidal structure, and a linkage support rod is fixedly installed inside the locking plugs. An unlocking plate is slidably arranged inside the horizontal section of the locking member. A V-shaped opening groove is provided on the unlocking plate. Grooves for the locking plugs to extend into are provided on the upper and lower side walls of the rectangular hole. A helical spring is provided between the two corresponding locking plugs.

[0016] Preferably, the triggering part includes a pull plate fixedly installed on the upper side of the middle of the triggering slider, and a sliding plate is slidably arranged on the lower part of the moving plate near the middle of the pulling mechanism. The sliding plate is fixedly connected to the pull plate by a locking screw. Two symmetrically arranged waist-shaped grooves are provided on the sliding plate. The lower part of the locking member is provided with a sliding guide pin that extends out of the moving plate and slides inside the corresponding waist-shaped groove.

[0017] Preferably, a U-shaped plate is fixedly installed on the upper part of the pull plate, and the two vertical sections of the U-shaped plate are slidably connected to the clamping plate at the corresponding positions. A pushing block is slidably connected to the vertical section on the front side of the U-shaped plate by a fixing screw, and the pushing block is located on the upper part of the clamping plate.

[0018] The beneficial effects of this invention are as follows: First, this invention uses a clamping plate and a floating clamping plate to abut against the side of the precast solid square pile, so that the pushing spring can push the floating clamping plate to flexibly adapt to the uneven side of the precast solid square pile, thereby enabling the clamping plate and the floating clamping plate to fit tightly with the precast solid square pile, ensuring the actual contact area between the clamping plate and the side of the precast solid square pile, and thus preventing the precast solid square pile from sliding during transportation.

[0019] Second, the present invention uses a limiting component to push and lock the position of the floating clamp during transportation, so that the floating clamp with different amounts of movement can be tightly abutted against the precast solid square pile. Furthermore, by pushing the floating clamp, the clamping force of the floating clamp on the precast solid square pile can be increased, further ensuring the clamping stability of the precast solid square pile.

[0020] Third, the present invention employs an L-shaped component whose horizontal section can automatically extend into the lower part of the precast solid square pile when it is lifted, thereby protecting the precast solid square pile from falling out of the clamp and eliminating construction safety threats. Furthermore, when the precast solid square pile falls onto the L-shaped component, the position locking component can lock the position of the L-shaped component, thereby further preventing the precast solid square pile from falling out of the clamp.

[0021] Fourth, the position locking component of this invention can also pull the clamping plate when the precast solid square pile falls onto the L-shaped component, so that the limiting component increases the clamping force of the floating clamping plate on the precast solid square pile, thereby further increasing the stability of the precast solid square pile on the L-shaped component and further preventing the precast solid square pile from falling off the clamp. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the left side of the present invention after the traction mechanism has been removed.

[0025] Figure 3 This is a cross-sectional view of the rectangular tube, the synchronization frame, and the clamping mechanism in this invention.

[0026] Figure 4 This is a partial cross-sectional view of the limiting component in this invention.

[0027] Figure 5 This is a schematic diagram of the structure of the anti-detachment mechanism of the present invention after removing the U-shaped plate and the pushing block, along with the rectangular tube and the synchronous frame.

[0028] Figure 6 This is a partial sectional view of the movable plate, fixed column, locking component, locking plug, unlocking plate, sliding plate, waist-shaped groove and sliding guide pin in this invention.

[0029] Figure 7 This is a partial cross-sectional view of the synchronization frame, locking component, rectangular hole, locking plug, linkage rod, unlocking plate, and V-shaped opening groove in this invention.

[0030] Figure 8 This is a schematic diagram of the structure of the locking plug, linkage rod, unlocking plate and V-shaped opening groove in this invention.

[0031] Figure 9 This is a schematic diagram of the structure of the clamping plate, U-shaped plate, pushing block, pulling plate and trigger slider in this invention.

[0032] In the diagram: 1. Pulling mechanism; 2. Rectangular tube; 3. Synchronization frame; 4. Clamping mechanism; 5. Anti-drop mechanism; 41. Clamping plate; 42. Floating clamping plate; 43. Limiting component; 51. Moving component; 52. L-shaped part; 53. Position locking component; 54. U-shaped plate; 431. T-shaped plate; 432. Locking part; 511. Angled guide groove; 512. Moving plate; 513. Fixed column; 521 531. Positioning hole; 532. Trigger slider; 533. Locking component; 534. Rectangular hole; 535. Trigger part; 536. Locking plug; 537. Linkage support rod; 538. Unlocking plate; 541. V-shaped opening groove; 5321. Push block; 4322. Locking tooth component; 5323. Wedge block; 5344. Pull plate; 5345. Sliding plate; 5346. Waist-shaped groove; 5347. Sliding guide pin. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product manual.

[0034] See Figure 1 and Figure 2 A concrete product stacking clamp includes a pulling mechanism 1. Two rectangular tubes 2 are symmetrically arranged on the pulling mechanism 1 and slide left and right. The pulling mechanism 1 drives the two rectangular tubes 2 to move synchronously in opposite directions. A synchronous frame 3 is fixedly installed on the lower part of the rectangular tubes 2 away from the middle of the pulling mechanism 1. The synchronous frame 3 and the rectangular tubes 2 are jointly provided with a clamping mechanism 4 for clamping the concrete products. The lower part of the synchronous frame 3 is provided with an anti-falling mechanism 5 for preventing concrete from falling off.

[0035] When precast solid square piles need to be stacked and transported, the upper part of the traction mechanism 1 is placed under the lifting equipment. Then, by moving the traction mechanism 1, the two rectangular tubes 2 are moved to the upper part of the precast solid square piles. Then, the traction mechanism 1 is moved downwards, and the two synchronous frames 3 are moved to the left and right sides of the precast solid square piles respectively through the rectangular tubes 2. Then, the traction mechanism 1 is lifted, so that the clamping mechanism 4 remains unchanged under the action of gravity, thereby making the traction mechanism 1 move the two rectangular tubes 2 synchronously closer to each other.

[0036] It should be noted that the traction mechanism 1 in this embodiment consists of a square tube, two sliding plates, two scissor arms, and two booms as in the prior art. The upper ends of the two booms are hinged to each other, the middle parts of the two scissor arms are hinged to each other, the lower end of the boom is hinged to the upper end of the corresponding scissor arm, the two sliding plates are slidably arranged inside the square tube, and the two sliding plates are arranged front and back, the lower ends of the two scissor arms are respectively hinged to the sliding plates at corresponding positions, and the rectangular tube 2 is fixedly connected to the sliding plates at corresponding positions by bolts.

[0037] When the lifting equipment moves upward, it causes the two booms to move upward relative to the square tube, so that the lower ends of the two booms move closer to each other under the action of gravity. The two booms also cause the lower parts of the two scissor arms to move closer to each other, so that the two scissor arms move the two rectangular tubes 2 to move closer to each other synchronously through the two sliding plates.

[0038] The rectangular tube 2 is clamped onto the precast solid square pile by the clamping mechanism 4 driven by the synchronous frame 3. Then, the traction mechanism 1 is lifted, so that the traction mechanism 1 drives the precast solid square pile to move upward synchronously through the clamping mechanism 4. At this time, the anti-falling mechanism 5 gradually moves under the action of gravity, thereby protecting the bottom of the precast solid square pile.

[0039] See Figure 1 , Figure 2 and Figure 3 The clamping mechanism 4 includes a clamping plate 41 that is slidably disposed on the side of the synchronous frame 3 near the middle of the pulling mechanism 1. Several floating clamping plates 42 are evenly spaced on the clamping plate 41 along the front-back direction. The floating clamping plates 42 slide along the thickness direction of the clamping plate 41. Several anti-slip protrusions are provided on the side of the floating clamping plate 42 near the middle of the pulling mechanism 1. A push spring is provided between the floating clamping plate 42 and the clamping plate 41.

[0040] In the initial state, the push spring pushes the floating clamp 42 with its own elastic force, so that the side of the floating clamp 42 with anti-slip protrusions extends towards the middle of the traction mechanism 1 to the outside of the clamping plate 41. When the traction mechanism 1 drives the two synchronous frames 3 to move closer to each other, the synchronous frames 3 drive the clamping plate 41 on them to move synchronously, and the clamping plate 41 drives the floating clamp 42 on it to move synchronously, so that the floating clamp 42 and the anti-slip protrusions on it abut against the side of the precast solid square pile before the clamping plate 41.

[0041] Then, continue to move the clamping plate 41 until it abuts against the side of the precast solid square pile, so that the precast solid square pile compresses the push spring at the corresponding position by pushing the floating clamping plate 42, thereby causing the push spring to push the floating clamping plate 42 to fit tightly against the side of the precast solid square pile through its own elasticity, and thus flexibly adjust the uneven side of the precast solid square pile.

[0042] Continue reading Figure 1, Figure 2 and Figure 3 The clamping plate 41 and the rectangular tube 2 are jointly provided with a limiting component 43 for locking the floating clamping plate 42. The limiting component 43 includes a T-shaped plate 431 fixedly installed on the lower part of the rectangular tube 2 near the middle of the pulling mechanism 1. A tension spring is provided between the rectangular tube 2 and the clamping plate 41. The lower part of the horizontal section of the T-shaped plate 431 pushes the floating clamping plate 42 towards the middle of the pulling mechanism 1 through the locking part 432.

[0043] See Figure 3 and Figure 4 The locking part 432 includes several sets of locking teeth 4321 that are equally spaced along the front-back direction and are located at the lower part of the horizontal section of the T-shaped plate 431, corresponding to the floating clamp 42. Each set consists of two locking teeth 4321 that are symmetrically arranged on the front and back sides of the floating clamp 42 at corresponding positions. Wedge blocks 4322 are provided on the front and back sides of the floating clamp 42 at the positions corresponding to the locking teeth 4321.

[0044] Continue reading Figure 3 and Figure 4 The inclined surface of the wedge block 4322 is located at its lower part and faces away from the middle of the pulling mechanism 1. The locking teeth on the locking tooth 4321 are located at the lower part of the corresponding wedge block 4322, and the inclined surface of the locking tooth 4321 at the corresponding position is arranged opposite to the inclined surface of the wedge block 4322.

[0045] In the initial state, the No. 1 tension spring pulls the clamping plate 41 upward through its own elastic force, so that the clamping plate 41 drives the wedge block 4322 on it to move completely to the upper part of the locking tooth 4321 through the floating clamping plate 42. Thus, when the precast solid square pile moves the wedge block 4322 on it by pushing the floating clamping plate 42, the locking tooth 4321 will not obstruct the position of the wedge block 4322.

[0046] When both the clamping plate 41 and the floating clamping plate 42 are pressed against the precast solid square pile, the traction mechanism 1 is raised further, causing the traction mechanism 1 to move the rectangular tube 2 upward relative to the clamping plate 41. At the same time, the No. 1 tension spring is stretched, so that the rectangular tube 2 drives all the locking teeth 4321 to move upward relative to the wedge block 4322 through the T-shaped plate 431. At this time, the friction of the precast solid square pile on the clamping plate 41 keeps the clamping plate 41 at a constant height, and thus the clamping plate 41 drives the wedge block 4322 to remain at a constant height through the floating clamping plate 42.

[0047] Subsequently, the toothed component 4321 abuts against the inclined surface of the wedge block 4322, and the toothed component 4321 pushes the wedge block 4322 towards the middle of the traction mechanism 1. The wedge block 4322 drives the floating clamp 42 to further press against the precast solid square pile to ensure clamping stability.

[0048] When the floating clamp 42 is pressed against the precast solid square pile, the pulling mechanism 1 is raised, so that the pulling mechanism 1 moves upward through the clamping plate 41 and the floating clamp 42.

[0049] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The anti-fall-off mechanism 5 includes an L-shaped member 52 set at the lower part of the synchronization frame 3 via a movable component 51. The horizontal section of the L-shaped member 52 is located between two clamping plates 41 on the side closer to the middle of the traction mechanism 1. The movable component 51 includes two inclined guide grooves 511 arranged vertically and extending through the synchronization frame 3. The inclined guide grooves 511 gradually slope downwards towards the side closer to the middle of the traction mechanism 1. A movable plate 512 is provided inside the synchronization frame 3. Two fixed columns 513 are fixedly installed on the upper part of the movable plate 512. The fixed columns 513 slide in the inclined guide grooves 511 at the corresponding positions.

[0050] See Figure 2 and Figure 5 The side of the movable plate 512 away from the middle of the traction mechanism 1 is slidably connected to the vertical section of the L-shaped part 52. Two bolts are arranged vertically on the vertical section of the L-shaped part 52. Several positioning holes 521 are equally spaced along the vertical direction on the movable plate 512. The L-shaped part 52 is locked to the movable plate 512 as a whole by bolts.

[0051] In the initial state, the L-shaped pieces 52 on both sides are located on both sides of the precast solid square pile, and the fixed column 513 is located on the upper part inside the corresponding inclined guide groove 511. When the synchronous frame 3 drives the precast solid square pile to move upward through the clamping plate 41 and the floating clamping plate 42, the L-shaped pieces 52 pull the moving plate 512 under the action of gravity to keep the height unchanged, so that the synchronous frame 3 moves upward relative to the moving plate 512, and then the fixed column 513 moves downward along the trajectory of the inclined guide groove 511.

[0052] As the fixed column 513 moves downward along the trajectory of the inclined guide groove 511, the fixed column 513 drives the moving plate 512 to move towards the middle of the traction mechanism 1 relative to the synchronous frame 3 at the corresponding position. The moving plate 512 drives the L-shaped piece 52 to move synchronously. When the fixed column 513 moves to the bottom of the inclined guide groove 511, the horizontal section of the L-shaped piece 52 moves to the bottom of the precast solid square pile, and the horizontal section of the L-shaped piece 52 does not contact the precast solid square pile, so that the L-shaped piece 52 protects the precast solid square pile through its horizontal section.

[0053] By pre-inserting bolts into positioning holes 521 at different positions, the distance between the horizontal section of the L-shaped component 52 and the moving plate 512 is adjusted, thereby enabling the L-shaped component 52 to protect precast solid square piles of different heights.

[0054] See Figure 1 , Figure 3 , Figure 5 and Figure 6 The anti-fall-off mechanism 5 also includes a position locking component 53 for locking the position of the L-shaped part 52. The position locking component 53 includes a trigger slider 531 that is slidably disposed on the horizontal section of the L-shaped part 52. A second tension spring is disposed between the trigger slider 531 and the L-shaped part 52. Two locking parts 532 that are symmetrically arranged in an L-shape are slidably disposed on the moving plate 512. A rectangular hole 533 is provided at the lower part of the synchronous frame 3 for the horizontal section of the locking part 532 to be inserted.

[0055] In the initial state, the second tension spring pulls the trigger slider 531 upward with its own elastic force, so that the upper side of the trigger slider 531 is located at the upper part of the horizontal section of the L-shaped piece 52. When the precast solid square pile slides off the clamping plate 41 and the floating clamping plate 42 and falls to the upper part of the horizontal section of the L-shaped piece 52, the precast solid square pile presses down on the trigger slider 531, so that the trigger slider 531 moves downward into the interior of the horizontal section of the L-shaped piece 52.

[0056] See Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 The position locking assembly 53 also includes a trigger part 534 for moving the locking member 532. The trigger part 534 includes a pull plate 5341 fixedly installed on the upper side of the middle of the trigger slider 531. A sliding plate 5342 is slidably arranged on the lower part of the moving plate 512 near the middle of the pulling mechanism 1. The sliding plate 5342 is fixedly connected to the pull plate 5341 by a locking screw. Two symmetrically arranged waist-shaped grooves 5343 are provided on the sliding plate 5342. A sliding guide pin 5344 is provided on the lower part of the locking member 532, which extends out of the moving plate 512 and slides inside the corresponding waist-shaped groove 5343.

[0057] In the initial state, the trigger slider 531 pushes the sliding plate 5342 upward through the pull plate 5341, so that the sliding plate 5342 pushes the sliding guide pin 5344 towards the middle of the moving plate 512 through the waist-shaped groove 5343 on it. The sliding guide pin 5344 drives the horizontal section of the locking member 532 at the corresponding position to disengage from the interior of the corresponding rectangular hole 533.

[0058] When the precast solid square pile is pressed down to trigger the slider 531, the trigger slider 531 drives the horizontal section of the locking member 532 to insert into the corresponding rectangular hole 533 through the sliding plate 5342. This causes the rectangular hole 533 to limit the moving plate 512 through the locking member 532, thereby locking the moving plate 512 and the synchronous frame 3 into a whole. This causes the moving plate 512 to drive the L-shaped member 52 to lock into a whole with the synchronous frame 3, thus preventing the precast solid square pile from falling off when it slides onto the L-shaped member 52 due to the movement of the L-shaped member 52.

[0059] See Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The position locking assembly 53 also includes two locking plugs 535 that are symmetrically arranged vertically on the horizontal section of the locking member 532. The locking plugs 535 have a right-angled trapezoidal structure. A linkage support rod 536 is fixedly installed inside the locking plugs 535. An unlocking plate 537 is slidably arranged back and forth inside the horizontal section of the locking member 532. A V-shaped opening groove 538 is opened on the unlocking plate 537. The upper and lower side walls of the rectangular hole 533 are provided with grooves for the locking plugs 535 to extend into. A helical spring is provided between the two corresponding locking plugs 535.

[0060] In the initial state, the coil spring pushes the two locking plugs 535 away from each other through its own elastic force, so that the inclined part on the locking plug 535 extends to the outside of the horizontal section of the locking member 532. When the horizontal section of the locking member 532 moves into the rectangular hole 533, the locking member 532 drives the inclined part of the locking plug 535 to contact the edge of the rectangular hole 533, so that the rectangular hole 533 pushes the inclined part of the two locking plugs 535 into the interior of the locking member 532 and compresses the coil spring.

[0061] When the horizontal section of the locking member 532 moves completely into the interior of the rectangular hole 533, the locking member 532 drives the locking plug 535 to move to the groove position on the rectangular hole 533. This causes the helical spring to push the two locking plugs 535 to their initial position through its own elastic force. As a result, the locking plug 535 abuts against the side wall of the groove on the rectangular hole 533 through its vertical section, thereby preventing the horizontal section of the locking member 532 from accidentally moving out of the rectangular hole 533 without human intervention. This further ensures the stability of the L-shaped member 52 in supporting and protecting the slipping precast solid square pile.

[0062] See Figure 2 and Figure 9A U-shaped plate 54 is fixedly installed on the upper part of the pull plate 5341. The two vertical sections of the U-shaped plate 54 are slidably connected to the clamping plate 41 at the corresponding positions. A push block 541 is slidably connected to the vertical section on the front side of the U-shaped plate 54 by fixing screws. The push block 541 is located on the upper part of the clamping plate 41.

[0063] When the precast solid square pile slips off onto the L-shaped member 52, the pull plate 5341 drives the push block 541 to move downward through the U-shaped plate 54. The push block 541 pushes the clamping plate 41 to move downward synchronously. The principle is the same as above, so that the toothed member 4321 drives the floating clamping plate 42 to move again towards the middle of the pulling mechanism 1 by pushing the wedge block 4322. This increases the clamping force of the floating clamping plate 42 on the precast solid square pile, further increasing the stability of the precast solid square pile when it slips off onto the L-shaped member 52.

[0064] When a precast solid square pile that has not slipped moves to the stacking position, the pulling mechanism 1 moves downward to cause the lower side of the L-shaped piece 52 to contact the ground or the upper side of other precast solid square piles. This causes the L-shaped piece 52 to move to the two sides of the precast solid square pile under the push of the reaction force of the ground or other precast solid square piles. Then, the pulling mechanism 1 places the precast solid square pile on the ground or the upper side of other precast solid square piles through the clamping plate 41 and the floating clamping plate 42. Then, the pulling mechanism 1 moves downward relative to the rectangular tube 2, so that the clamping plate 41 and the floating clamping plate 42 no longer clamp the precast solid square pile, thereby completing the conveying and stacking of the precast solid square pile.

[0065] It should be noted that when the slipped precast solid square pile presses the upper side of the trigger slider 531 into the horizontal section of the L-shaped piece 52, the lower side of the trigger slider 531 extends downward to the lower side of the horizontal section of the L-shaped piece 52.

[0066] When the precast solid square pile that has slid off the L-shaped piece 52 moves to the stacking position, the pulling mechanism 1 drives the lower side of the trigger slider 531 to abut against the ground or the upper side of other precast solid square piles. Then, the operator manually presses the unlocking plate 537 into the locking piece 532. The unlocking plate 537 pushes the two corresponding linkage rods 536 through the V-shaped opening groove 538, so that the linkage rods 536 drive the corresponding locking plug 535 to retract into the interior of the locking piece 532.

[0067] The pulling mechanism 1 then continues to move downwards, causing the L-shaped component 52 to move downwards relative to the trigger slider 531. This causes the L-shaped component 52, the synchronous frame 3, and the moving plate 512 to move downwards synchronously. The moving plate 512 causes the sliding guide pin 5344 to move downwards along the waist-shaped groove 5343. This causes the waist-shaped groove 5343 to push the sliding guide pin 5344, causing the horizontal section of the locking component 532 to exit from the inside of the rectangular hole 533. Then, while lowering the synchronous frame 3, the operator manually pulls the L-shaped component 52 away from the center of the pulling mechanism 1, causing the precast solid square pile to fall to the stacking position.

[0068] It should be noted that rolling rollers are rotatably installed on both the upper and lower sides of the trigger slider 531, thereby reducing the friction between the trigger slider 531 and the ground and the precast solid square pile.

[0069] The present invention further includes the following steps when transporting and stacking precast solid square piles: First, the upper part of the traction mechanism 1 is placed at the lower part of the lifting equipment, and then the two clamping plates 41 are moved to the left and right sides of the precast solid square pile by moving the traction mechanism 1. Then, the traction mechanism 1 is lifted to clamp the two clamping plates 41 onto the precast solid square pile.

[0070] The second step involves pushing the spring to make the floating clamp 42 fit tightly against the side of the precast solid square pile through its own elastic force. The traction mechanism 1 is then raised further, causing the wedge block 4322 to drive the floating clamp 42 to further press against the precast solid square pile, ensuring clamping stability. The traction mechanism 1 is then raised further, causing the traction mechanism 1 to move upward against the precast solid square pile through the clamping plate 41 and the floating clamp 42.

[0071] Third, under the action of gravity, the L-shaped component 52 pulls the moving plate 512 to keep its height constant, so that the fixed column 513 moves downward along the trajectory of the inclined guide groove 511. The fixed column 513 drives the L-shaped component 52 to move towards the middle of the traction mechanism 1, so that the horizontal section of the L-shaped component 52 moves to the bottom of the precast solid square pile, thereby allowing the L-shaped component 52 to protect the precast solid square pile through its horizontal section.

[0072] In the fourth step, when the precast solid square pile slides to the upper part of the horizontal section of the L-shaped piece 52, the precast solid square pile presses down to trigger the slider 531, so that the horizontal section of the locking piece 532 is inserted into the interior of the corresponding rectangular hole 533. At the same time, the locking plug 535 abuts against the side wall of the groove on the rectangular hole 533 through its vertical section, so that the moving plate 512 drives the L-shaped piece 52 and the synchronous frame 3 to lock into a whole.

[0073] In the fifth step, the pull plate 5341 pushes the clamping plate 41 to move downward in sync with the push block 541, so that the locking tooth 4321 pushes the wedge block 4322 to drive the floating clamping plate 42 to move again towards the middle of the pulling mechanism 1, thereby increasing the clamping force of the floating clamping plate 42 on the precast solid square pile, and further increasing the stability of the precast solid square pile when it slips off onto the L-shaped piece 52.

[0074] Step 6: The precast solid square piles that have not slipped are moved to the stacking position. The L-shaped piece 52 is moved to the two sides of the precast solid square piles under the push of the ground or other precast solid square pile reaction force. Then the precast solid square piles are moved down to the stacking position so that the clamping plate 41 and the floating clamping plate 42 no longer clamp the precast solid square piles.

[0075] Step 7: The precast solid square piles that have slid off the L-shaped piece 52 are moved to the stacking position. The pulling mechanism 1 drives the lower side of the trigger slider 531 to abut against the stacking position. Then, the operator manually presses the unlocking plate 537 into the locking piece 532, so that the linkage rod 536 drives the corresponding locking plug 535 to retract into the interior of the locking piece 532.

[0076] Step 8: Continue to move the pulling mechanism 1 downwards so that the horizontal section of the locking piece 532 exits from the inside of the rectangular hole 533. Then, while lowering the synchronous frame 3, the operator manually pulls the L-shaped piece 52 away from the middle of the pulling mechanism 1, so that the precast solid square pile falls to the stacking position.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered within the protection scope of the present invention.

Claims

1. A concrete product stacking clamp, comprising a pulling mechanism, wherein two rectangular tubes symmetrically arranged on the pulling mechanism are slidably mounted on the pulling mechanism, and the pulling mechanism drives the two rectangular tubes to move synchronously in opposite directions, characterized in that, A synchronous frame is fixedly installed on the lower part of the rectangular tube away from the middle of the traction mechanism. The synchronous frame and the rectangular tube are jointly provided with a clamping mechanism for clamping the concrete product. A falling-off mechanism is provided at the lower part of the synchronous frame to prevent the concrete from falling off. The clamping mechanism includes a clamping plate that is slidably disposed on the side of the synchronous frame near the middle of the traction mechanism. Several floating clamping plates are evenly spaced on the clamping plate along the front-back direction. The floating clamping plates slide along the thickness direction of the clamping plate. Several anti-slip protrusions are provided on the side of the floating clamping plates near the middle of the traction mechanism. A push spring is provided between the floating clamping plates and the clamping plate. A limiting component for locking the floating clamping plates is provided on both the clamping plate and the rectangular tube. The anti-fall-off mechanism includes an L-shaped component set at the lower part of the synchronous frame via a movable component. The horizontal section of the L-shaped component is located between two clamping plates on the side near the middle of the traction mechanism. The anti-fall-off mechanism also includes a position locking component for locking the position of the L-shaped component. The position locking component locks the position of the L-shaped component to prevent the precast solid square pile from falling off. The limiting component includes a T-shaped plate fixedly installed on the lower part of the rectangular tube near the middle of the traction mechanism. A tension spring is provided between the rectangular tube and the clamping plate. The lower part of the horizontal section of the T-shaped plate pushes the floating clamping plate towards the middle of the traction mechanism through the locking part. The locking part includes several sets of locking teeth that are equally spaced along the front-back direction and are located at the bottom of the horizontal section of the T-shaped plate, corresponding to the floating clamping plate. Each set consists of two locking teeth that are symmetrically arranged on the front and back sides of the floating clamping plate at the corresponding positions. Wedge-shaped blocks are provided on the front and back sides of the floating clamping plate at the positions corresponding to the locking teeth. The inclined surface of the wedge block is located at its lower part and faces away from the middle of the traction mechanism. The locking teeth on the locking teeth are located at the lower part of the corresponding wedge block, and the inclined surface of the locking teeth at the corresponding position is arranged opposite to the inclined surface of the wedge block. The moving component includes two inclined guide slots arranged vertically and extending through the synchronous frame. The inclined guide slots gradually slope downwards towards the side closer to the middle of the traction mechanism. A moving plate is provided inside the synchronous frame. Two fixed columns are fixedly installed on the upper part of the moving plate, and the fixed columns slide in the inclined guide slots at the corresponding positions.

2. The concrete product stacking clamp according to claim 1, characterized in that, The movable plate is slidably connected to the vertical section of the L-shaped component on the side away from the middle of the traction mechanism. Two bolts are arranged vertically on the vertical section of the L-shaped component. Several positioning holes are equally spaced along the vertical direction on the movable plate. The L-shaped component is locked to the movable plate as a whole by bolts.

3. A concrete product stacking clamp according to claim 2, characterized in that, The position locking assembly includes a trigger slider that slides up and down on the horizontal section of the L-shaped component. A second tension spring is provided between the trigger slider and the L-shaped component. Two locking components that are symmetrically arranged in an L-shape are slidably mounted on the moving plate. A rectangular hole is provided at the bottom of the synchronization frame for the horizontal section of the locking component to be inserted. The position locking assembly also includes a trigger part for moving the locking components.

4. A concrete product stacking clamp according to claim 3, characterized in that, The position locking assembly also includes two locking plugs symmetrically arranged vertically on the horizontal section of the locking member. The locking plugs are in the shape of a right trapezoid. A linkage support rod is fixedly installed inside the locking plug. An unlocking plate is slidably arranged inside the horizontal section of the locking member. A V-shaped opening groove is provided on the unlocking plate. Grooves for the locking plugs to extend into are provided on the upper and lower side walls of the rectangular hole. A helical spring is provided between the two corresponding locking plugs.

5. A concrete product stacking clamp according to claim 4, characterized in that, The triggering part includes a pull plate fixedly installed on the upper side of the middle of the triggering slider. A sliding plate is slidably arranged on the lower part of the moving plate near the middle of the pulling mechanism. The sliding plate is fixedly connected to the pull plate by a locking screw. Two symmetrically arranged waist-shaped grooves are opened on the sliding plate. A sliding guide pin is provided at the lower part of the locking member, which extends out of the moving plate and slides inside the corresponding waist-shaped groove.

6. A concrete product stacking clamp according to claim 5, characterized in that, A U-shaped plate is fixedly installed on the upper part of the pull plate. The two vertical sections of the U-shaped plate are slidably connected to the clamping plate at the corresponding positions. A pushing block is slidably connected to the vertical section on the front side of the U-shaped plate by fixing screws. The pushing block is located on the upper part of the clamping plate.

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