Screening device for archaeological use

Abstract

The utility model discloses a screening device for archaeological use. The screening device comprises an outer frame, an inner frame and a screen, two optical shafts are fixedly connected in the outer frame, a penetrating type sliding hole is formed in the side face of the inner frame, and the two optical shafts are connected in the sliding hole in a sliding mode. An annular mounting frame is rotationally connected in the inner frame, and the screen is fixed in the mounting frame; the turnover mechanism is used for driving the mounting frame to rotate; the driving part is used for driving the inner frame to axially slide back and forth along the optical axis; the turnover mechanism comprises an outer gear ring fixedly connected to the bottom of the mounting frame and a rack fixedly connected to the bottom of the outer frame, and the rack is in meshed connection with the outer gear ring. According to the cultural relic screening device, the screen can rotate while moving transversely in a reciprocating mode, cultural relics and soil are distributed more dispersedly in the screening process, and then the screening efficiency of the cultural relics is improved.

Description

Technical Field

[0001] This utility model relates to the field of archaeological technology, specifically an archaeological screening device. Background Technology

[0002] During the archaeological process, valuable fragments of historical artifacts need to be constantly unearthed from the ground. When these fragments are first discovered, they are usually mixed with the soil, so an archaeological sorting sieve is needed to separate them.

[0003] A Chinese patent with publication number CN218902606U discloses an archaeological sorting sieve. By starting a motor, the motor's output rotates, driving a cross plate to rotate. As the cross plate rotates, it pushes a locking pin to move laterally, causing the inner frame to move laterally, which in turn moves the sieve screen laterally. When the cross plate separates from the locking pin, the inner frame resets under the action of a first spring. This repetitive motion causes the sieve screen to vibrate continuously, allowing soil to fall off while artifact fragments remain. This achieves automatic separation of soil and artifact fragments through a vibration mechanism, avoiding manual sifting by archaeologists, thus reducing their workload and improving work efficiency.

[0004] The above-mentioned patent still has the following defects: during the screening process, the screen moves back and forth horizontally, which causes the distribution of cultural relic fragments and soil on the screen to be approximately a line shape, which is not uniform and reduces the screening efficiency to a certain extent.

[0005] Furthermore, when the cross plate separates from the locking pin, the inner frame resets under the action of the first spring. At this time, the direction of movement of the locking pin is opposite to the tangential direction of movement of the cross plate, and the locking pin will directly hit the cross plate. The interaction force between the locking pin and the cross plate can easily cause the connection between the locking pin and the inner frame to break, and will also affect the life of the motor, thus affecting the screening of cultural relic fragments. Utility Model Content

[0006] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide an archaeological screening device that enables the screen to rotate while moving laterally back and forth, so that the distribution of cultural relics and soil is more dispersed during the screening process, thereby improving the screening efficiency of cultural relics.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An archaeological sieve includes an outer frame, an inner frame, and a sieve. Two optical shafts are fixedly connected inside the outer frame. The inner frame has through-holes on its sides, and the two optical shafts are slidably connected in the through-holes. An annular mounting frame is rotatably connected inside the inner frame, and the sieve is fixed inside the mounting frame. The sieve also includes a rotating mechanism for driving the mounting frame to rotate and a driving component for driving the inner frame to slide back and forth along the optical shaft axis.

[0009] The turnover mechanism includes an outer gear ring fixed to the bottom of the mounting frame and a rack fixed to the bottom of the outer frame, wherein the rack is engaged with the outer gear ring.

[0010] Preferably, the driving component includes a mounting plate fixed to the side of the inner frame, a vertical sliding groove is provided on the mounting plate, a sliding block is slidably connected in the sliding groove, a motor is mounted on the outer frame, a connecting rod is fixedly connected to the end of the motor shaft, and the end of the connecting rod away from the motor is rotatably connected to the sliding block.

[0011] Preferably, the mounting plate is rhomboid in shape, and the sliding groove is located on the diagonal of the rhomboid.

[0012] Preferably, the drive components are in two sets, symmetrically installed on both sides of the inner frame.

[0013] Preferably, the mounting frame includes an annular top plate, an annular connecting plate fixed to the bottom of the annular top plate by bolts, and an annular bottom plate welded to the bottom of the annular connecting plate. The top and bottom of the inner frame, the bottom of the annular top plate, and the top of the annular bottom plate are all provided with annular grooves, and rolling elements are provided in the annular grooves.

[0014] Preferably, a plurality of telescopic rods are provided between the inner frame and the outer frame, with one end of each telescopic rod fixed to the inner frame and the other end fixed to the outer frame.

[0015] Preferably, a spring is sleeved on the outside of the telescopic rod, and the two ends of the spring are respectively fixed to the inner frame and the outer frame.

[0016] Preferably, a protective mesh cover is provided on the top of the inner frame. The protective mesh cover is located above the screen. One side of the anti-slip mesh cover is hinged to the inner frame, and the other side is detachably connected to the inner frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Overall, in this application, when the driving component drives the inner frame to reciprocate along the optical axis, the meshing of the external gear at the bottom of the mounting frame and the rack at the bottom of the outer frame enables the screen to rotate during its reciprocating translational motion. This allows the cultural relics and soil inside the screen to be more dispersed and not piled up, thereby improving the screening efficiency of cultural relics.

[0019] 2. Since the movement of the inner frame is driven by the rotation of the motor, and the motor is rotatably connected to the connecting rod, the connecting rod is rotatably connected to the sliding block, and the sliding block is slidably connected to the sliding groove of the mounting plate, while the mounting plate is fixed to the inner frame, the inner frame changes with the horizontal position of the sliding block at all times. The overall structure of the driving component is more compact, and there will be no collision problem between the components of the driving component, which reduces damage to the motor and improves the service life of the motor. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the mounting frame, inner frame, and driving component of this utility model;

[0023] Figure 4 This is an exploded structural diagram of the mounting frame of this utility model.

[0024] In the diagram: 1. Outer frame; 2. Inner frame; 21. Sliding hole; 3. Screen; 4. Optical axis; 5. Mounting frame; 51. Annular top plate; 52. Annular connecting plate; 53. Annular bottom plate; 6. Turnover mechanism; 61. Outer gear ring; 62. Rack; 7. Drive component; 71. Mounting plate; 72. Sliding groove; 73. Sliding block; 74. Motor; 75. Connecting rod; 81. Annular groove; 82. Rolling element; 9. Telescopic rod; 10. Spring; 11. Protective net cover. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please refer to Figure 1 - Figure 4 This embodiment provides an archaeological screening device, including an outer frame 1, an inner frame 2, and a screen 3; two optical shafts 4 are fixedly connected inside the outer frame 1, and a through-hole 21 is provided on the side of the inner frame 2, with the two optical shafts 4 slidably connected in the through-hole 21; an annular mounting frame 5 is rotatably connected inside the inner frame 2, and the screen 3 is fixed inside the mounting frame 5; this embodiment also includes a rotating mechanism 6 for driving the mounting frame 5 to rotate and a driving component 7 for driving the inner frame 2 to slide back and forth along the optical shaft 4 axial direction.

[0027] Specifically, refer to Figure 2 The turnover mechanism 6 includes an outer gear ring 61 fixed to the bottom of the mounting frame 5 and a rack 62 fixed to the bottom of the outer frame 1. The rack 62 is engaged with the outer gear ring 61.

[0028] The following describes a specific application scenario. When screening cultural relics, the relics are placed in the screen 3. The driving component 7 drives the inner frame 2 to slide back and forth along the optical axis 4, which in turn drives the screen 3 to move back and forth. This allows the soil on the relics to be sieved out through the screen 3, thus achieving the screening process. As the driving component 7 moves the inner frame 2 along the optical axis 4, the meshing of the outer toothed ring 61 at the bottom of the mounting frame 5 and the toothed rack 62 at the bottom of the outer frame 1 causes the mounting frame 5 to rotate, thus achieving the rotational movement of the screen 3. In this way, the relics and soil are subjected to forces not only along the optical axis 4 but also circumferential forces through the screen 3. This ensures that the relics and soil within the screen 3 are more dispersed, preventing them from piling up, thereby increasing the screening efficiency.

[0029] Overall, in this application, when the driving component 7 drives the inner frame 2 to move back and forth along the optical axis 4, the meshing of the external gear at the bottom of the mounting frame 5 with the rack 62 at the bottom of the outer frame 1 enables the screen 3 to rotate during its reciprocating translational motion. This makes the cultural relics and soil in the screen 3 more dispersed and prevents them from piling up, thereby improving the screening efficiency of cultural relics.

[0030] Furthermore, refer to Figure 3 The driving component 7 includes a mounting plate 71 fixed to the side of the inner frame 2. A vertical sliding groove 72 is provided on the mounting plate 71. A sliding block 73 is slidably connected in the sliding groove 72. A motor 74 is mounted on the outer frame 1. A connecting rod 75 is fixed to the shaft end of the motor 74. The end of the connecting rod 75 away from the motor 74 is rotatably connected to the sliding block 73.

[0031] In specific application scenarios, starting the motor 74 drives the connecting rod 75 to rotate, which in turn drives the sliding block 73 to rotate around the axis of the motor 74. Since the end of the connecting rod 75 away from the motor 74 is rotatably connected to the sliding block 73, and the sliding block 73 is slidably connected to the vertical sliding groove 72 of the mounting plate 71, when the sliding block 73 rotates, it exerts a force on the inner frame 2 along the optical axis 4. Thus, by starting the motor 74 and driving the connecting rod 75 to rotate around the end of the motor 74, and further through the rotational cooperation between the sliding block 73 and the connecting rod 75, and the sliding cooperation between the sliding groove 72 and the sliding block 73, the inner frame 2 can be driven to reciprocate along the optical axis 4, thereby achieving the selection and screening of cultural relics. Since the movement of the inner frame 2 is driven by the rotation of the motor 74, and the motor 74 is rotatably connected to the connecting rod 75, the connecting rod 75 is rotatably connected to the sliding block 73, and the sliding block 73 is slidably connected to the sliding groove 72 of the mounting plate 71, and the mounting plate 71 is fixed to the inner frame 2, the inner frame 2 changes with the change of the horizontal position of the sliding block 73 at all times. The overall structure of the driving component 7 is more compact, and there will be no collision problem between the parts of the driving component 7, which reduces the damage to the motor 74 and improves the service life of the motor 74.

[0032] Reference Figure 1 and Figure 3 As a specific embodiment of this application, the mounting plate 71 is generally rhomboid in shape, and the sliding groove 72 is located on the diagonal of the rhomboid.

[0033] Depending on the specific application scenario, using a diamond-shaped mounting plate 71 can increase the area of ​​the fixed connection between the mounting plate 71 and the inner frame 2, increase the overall installation stability of the mounting plate 71, and reduce the amount of material used for the mounting plate 71.

[0034] Reference Figure 1 and Figure 3 As one specific implementation of this application, the driving component 7 has two sets, which are symmetrically installed on both sides of the inner frame 2.

[0035] Based on the specific application scenario, two sets of drive components 7 symmetrically installed on both sides of the inner frame 2 are used to drive the movement of the inner frame 2. This makes the force on the inner frame 2 more uniform and balanced, thereby ensuring the stability and smoothness of the movement of the inner frame 2.

[0036] Reference Figure 2 and Figure 4As a specific embodiment of this application, the mounting frame 5 includes an annular top plate 51, an annular connecting plate 52 fixed to the bottom of the annular top plate 51 by bolts, and an annular bottom plate 53 welded to the bottom of the annular connecting plate 52. Annular grooves 81 are provided at the top and bottom of the inner frame 2, at the bottom of the annular top plate 51, and at the top of the annular bottom plate 53. Rolling elements 82 are provided in the annular grooves 81.

[0037] In accordance with specific usage scenarios, during the installation between the mounting frame 5 and the inner frame 2, the rolling elements 82 are first installed in the annular base plate 53 and the annular groove 81 at the bottom of the inner frame 2. Then, the annular connecting plate 52 is passed through the inner frame 2 until the top of the rolling elements 82 on the annular base plate 53 abuts against the annular groove 81 at the bottom of the inner frame 2. Then, the annular top plate 51 is fixed to the bottom of the annular connecting plate 52 with bolts, so that the annular groove 81 at the bottom of the annular top plate 51 abuts against the rolling elements 82 at the top of the inner frame 2. This arrangement not only facilitates the assembly between the inner frame 2 and the mounting bracket, but also ensures the connection stability between the inner frame 2 and the mounting bracket.

[0038] Reference Figure 1 and Figure 2 As a specific implementation of this application, a plurality of telescopic rods 9 are provided between the inner frame 2 and the outer frame 1, with one end of the telescopic rod 9 fixed to the inner frame 2 and the other end fixed to the outer frame 1.

[0039] Furthermore, a spring 10 is fitted on the outside of the telescopic rod 9, with the two ends of the spring 10 fixed to the inner frame 2 and the outer frame 1, respectively.

[0040] In combination with specific usage scenarios, the setting of multiple telescopic rods 9 and springs 10 not only increases the stability of the inner frame 2 in axial translation along the optical axis 4, but also increases the connection stability between the inner frame 2 and the outer frame 1 without affecting the movement of the inner frame 2; in addition, the springs 10 can further assist the movement of the inner frame 2, increase the responsiveness of the movement of the inner frame 2, and make the selection and screening of cultural relics smoother and more stable.

[0041] Reference Figure 1 and Figure 3 As a specific embodiment of this application, a protective net cover 11 is provided on the top of the inner frame 2. The protective net cover 11 is located above the screen 3, and one side of the protective net cover is hinged to the inner frame 2, while the other side is detachably connected to the inner frame 2.

[0042] Depending on the specific application scenario, when selecting and screening cultural relics, the protective net cover 11 can prevent cultural relics or fragments of mud from splashing out under the action of inertia and causing injury to the staff.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this 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 this invention.

Claims

1. An archaeological sieve, comprising an outer frame (1), an inner frame (2), and a sieve (3); characterized in that, The outer frame (1) has two optical shafts (4) fixedly connected inside. The inner frame (2) has through-holes (21) on its side. The two optical shafts (4) are slidably connected in the sliding holes (21). The inner frame (2) has an annular mounting frame (5) rotatably connected inside. The screen (3) is fixed in the mounting frame (5). The inner frame (2) also includes a rotating mechanism (6) for driving the mounting frame (5) to rotate and a driving component (7) for driving the inner frame (2) to slide back and forth along the optical shafts (4) axially. The turnover mechanism (6) includes an outer gear ring (61) fixed to the bottom of the mounting frame (5) and a rack (62) fixed to the bottom of the outer frame (1), wherein the rack (62) is engaged with the outer gear ring (61).

2. The archaeological sieve according to claim 1, characterized in that, The driving component (7) includes a mounting plate (71) fixed to the side of the inner frame (2). A vertical sliding groove (72) is provided on the mounting plate (71). A sliding block (73) is slidably connected in the sliding groove (72). A motor (74) is installed on the outer frame (1). A connecting rod (75) is fixed to the shaft end of the motor (74). The end of the connecting rod (75) away from the motor (74) is rotatably connected to the sliding block (73).

3. The archaeological sieve according to claim 2, characterized in that, The mounting plate (71) is rhomboid in shape, and the sliding groove (72) is located on the diagonal of the rhomboid.

4. The archaeological sieve according to claim 1, characterized in that, The drive unit (7) has two sets, which are symmetrically installed on both sides of the inner frame (2).

5. The archaeological sieve according to claim 1, characterized in that, The mounting frame (5) includes an annular top plate (51), an annular connecting plate (52) fixed to the bottom of the annular top plate (51) by bolts, and an annular bottom plate (53) welded to the bottom of the annular connecting plate (52). The top and bottom of the inner frame (2), the bottom of the annular top plate (51) and the top of the annular bottom plate (53) are all provided with annular grooves (81), and rolling elements (82) are provided in the annular grooves (81).

6. The archaeological sieve according to claim 1, characterized in that, Multiple telescopic rods (9) are provided between the inner frame (2) and the outer frame (1). One end of the telescopic rod (9) is fixed to the inner frame (2), and the other end is fixed to the outer frame (1).

7. The archaeological sieve according to claim 6, characterized in that, A spring (10) is sleeved on the outside of the telescopic rod (9), and the two ends of the spring (10) are fixed to the inner frame (2) and the outer frame (1) respectively.

8. The archaeological sieve according to claim 1, characterized in that, The inner frame (2) is provided with a protective net cover (11) on top. The protective net cover (11) is located above the screen (3). One side of the protective net cover (11) is hinged to the inner frame (2), and the other side is detachably connected to the inner frame (2).

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