A concrete test piece stacking machine

Abstract

The present application relates to the technical field of stacking machine, specifically to a concrete test piece stacking machine, which comprises a concrete test piece conveying assembly, a test piece conveying frame and a test piece pusher arranged at one end of the test piece conveying frame; a tray conveying assembly, a tray conveying frame and a tray pusher arranged at one end of the tray conveying frame; a test piece and tray combination assembly, a test piece clamping assembly arranged at the top of the test piece conveying frame and a combination mechanism arranged between the test piece pusher and the tray pusher; a curing frame, which comprises arrayed support rods; a stacking walking machine arranged at one side of the curing frame; the combination mechanism is arranged, after the tray pusher pushes the tray into the combination mechanism, the test piece clamping assembly places three test pieces on the tray, then the tray with the test pieces is supported by rotating the turnover frame, finally the tray is lifted by the stacking walking machine and placed into the curing frame, thereby improving the stacking efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stacking machines, in particular to a concrete test piece stacking machine. BACKGROUND

[0002] Before concrete construction, a concrete test piece is set up to test the performance indicators of the concrete, to ensure that the quality of the concrete meets the design requirements. Specifically, the test piece can be used to detect the strength, compressive resistance, impermeability, and frost resistance of the concrete, which are important standards for judging whether the concrete is qualified.

[0003] After the concrete test piece is poured, it needs to be maintained, and during this process, the operator needs to stack the concrete test piece on the shelves in the curing room. The traditional stacking method mainly relies on manual operation, which is not only inefficient, but also labor-intensive and prone to errors. SUMMARY

[0004] The purpose of the present application is to solve the above-mentioned deficiencies, and to provide a concrete test piece stacking machine.

[0005] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0006] A concrete test piece stacking machine, comprising:

[0007] A concrete test piece conveying assembly, comprising a test piece conveying frame and a test piece pusher arranged at one end of the test piece conveying frame, for conveying concrete test pieces, and a placing area is arranged on the side of the test piece conveying frame close to the test piece pusher;

[0008] A pallet conveying assembly, comprising a pallet conveying frame and a pallet pusher arranged at one end of the pallet conveying frame, for conveying pallets;

[0009] A test piece and pallet combination assembly, comprising a test piece clamping assembly arranged on the top of the test piece conveying frame, and a combination mechanism arranged between the test piece pusher and the pallet pusher, for placing the arranged concrete test pieces on the pallets;

[0010] A curing shelf, comprising arrayed support rods and curing support shelves arranged on the support rods, for receiving pallets containing test pieces;

[0011] A stacking walking machine arranged on one side of the curing shelf, for placing the pallets containing test pieces in the curing shelf.

[0012] Further, the stacking walking machine comprises a first walking track, a stand column is slidingly arranged on the first walking track, a walking motor is installed at the bottom of the stand column, a walking gear is arranged at the output end of the walking motor, a walking rack is arranged on the inner wall of the first walking track and matched with the walking gear, a lifting frame is slidingly arranged on the stand column, and a fork is arranged on the lifting frame.

[0013] Furthermore, the forks include fixed fork arms mounted on the lifting frame, a transverse beam slidably mounted inside the fixed fork arms, a movable fork arm slidably mounted on the transverse beam, and a bracket mounted on the movable fork arm.

[0014] Furthermore, the transverse beam includes a transverse frame located within the fixed fork arm, a transverse rack is provided at the bottom of the transverse frame, a fixed plate is provided at the bottom of the lifting frame, a transverse motor is mounted on the fixed plate, an intermediate gear is connected to the output end of the transverse motor, drive gears are meshed on both sides of the intermediate gear, the drive gears are rotatably connected to the fixed plate, and the drive gears mesh with the transverse rack.

[0015] The transverse frame is connected to the fixed fork arm via a first guide wheel, and to the movable fork arm via a second guide wheel. A sprocket is rotatably mounted on one end of the transverse frame, and a chain is fitted on the sprocket. One end of the chain is connected to the fixed fork arm via a first connecting block, and the other end of the chain is connected to the movable fork arm via a second connecting block.

[0016] Furthermore, a bidirectional threaded rod is rotatably provided inside the bracket, with tightening plates sleeved at both ends of the bidirectional threaded rod, and fixed sleeves provided at both ends of the tightening plates. Movable limiting posts are movably provided on the fixed sleeves, and limiting springs connected to the movable limiting posts are provided inside the fixed sleeves.

[0017] Furthermore, the pallet pusher includes a mounting platform disposed at one end of the pallet conveyor frame, a lead screw rotatably disposed inside the mounting platform, a connecting rod disposed at one end of the lead screw, a top plate disposed at one end of the connecting rod for pushing the pallet, and a limiting slider sleeved on the lead screw at the other end of the connecting rod.

[0018] The specimen pusher includes a first hydraulic rod installed on one side of the placement area, and a push plate is connected to the movable end of the first hydraulic rod.

[0019] Furthermore, the specimen clamping assembly includes a second traveling track located at the top of the specimen conveying frame, a traveling frame slidably arranged in the second traveling track, a second hydraulic rod arranged in the traveling frame, a clamping frame arranged at the bottom end of the second hydraulic rod, a plurality of clamping mechanisms arranged in the clamping frame, and an equidistant adjustment component arranged on the clamping mechanism.

[0020] Furthermore, the clamping mechanism includes a clamping beam located within the clamping frame, a fixed clamping plate is provided on the clamping beam, and a movable clamping plate that is slidably connected to the clamping beam is provided on one side of the fixed clamping plate.

[0021] The equidistant adjustment assembly includes a lifting rod located at the top of the clamping mechanism, a telescopic rod installed inside the clamping frame, the movable end of the telescopic rod being connected to the lifting rod, a first movable block being sleeved on the lifting rod, a movable rod being rotatably installed at the bottom end of the first movable block, a second movable block being rotatably installed at the bottom end of the movable rod, the second movable block being fixed on the clamping beam, a fixed rod being installed at the bottom of the lifting rod, and the second movable block being sleeved on the fixed rod.

[0022] Furthermore, the combined mechanism includes a worktable with a working cavity inside. Four flipping frames are rotatably arranged at the four corners of the working cavity. A synchronizing rod is arranged between two oppositely arranged flipping frames. A support plate is rotatably arranged at the end of the flipping frame away from the synchronizing rod. A combined platform is arranged on the support plate. A roller is arranged at one end of the synchronizing rod. Two rollers are connected by a conveyor belt drive.

[0023] Furthermore, the assembly platform includes a fixed frame fixed to a support plate, a movable frame slidably mounted on the fixed frame, a return spring between the movable frame and the fixed frame, incomplete gears rotatably mounted at both ends of the fixed frame, positioning clamps mounted on the incomplete gears, and tooth grooves meshing with the incomplete gears at both ends of the movable frame.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] This invention features a combination mechanism. After the pallet pusher pushes the pallet onto the combination mechanism, the specimen clamping assembly places three specimens on the pallet. Then, the rotation of the flipping frame supports the pallet containing the specimens. Finally, the pallet is lifted by the pallet walking machine and placed into the curing rack, thus improving palletizing efficiency. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the palletizing walking machine of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the horizontal fork of the present invention;

[0030] Figure 4 This is a schematic diagram of the transverse beam structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the bracket of the present invention;

[0032] Figure 6 This is a schematic diagram showing the connection between the specimen conveying frame and the assembly mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the pallet conveyor frame of the present invention;

[0034] Figure 8 This is a schematic diagram of the specimen conveying frame of the present invention;

[0035] Figure 9 This is a schematic diagram of the specimen clamping assembly of the present invention;

[0036] Figure 10 This is a schematic diagram of the combined mechanism of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of the assembly platform of the present invention.

[0038] In the diagram: 1. Palletizing walking machine; 11. First walking track; 12. Column; 13. Walking motor; 14. Walking rack; 15. Lifting frame; 151. Fixed plate; 152. Transverse motor; 153. Intermediate gear; 154. Drive gear; 16. Fork; 161. Fixed fork arm; 162. Transverse beam; 1621. Transverse frame; 1622. Transverse rack; 1623. First guide wheel; 162 4. Second guide wheel; 1625. Sprocket; 1626. Chain; 1627. First connecting block; 1628. Second connecting block; 163. Movable fork arm; 164. Bracket; 1641. Tensioning plate; 1642. Fixed sleeve; 1643. Movable limit post; 2. Pallet conveyor; 3. Specimen conveyor; 31. Placement area; 4. Pallet pusher; 41. Mounting platform; 42. Lead screw; 43. Connecting rod ; 44. Top plate; 45. Limiting slider; 5. Specimen pusher; 51. First hydraulic rod; 52. Push plate; 6. Specimen clamping assembly; 61. Second traveling track; 62. Traveling frame; 63. Second hydraulic rod; 64. Clamping frame; 641. Telescopic rod; 65. Lifting rod; 66. First moving block; 67. Movable rod; 68. Second moving block; 681. Fixed rod; 69. Clamping beam; 610. Fixed clamping plate; 611. Movable clamping plate; 7. Combined mechanism; 71. Workbench; 72. Tilting frame; 73. Synchronizing rod; 74. Support plate; 75. Roller; 76. Conveyor belt; 77. Combined platform; 771. Fixed frame; 772. Movable frame; 7721. Gear; 773. Return spring; 774. Incomplete gear; 775. Positioning clamping plate; 8. Curing frame; 81. Support rod; 82. Curing support frame. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] Reference Figures 1-11 As shown, a concrete specimen stacking machine includes:

[0042] A concrete specimen conveying assembly includes a specimen conveying frame 3 and a specimen pusher 5 disposed at one end of the specimen conveying frame 3. A placement area 31 is provided on the side of the specimen conveying frame 3 near the specimen pusher 5.

[0043] Concrete specimens are transported in groups of three to the placement area 31 via the specimen conveyor 3. Then, the specimen pusher 5 pushes the three specimens to one end of the placement area 31 so that the three specimens are close together.

[0044] The pallet conveying assembly includes a pallet conveying frame 2 and a pallet pusher 4 located at one end of the pallet conveying frame 2 for conveying pallets; wherein the pallet has two partitions in the middle, forming three placement cavities;

[0045] The specimen and pallet assembly includes a specimen clamping assembly 6 located at the top of the specimen conveying frame 3, and a combination mechanism 7 located between the specimen pusher 5 and the pallet pusher 4, for placing the arranged concrete specimens on the pallet, wherein the pallet pusher 4 is slightly higher than the combination mechanism 7.

[0046] Previously, the specimen was pushed to one end of the placement area 31 by the specimen pusher 5. The specimen clamping component 6 is located at the end of the placement area 31, that is, above the specimen, and is equipped with three clamping mechanisms. The spacing between the clamping mechanisms is adjustable. First, it clamps the middle of the three specimens, and then adjusts the spacing between the three specimens according to the size of the partition in the tray, and accurately places them in the tray.

[0047] The curing frame 8 includes an array of support rods 81 and a curing support frame 82 arrayed on the support rods 81 for storing a tray containing test specimens.

[0048] Since the top of the tray flares outwards, when placing the tray, simply insert the top of the tray along the maintenance support frame 82.

[0049] The palletizing machine 1 is located on one side of the curing frame 8 and is used to place the pallet containing the test specimens into the curing frame 8.

[0050] In one embodiment, the palletizing walking machine 1 includes a first walking track 11, a column 12 slidably disposed on the first walking track 11, a walking motor 13 installed at the bottom of the column 12, a walking gear disposed at the output end of the walking motor 13, a walking rack 14 cooperating with the walking gear disposed on the inner wall of the first walking track 11, a lifting frame 15 slidably disposed on the column 12, and a fork 16 disposed on the lifting frame 15; wherein the fork 16 can extend to both sides, which is to facilitate picking up pallets and subsequently inserting the pallets into the curing frame 8.

[0051] In one embodiment, the fork 16 includes a fixed fork arm 161 disposed on the lifting frame 15, a transverse beam 162 slidably disposed within the fixed fork arm 161, a movable fork arm 163 slidably disposed on the transverse beam 162, and a bracket 164 disposed on the movable fork arm 163 for supporting a pallet containing test specimens.

[0052] When picking up and placing the pallet, the transverse beam 162 moves outward. When the transverse beam 162 slides, the movable fork arm 163 at its upper end also slides along the surface of the transverse beam 162, exchanging the small stroke of the transverse beam 162 for the large stroke of the movable fork arm 163.

[0053] In one embodiment, the transverse beam 162 includes a transverse frame 1621 located within the fixed fork arm 161. A transverse rack 1622 is provided at the bottom of the transverse frame 1621. Here, two transverse frames 1621 are provided on both sides of the transverse rack 1622. A fixed plate 151 is provided at the bottom of the lifting frame 15. A transverse motor 152 is mounted on the fixed plate 151. An intermediate gear 153 is connected to the output end of the transverse motor 152. Drive gears 154 mesh on both sides of the intermediate gear 153. The drive gears 154 are rotatably connected to the fixed plate 151 and mesh with the transverse rack 1622.

[0054] The transverse frame 1621 is connected to the fixed fork arm 161 via the first guide wheel 1623, and the transverse frame 1621 is connected to the movable fork arm 163 via the second guide wheel 1624. A sprocket 1625 is rotatably mounted on one end of the transverse frame 1621, and a chain 1626 is mounted on the sprocket 1625. One end of the chain 1626 is connected to the fixed fork arm 161 via the first connecting block 1627, and the other end of the chain 1626 is connected to the movable fork arm 163 via the second connecting block 1628. Here, two sets of sprockets 1625 and chains 1626 are provided, respectively mounted on the two transverse frames 1621, and the two sets are arranged in opposite directions, mainly to facilitate the sliding of the movable fork arm 163 to both sides.

[0055] When a pallet needs to be picked up or placed, the transverse motor 152 drives the intermediate gear 153 to rotate, which in turn drives the drive gears 154 on both sides to rotate together. This drives the transverse beam 162 to slide along the fixed fork arm 161. Specifically, the transverse frame 1621 moves along the fixed fork arm 161 via the first guide wheel 1623 on the side wall. When the transverse beam 162 moves, it also drives the sprocket 1625 to move together. Since one end of the chain 1626 is fixedly connected to the fixed fork arm 161, the other end of the chain 1626 will move twice as much under the pull of the sprocket 1625. The other end of the chain 1626 is connected to the movable fork arm 163, which allows the movable fork arm 163 to slide along the surface of the transverse beam 162, allowing the movable fork arm 163 to travel a greater distance.

[0056] In one embodiment, a bidirectional threaded rod is rotatably provided inside the bracket 164, and a tightening plate 1641 is sleeved at both ends of the bidirectional threaded rod. A fixing sleeve 1642 is provided at both ends of the tightening plate 1641, and a movable limiting post 1643 is movably provided on the fixing sleeve 1642. A limiting spring connected to the movable limiting post 1643 is provided inside the fixing sleeve 1642.

[0057] After the concrete specimen is placed on the tray, it needs to be removed by the bracket 164. At this time, the bracket 164 extends along the bottom of the tray, and the movable limiting post 1643 retracts inward under the pressure of the tray. Then the bracket 164 continues to go deeper until the compressed movable limiting post 1643 extends out from the other end of the tray. Then the bracket 164 lifts the tray and rotates the double-threaded rod to move the tightening plates 1641 at both ends inward to fix and clamp the tray.

[0058] In one embodiment, the pallet pusher 4 includes a mounting platform 41 disposed at one end of the pallet conveyor 2. A lead screw 42 is rotatably disposed inside the mounting platform 41. A connecting rod 43 is disposed at one end of the lead screw 42. A top plate 44 for pushing the pallet is disposed at one end of the connecting rod 43. A limiting slider 45 sleeved on the lead screw 42 is disposed at the other end of the connecting rod 43. After the pallet moves to the end along the pallet conveyor 2, the lead screw 42 rotates, and the top plate 44 is driven by the connecting rod 43 to push the pallet, so that the pallet enters the combination mechanism 7.

[0059] The specimen pusher 5 includes a first hydraulic rod 51 installed on one side of the placement area 31. The movable end of the first hydraulic rod 51 is connected to a push plate 52. Three specimens are conveyed together. After moving into the placement area 31, the first hydraulic rod 51 pushes the push plate 52. The push plate 52 pushes the three specimens side by side to the other end of the placement area 31, that is, below the specimen clamping assembly 6. The specimen that is far away from the push plate 52 is designated as the first one.

[0060] In one embodiment, the specimen clamping assembly 6 includes a second traveling track 61 located at the top of the specimen conveying frame 3. A traveling frame 62 is slidably disposed within the second traveling track 61. A second hydraulic rod 63 is disposed within the traveling frame 62. A clamping frame 64 is disposed at the bottom end of the second hydraulic rod 63. Three clamping mechanisms are disposed within the clamping frame 64. The clamping mechanism closest to the end, that is, located directly above the first specimen, is fixed, while the other two clamping mechanisms are movable. An equidistant adjustment assembly is disposed between the clamping mechanisms. According to the size of the specimen, the distance between each clamping mechanism can be adjusted first, so that two clamping mechanisms can clamp at the same position on the surface of the specimen, which facilitates subsequent adjustment of the distance between the three specimens.

[0061] In one embodiment, the clamping mechanism includes a clamping beam 69 located within the clamping frame 64, a fixed clamping plate 610 is provided on the clamping beam 69, a movable clamping plate 611 is provided on one side of the fixed clamping plate 610 and slidably connected to the clamping beam 69, and a driving hydraulic cylinder for pushing the movable clamping plate 611 is provided on the side of the movable clamping plate 611 away from the fixed clamping plate 610.

[0062] The equidistant adjustment assembly includes a lifting rod 65 located at the top of the clamping mechanism, a telescopic rod 641 disposed inside the clamping frame 64, the movable end of the telescopic rod 641 being connected to the lifting rod 65, a first moving block 66 being sleeved on the lifting rod 65, a movable rod 67 being rotatably disposed at the bottom end of the first moving block 66, a second moving block 68 being rotatably disposed at the bottom end of the movable rod 67, the second moving block 68 being fixed on the clamping beam 69, a fixed rod 681 being disposed at the bottom of the lifting rod 65, and the second moving block 68 being sleeved on the fixed rod 681;

[0063] After the clamping mechanism fixes and clamps the specimen, it is adjusted according to the size of the partition inside the tray. That is, the telescopic rod 641 pushes the lifting rod 65 downward, the lifting rod 65 moves down and pushes the movable rod 67, so that the bottom end of the movable rod 67 opens to both sides to complete the spacing adjustment. Finally, it moves to the top of the tray and the specimen is placed in the tray.

[0064] In one embodiment, the assembly mechanism 7 includes a worktable 71, a working cavity is provided in the worktable 71, four flipping frames 72 are rotatably arranged at the four corners of the working cavity, a synchronizing rod 73 is provided between two opposite flipping frames 72, a support plate 74 is rotatably arranged at the end of the flipping frame 72 away from the synchronizing rod 73, an assembly platform 77 is provided on the support plate 74, a roller 75 is provided at one end of the synchronizing rod 73, and two rollers 75 are connected by a conveyor belt 76.

[0065] First, the tray is placed on the assembly table 77, then the specimen is placed in the tray. At this time, the roller 75 is rotated so that all the flipping frames 72 rotate synchronously, keeping the flipping frames 72 in a vertical position, thereby supporting the tray. Then the bracket 164 can extend from between the flipping frames 72 to lift the tray.

[0066] In one embodiment, when the flipping frame 72 rotates upward, in order to maintain the stability of the tray, the combination platform 77 is also given a certain guarantee. The combination platform 77 includes a fixed frame 771 fixed on the support plate 74, a movable frame 772 slidably disposed on the fixed frame 771, a return spring 773 disposed between the movable frame 772 and the fixed frame 771, an incomplete gear 774 rotatably disposed at both ends of the fixed frame 771, a positioning clamp 775 disposed on the incomplete gear 774, and a tooth groove 7721 that meshes with the incomplete gear 774 at both ends of the movable frame 772.

[0067] When the tray is pushed in, the tray moves inward along the movable frame 772. Due to the light weight of the tray, the movable frame 772 will not move downward. However, after the specimen is placed in, the movable frame 772 will move downward, compressing the return spring 773. At the same time, the movable frame 772 will also drive the incomplete gear 774 to rotate, causing the positioning clamp 775 to flip inward and clamp the four corners of the tray, thus limiting the tray. This way, the stability of the tray can be maintained when the rotating frame 72 is rotated upward. When the bracket 164 extends in and lifts the tray, the movable frame 772 will also move upward as the tray is lifted, which will drive the incomplete gear 774 to rotate back, causing the positioning clamp 775 to flip outward and return to the initial position.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A concrete specimen stacking machine, characterized in that, include: The concrete specimen conveying assembly includes a specimen conveying frame (3) and a specimen pusher (5) located at one end of the specimen conveying frame (3) for conveying concrete specimens. A placement area (31) is provided on the side of the specimen conveying frame (3) near the specimen pusher (5). The pallet conveying assembly includes a pallet conveyor frame (2) and a pallet pusher (4) located at one end of the pallet conveyor frame (2) for conveying pallets; The specimen and pallet assembly includes a specimen clamping assembly (6) located on top of the specimen conveyor (3) and a combination mechanism (7) located between the specimen pusher (5) and the pallet pusher (4) for placing the arranged concrete specimens on the pallet; The curing frame (8) includes an array of support rods (81) and a curing support frame (82) arrayed on the support rods (81) for storing a tray containing the specimen; A palletizing walking machine (1) is set on one side of the curing frame (8) and is used to place the tray containing the test specimens into the curing frame (8); The palletizing walking machine (1) includes a first walking track (11), a column (12) is slidably arranged on the first walking track (11), a walking motor (13) is installed at the bottom of the column (12), a walking gear is provided at the output end of the walking motor (13), a walking rack (14) that cooperates with the walking gear is provided on the inner wall of the first walking track (11), a lifting frame (15) is slidably arranged on the column (12), and a fork (16) is provided on the lifting frame (15). The fork (16) includes a fixed fork arm (161) mounted on the lifting frame (15), a transverse beam (162) is slidably mounted inside the fixed fork arm (161), a movable fork arm (163) is slidably mounted on the transverse beam (162), and a bracket (164) is mounted on the movable fork arm (163). The transverse beam (162) includes a transverse frame (1621) located inside the fixed fork arm (161). A transverse rack (1622) is provided at the bottom of the transverse frame (1621). A fixed plate (151) is provided at the bottom of the lifting frame (15). A transverse motor (152) is installed on the fixed plate (151). An intermediate gear (153) is connected to the output end of the transverse motor (152). Drive gears (154) mesh on both sides of the intermediate gear (153). The drive gears (154) are rotatably connected to the fixed plate (151), and the drive gears (154) mesh with the transverse rack (1622). The transverse frame (1621) is connected to the fixed fork arm (161) via the first guide wheel (1623), and the transverse frame (1621) is connected to the movable fork arm (163) via the second guide wheel (1624). A sprocket (1625) is rotatably provided at one end of the transverse frame (1621), and a chain (1626) is sleeved on the sprocket (1625). One end of the chain (1626) is connected to the fixed fork arm (161) via the first connecting block (1627), and the other end of the chain (1626) is connected to the movable fork arm (163) via the second connecting block (1628).

2. The concrete specimen stacking machine according to claim 1, characterized in that, The bracket (164) is rotatably provided with a bidirectional threaded rod, and a tightening plate (1641) is sleeved on both ends of the bidirectional threaded rod. A fixed sleeve (1642) is provided on both ends of the tightening plate (1641). A movable limiting post (1643) is movably provided on the fixed sleeve (1642). A limiting spring connected to the movable limiting post (1643) is provided inside the fixed sleeve (1642).

3. A concrete specimen stacking machine according to claim 1, characterized in that, The pallet pusher (4) includes a mounting platform (41) disposed at one end of the pallet conveyor (2), a lead screw (42) is rotatably disposed inside the mounting platform (41), a connecting rod (43) is disposed at one end of the lead screw (42), a top plate (44) for pushing the pallet is disposed at one end of the connecting rod (43), and a limiting slider (45) sleeved on the lead screw (42) is disposed at the other end of the connecting rod (43). The specimen pusher (5) includes a first hydraulic rod (51) installed on one side of the placement area (31), and the movable end of the first hydraulic rod (51) is connected to a push plate (52).

4. A concrete specimen stacking machine according to claim 1, characterized in that, The specimen clamping assembly (6) includes a second traveling track (61) located at the top of the specimen conveying frame (3), a traveling frame (62) is slidably arranged in the second traveling track (61), a second hydraulic rod (63) is arranged in the traveling frame (62), a clamping frame (64) is arranged at the bottom end of the second hydraulic rod (63), a plurality of clamping mechanisms are arranged in the clamping frame (64), and an equidistant adjustment component is arranged on the clamping mechanism.

5. A concrete specimen stacking machine according to claim 4, characterized in that, The clamping mechanism includes a clamping beam (69) located in the clamping frame (64), a fixed clamping plate (610) is provided on the clamping beam (69), and a movable clamping plate (611) slidably connected to the clamping beam (69) is provided on one side of the fixed clamping plate (610). The equidistant adjustment assembly includes a lifting rod (65) located at the top of the clamping mechanism. A telescopic rod (641) is provided inside the clamping frame (64). The movable end of the telescopic rod (641) is connected to the lifting rod (65). A first moving block (66) is sleeved on the lifting rod (65). A movable rod (67) is rotatably provided at the bottom end of the first moving block (66). A second moving block (68) is rotatably provided at the bottom end of the movable rod (67). The second moving block (68) is fixed on the clamping beam (69). A fixed rod (681) is provided at the bottom of the lifting rod (65). The second moving block (68) is sleeved on the fixed rod (681).

6. A concrete specimen stacking machine according to claim 1, characterized in that, The combined mechanism (7) includes a workbench (71), a working cavity is provided in the workbench (71), four flipping frames (72) are rotatably arranged at the four corners of the working cavity, a synchronizing rod (73) is provided between two opposite flipping frames (72), a support plate (74) is rotatably arranged at the end of the flipping frame (72) away from the synchronizing rod (73), a combined platform (77) is provided on the support plate (74), a roller (75) is provided at one end of the synchronizing rod (73), and the two rollers (75) are connected by a conveyor belt (76).

7. A concrete specimen stacking machine according to claim 6, characterized in that, The assembly platform (77) includes a fixed frame (771) fixed on a support plate (74), a movable frame (772) slidably mounted on the fixed frame (771), a return spring (773) between the movable frame (772) and the fixed frame (771), an incomplete gear (774) rotatably mounted at both ends of the fixed frame (771), a positioning clamp (775) mounted on the incomplete gear (774), and tooth grooves (7721) meshing with the incomplete gear (774) at both ends of the movable frame (772).

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