Stacking machine for concrete test pieces

Abstract

The invention relates to the technical field of stackers, in particular to a concrete sample stacker which comprises a concrete sample conveying assembly, a concrete sample conveying assembly, a concrete sample conveying assembly, a concrete sample conveying assembly and a concrete sample conveying assembly, and the concrete sample conveying assembly comprises a sample conveying frame and a sample pushing machine arranged at one end of the sample conveying frame; the tray conveying assembly comprises a tray conveying frame and a tray pushing machine located at one end of the tray conveying frame. The test piece and tray combination assembly comprises a test piece clamping assembly arranged at the top of the test piece conveying frame and a combination mechanism arranged between the test piece pushing machine and the tray pushing machine; the maintenance frame comprises supporting rods distributed in an array mode. The stacking walking machine is arranged on one side of the maintenance frame; the combined mechanism is arranged, after the tray pushing machine pushes the tray onto the combined mechanism, the test piece clamping assembly places three test pieces on the tray, then the tray loaded with the test pieces is supported through rotation of the overturning frame, and finally the tray is lifted up through the stacking walking machine and placed into the curing frame, so that the stacking efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of palletizers, and in particular to a palletizer for concrete test pieces. Background Art

[0002] Before concrete construction, concrete specimens will be set up to test the performance indicators of concrete to ensure that the quality of concrete meets the design requirements. Specifically, specimens can be used to test the strength, compression resistance, impermeability, frost resistance and other key properties of concrete, which are important criteria for judging whether concrete is qualified.

[0003] After pouring, concrete specimens need to be cured. This process requires operators to stack concrete specimens 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 of the invention

[0004] The object of the present invention is to solve the above-mentioned shortcomings and provide a palletizer for concrete specimens.

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

[0006] A palletizer for concrete specimens, comprising:

[0007] The concrete specimen conveying assembly includes a specimen conveying frame and a specimen pusher arranged at one end of the specimen conveying frame, which is used to convey the concrete specimen. A placement area is arranged on one side of the specimen conveying frame close to the specimen pusher.

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

[0009] The specimen and tray combination assembly includes a specimen clamping assembly arranged on the top of the specimen conveying frame, and a combination mechanism arranged between the specimen pusher and the tray pusher, which is used to place the arranged concrete specimens on the tray;

[0010] A curing rack, comprising support rods distributed in an array, and a curing support rack arranged in an array on the support rods, for receiving a tray containing a test piece;

[0011] The palletizing walking machine is arranged on one side of the curing rack and is used to place the pallet with the test pieces in the curing rack.

[0012] Furthermore, the stacking walking machine includes a first walking track, a column is slidably arranged on the first walking track, a walking motor is installed at the bottom of the column, a walking gear is arranged at the output end of the walking motor, a walking rack matching the walking gear is arranged on the inner wall of the first walking track, a lifting frame is slidably arranged on the column, and a fork is arranged on the lifting frame.

[0013] Furthermore, the cargo fork comprises a fixed fork arm arranged on the lifting frame, a transverse beam is slidably arranged in the fixed fork arm, a movable fork arm is slidably arranged on the transverse beam, and a bracket is arranged on the movable fork arm.

[0014] Further, the transverse beam includes a transverse frame located in 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 installed on the fixed plate, an output end of the transverse motor is connected to an intermediate gear, two sides of the intermediate gear are meshed with driving gears, the driving gear is rotatably connected to the fixed plate, and the driving gear is meshed with the transverse rack;

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

[0016] Furthermore, a bidirectional threaded rod is rotatably arranged in the bracket, tightening plates are sleeved on both ends of the bidirectional threaded rod, fixed sleeves are arranged at both ends of the tightening plates, a movable limiting column is movably arranged on the fixed sleeve, and a limiting spring connected to the movable limiting column is arranged in the fixed sleeve.

[0017] Furthermore, the pallet pusher includes a mounting platform arranged at one end of the pallet conveyor frame, a lead screw is rotatably arranged in the mounting platform, a connecting rod is arranged at one end of the lead screw, a top plate for pushing the pallet is arranged at one end of the connecting rod, and a limit slider sleeved on the lead screw is arranged at the other end of the connecting rod;

[0018] The specimen pusher comprises a first hydraulic rod installed at 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 walking track located at the top of the specimen conveying frame, a walking frame is slidably arranged in the second walking track, a second hydraulic rod is arranged in the walking frame, a clamping frame is arranged at the bottom end of the second hydraulic rod, a plurality of clamping mechanisms are arranged in the clamping frame, and an equidistant adjustment assembly is arranged on the clamping mechanism.

[0020] Furthermore, the clamping mechanism comprises a clamping beam located in the clamping frame, a fixed clamping plate is arranged on the clamping beam, and a movable clamping plate slidably connected to the clamping beam is arranged on one side of the fixed clamping plate;

[0021] The equidistant adjustment component includes a lifting rod located at the top of the clamping mechanism, a telescopic rod is arranged in the clamping frame, the movable end of the telescopic rod is connected to the lifting rod, a first moving block is sleeved on the lifting rod, a movable rod is rotatably arranged at the bottom end of the first moving block, a second moving block is rotatably arranged at the bottom end of the movable rod, the second moving block is fixed on the clamping beam, a fixed rod is arranged at the bottom of the lifting rod, and the second moving block is sleeved on the fixed rod.

[0022] Furthermore, the combined mechanism includes a workbench with a working chamber provided in the workbench, four turning frames being rotatably arranged at the four corners of the working chamber, a synchronization rod being arranged between two oppositely arranged turning frames, a support plate being rotatably arranged at one end of the turning frame away from the synchronization rod, a combined table being arranged on the support plate, a roller being arranged at one end of the synchronization rod, and the two rollers being connected by a conveyor belt transmission.

[0023] Furthermore, the combined platform includes a fixed frame fixed on the support plate, a movable frame is slidably arranged on the fixed frame, a return spring is arranged between the movable frame and the fixed frame, incomplete gears are rotatably arranged at both ends of the fixed frame, a positioning clamp is arranged on the incomplete gears, and tooth grooves meshing with the incomplete gears are arranged at both ends of the movable frame.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention is provided with a combined mechanism. After the pallet pusher pushes the pallet onto the combined mechanism, the specimen clamping assembly places three specimens on the pallet. Then, the pallet with the specimens is supported by the rotation of the turning frame. Finally, the pallet is lifted up by the stacking walking machine and placed in the curing rack, thereby improving the stacking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

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

[0029] Figure 3 It is a structural schematic diagram of the horizontal cargo fork of the present invention;

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

[0031] Figure 5 It is a structural schematic diagram of the bracket of the present invention;

[0032] Figure 6 It is a schematic diagram of the connection between the specimen conveying rack and the combined mechanism of the present invention;

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

[0034] Figure 8 It is a structural schematic diagram of the test piece conveying rack of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of the specimen clamping assembly of the present invention;

[0036] Fig.10 It is a structural schematic diagram of the combined mechanism of the present invention;

[0037] Fig.11 It is a structural schematic diagram of the combined platform of the present invention.

[0038] In the figure: 1, palletizing walking machine; 11, first walking track; 12, column; 13, walking motor; 14, walking rack; 15, lifting frame; 151, fixed plate; 152, traverse motor; 153, intermediate gear; 154, driving gear; 16, fork; 161, fixed fork arm; 162, traverse beam; 1621, traverse frame; 1622, traverse 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. Tightening plate; 1642. Fixed sleeve; 1643. Movable limit column; 2. Pallet conveyor; 3. Specimen conveyor; 31. Placement area; 4. Pallet pusher; 41. Mounting table; 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 walking track;62. Walking frame;63. Second hydraulic rod;64. Clamping frame;641. Telescopic rod;65. Lifting rod;66. First moving block;67. Active rod;68. Second moving block;681. Fixed rod;69. Clamping beam;610. Fixed splint;611. Active splint;7. Combined mechanism;71. Workbench;72. Turning frame;73. Synchronous rod;74. Support plate;75. Roller;76. Conveyor belt;77. Combined table;771. Fixed frame;772. Active frame;7721. Tooth groove;773. Reset spring;774. Incomplete gear;775. Positioning splint;8. Maintenance frame;81. Support rod;82. Maintenance support frame. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to 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 position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] Reference Figure 1-Figure 11 As shown, a palletizer for concrete specimens comprises:

[0042] The concrete specimen conveying assembly includes a specimen conveying frame 3 and a specimen pusher 5 arranged at one end of the specimen conveying frame 3, and a placement area 31 is arranged on one side of the specimen conveying frame 3 close to the specimen pusher 5;

[0043] The concrete specimens are grouped in three and conveyed to the placement area 31 by the specimen conveying rack 3. At this time, the three specimens are pushed to one end of the placement area 31 by the specimen pushing machine 5 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, and is used to convey the pallet; wherein two partitions are arranged in the middle of the pallet to form three placement cavities;

[0045] The specimen and tray assembly includes a specimen clamping assembly 6 disposed on the top of the specimen conveying frame 3, and a combination mechanism 7 disposed between the specimen pusher 5 and the tray pusher 4, which is used to place the arranged concrete specimens on the tray, wherein the tray 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. Here, the specimen clamping assembly 6 is located at the end of the placement area 31, that is, above the specimen, and is provided with three clamping mechanisms. The spacing between the clamping mechanisms is adjustable. First, the specimens are clamped in the middle of the three specimens, and then the spacing between the three specimens is adjusted according to the size of the partition in the tray, and the specimens are accurately placed in the tray.

[0047] The curing frame 8 includes support rods 81 distributed in an array, and curing support frames 82 arranged in an array on the support rods 81, and is used to receive a tray containing a test piece;

[0048] Since the top of the tray is spread outward, when placing the tray, the top of the tray is inserted along the maintenance support frame 82;

[0049] The palletizing walking machine 1 is arranged at one side of the curing rack 8 and is used for placing the pallet with the test pieces in the curing rack 8 .

[0050] In one embodiment, the palletizing walking machine 1 includes a first walking track 11, on which a column 12 is slidably arranged, a walking motor 13 is installed at the bottom of the column 12, a walking gear is arranged at the output end of the walking motor 13, and a walking rack 14 matching the walking gear is arranged 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 arranged on the lifting frame 15; wherein the fork 16 can be extended to both sides, which is to facilitate the picking up of the pallet and the subsequent insertion of the pallet into the maintenance frame 8.

[0051] In one embodiment, the cargo fork 16 includes a fixed fork arm 161 disposed on the lifting frame 15, a transverse beam 162 is slidably disposed in the fixed fork arm 161, a movable fork arm 163 is slidably disposed on the transverse beam 162, a bracket 164 is disposed on the movable fork arm 163, and the bracket 164 is used to lift a pallet loaded with test pieces;

[0052] When taking or placing a pallet, the transverse beam 162 moves outward, and 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 in the fixed fork arm 161, and 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, and a transverse motor 152 is installed on the fixed plate 151. The output end of the transverse motor 152 is connected to an intermediate gear 153, and driving gears 154 are meshed on both sides of the intermediate gear 153. The driving gear 154 is rotatably connected to the fixed plate 151, and the driving gear 154 is meshed with the transverse rack 1622.

[0054] The transverse frame 1621 is connected to the fixed fork arm 161 through the first guide wheel 1623, and the transverse frame 1621 is connected to the movable fork arm 163 through 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 through the first connecting block 1627, and the other end of the chain 1626 is connected to the movable fork arm 163 through the second connecting block 1628. Two sets of sprockets 1625 and chains 1626 are provided here, which are respectively provided on the two transverse frames 1621, and the two sets are oppositely provided, mainly to facilitate the movable fork arm 163 to slide to both sides;

[0055] When it is necessary to pick up or place a pallet, the middle gear 153 is driven to rotate by the transverse motor 152, and the middle gear 153 drives the driving gears 154 on both sides to rotate together, thereby driving the transverse beam 162 to slide along the fixed fork arm 161. Specifically, the transverse frame 1621 moves along the fixed fork arm 161 through the first guide wheel 1623 on the side wall, and when the transverse beam 162 moves, it will drive the sprocket 1625 to move together. Since one end of the chain 1626 is fixedly connected to the fixed fork arm 161, under the pull of the sprocket 1625, the other end of the chain 1626 will produce double movement, and the other end of the chain 1626 is connected to the movable fork arm 163, so that the movable fork arm 163 can 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 disposed in the bracket 164, and tightening plates 1641 are sleeved at both ends of the bidirectional threaded rod. Fixed sleeves 1642 are disposed at both ends of the tightening plate 1641, and movable limiting columns 1643 are movably disposed on the fixed sleeves 1642. A limiting spring connected to the movable limiting columns 1643 is disposed in the fixed sleeves 1642.

[0057] After the concrete specimen is placed on the pallet, it needs to be taken out through the bracket 164. At this time, the bracket 164 extends along the bottom of the pallet, and the movable limiting column 1643 shrinks inward under the pressure of the pallet. Then the bracket 164 continues to go deeper inward until the squeezed movable limiting column 1643 extends out from the other end of the pallet. Then the bracket 164 lifts the pallet and rotates the two-way threaded rod to move the tightening plates 1641 at both ends inward to fix and clamp the pallet.

[0058] In one embodiment, the pallet pusher 4 includes a mounting platform 41 disposed at one end of the pallet conveyor frame 2, a lead screw 42 is rotatably disposed in 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. After the pallet moves to the end along the pallet conveyor frame 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 transported 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 arranged side by side to the other end of the placement area 31, that is, below the specimen clamping assembly 6, wherein the specimen away from the push plate 52 is set as the first one.

[0060] In one embodiment, the specimen clamping assembly 6 includes a second walking track 61 located at the top of the specimen conveying frame 3, a walking frame 62 is slidably arranged in the second walking track 61, a second hydraulic rod 63 is arranged in the walking frame 62, a clamping frame 64 is arranged at the bottom end of the second hydraulic rod 63, and three clamping mechanisms are arranged in the clamping frame 64, among which the clamping mechanism closest to the end, that is, the clamping mechanism located directly above the first specimen is fixed, and the other two clamping mechanisms are movable. An equidistant adjustment assembly is arranged between the clamping mechanisms, and the spacing between the clamping mechanisms can be adjusted first according to the size of the specimen, so that the two clamping mechanisms can be clamped at the same position on the surface of the specimen, which is convenient for the subsequent adjustment of the spacing between the three specimens.

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

[0062] The isometric adjustment component includes a lifting rod 65 located at the top of the clamping mechanism, a telescopic rod 641 is arranged in 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 arranged at the bottom end of the first moving block 66, a second moving block 68 is rotatably arranged 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 arranged at the bottom of the lifting rod 65, and the second moving block 68 is sleeved on the fixed rod 681;

[0063] After the clamping mechanism fixes the specimen, it is adjusted according to the size of the partition in the tray, that is, the telescopic rod 641 pushes the lifting rod 65 downward, the lifting rod 65 moves downward and pushes the movable rod 67, so that the bottom end of the movable rod 67 opens to both sides, completing the spacing adjustment, and finally moving to the upper end of the tray to place the specimen in the tray.

[0064] In one embodiment, the combination mechanism 7 includes a workbench 71, a work chamber is provided in the workbench 71, four turning frames 72 are rotatably provided at the four corners of the work chamber, a synchronization rod 73 is provided between two opposite turning frames 72, a support plate 74 is rotatably provided at one end of the turning frame 72 away from the synchronization rod 73, a combination table 77 is provided on the support plate 74, a roller 75 is provided at one end of the synchronization rod 73, and the two rollers 75 are connected by a transmission belt 76;

[0065] First, the tray is placed on the assembly table 77, and then the test piece is placed in the tray. At this time, the roller 75 is rotated to make all the flip frames 72 rotate synchronously, so that the flip frames 72 remain in a vertical state, thereby supporting the tray. After that, the bracket 164 can be extended from between the flip frames 72 to support the tray.

[0066] In one embodiment, when the flip frame 72 rotates upward, in order to maintain the stability of the tray, the combined platform 77 is also provided with a certain degree of protection; the combined platform 77 includes a fixed frame 771 fixed on the support plate 74, a movable frame 772 is slidably provided on the fixed frame 771, a return spring 773 is provided between the movable frame 772 and the fixed frame 771, incomplete gears 774 are rotatably provided at both ends of the fixed frame 771, a positioning clamping plate 775 is provided on the incomplete gear 774, and tooth grooves 7721 meshing with the incomplete gear 774 are provided 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. After the test piece is placed, the movable frame 772 will move downward to squeeze the reset 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 to limit the tray. In this way, when the flip frame 72 is rotated upward, the stability of the tray can be maintained. When the bracket 164 extends in and lifts the tray, the movable frame 772 will also move upward due to the tray being lifted, thereby driving 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A palletizer for concrete specimens, characterized in that: include: A concrete specimen conveying assembly comprises a specimen conveying frame (3) and a specimen pusher (5) arranged at one end of the specimen conveying frame (3), and is used to convey concrete specimens; a placement area (31) is arranged on one side of the specimen conveying frame (3) close to the specimen pusher (5); A pallet conveying assembly comprises a pallet conveying frame (2) and a pallet pusher (4) located at one end of the pallet conveying frame (2) and used for conveying pallets; The specimen and tray assembly comprises a specimen clamping assembly (6) arranged on the top of the specimen conveying frame (3), and a combination mechanism (7) arranged between the specimen pusher (5) and the tray pusher (4), and is used to place the arranged concrete specimens on the tray; The curing frame (8) comprises support rods (81) distributed in an array, and curing support frames (82) arranged in an array on the support rods (81) and used for receiving trays containing test pieces; The palletizing walking machine (1) is arranged on one side of the curing rack (8) and is used for placing a pallet loaded with test pieces in the curing rack (8).

2. A concrete specimen stacker according to claim 1, characterized in that: The stacking walking machine (1) comprises 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 arranged at the output end of the walking motor (13), a walking rack (14) matched with the walking gear is arranged 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 arranged on the lifting frame (15).

3. A palletizer for concrete specimens according to claim 2, characterized in that: The cargo fork (16) comprises a fixed fork arm (161) arranged on the lifting frame (15), a transverse beam (162) is slidably arranged inside the fixed fork arm (161), a movable fork arm (163) is slidably arranged on the transverse beam (162), and a bracket (164) is arranged on the movable fork arm (163).

4. A palletizer for concrete specimens according to claim 3, characterized in that: The transverse beam (162) comprises a transverse frame (1621) located in the fixed fork arm (161), a transverse rack (1622) is arranged at the bottom of the transverse frame (1621), a fixed plate (151) is arranged at the bottom of the lifting frame (15), a transverse motor (152) is installed on the fixed plate (151), an output end of the transverse motor (152) is connected to an intermediate gear (153), two sides of the intermediate gear (153) are meshed with driving gears (154), the driving gear (154) is rotatably connected to the fixed plate (151), and the driving gear (154) is meshed with the transverse rack (1622); The transverse moving frame (1621) is connected to the fixed fork arm (161) through a first guide wheel (1623), and the transverse moving frame (1621) is connected to the movable fork arm (163) through a second guide wheel (1624). A sprocket (1625) is rotatably provided at one end of the transverse moving 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) through a first connecting block (1627), and the other end of the chain (1626) is connected to the movable fork arm (163) through a second connecting block (1628).

5. A palletizer for concrete specimens according to claim 3, characterized in that: A bidirectional threaded rod is rotatably arranged in the bracket (164), tightening plates (1641) are sleeved on both ends of the bidirectional threaded rod, fixed sleeves (1642) are arranged at both ends of the tightening plates (1641), a movable limiting column (1643) is movably arranged on the fixed sleeve (1642), and a limiting spring connected to the movable limiting column (1643) is arranged in the fixed sleeve (1642).

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

7. A concrete specimen stacker according to claim 1, characterized in that: The specimen clamping assembly (6) comprises a second walking track (61) located at the top of the specimen conveying frame (3), a walking frame (62) is slidably arranged in the second walking track (61), a second hydraulic rod (63) is arranged in the walking 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 assembly is arranged on the clamping mechanism.

8. A concrete specimen stacker according to claim 7, characterized in that: The clamping mechanism comprises a clamping beam (69) located in the clamping frame (64), a fixed clamping plate (610) is arranged on the clamping beam (69), and a movable clamping plate (611) slidably connected to the clamping beam (69) is arranged on one side of the fixed clamping plate (610); The isometric adjustment component comprises a lifting rod (65) located at the top of the clamping mechanism, a telescopic rod (641) is arranged in 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 arranged at the bottom end of the first moving block (66), a second moving block (68) is rotatably arranged 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 arranged at the bottom of the lifting rod (65), and the second moving block (68) is sleeved on the fixed rod (681).

9. A concrete specimen stacker according to claim 1, characterized in that: The combined mechanism (7) comprises a workbench (71), a work chamber is provided in the workbench (71), four turning frames (72) are rotatably provided at the four corners of the work chamber, a synchronization rod (73) is provided between two oppositely arranged turning frames (72), a support plate (74) is rotatably provided at one end of the turning frame (72) away from the synchronization rod (73), a combined platform (77) is provided on the support plate (74), a roller (75) is provided at one end of the synchronization rod (73), and the two rollers (75) are connected to each other by a transmission belt (76).

10. A concrete specimen stacker according to claim 9, characterized in that: The combined platform (77) comprises a fixed frame (771) fixed on a support plate (74); a movable frame (772) is slidably arranged on the fixed frame (771); a return spring (773) is arranged between the movable frame (772) and the fixed frame (771); incomplete gears (774) are rotatably arranged at both ends of the fixed frame (771); a positioning clamping plate (775) is arranged on the incomplete gear (774); and tooth grooves (7721) meshing with the incomplete gear (774) are arranged at both ends of the movable frame (772).

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