Screening device convenient to disassemble and assemble and used for soil detection

Abstract

The utility model belongs to the technical field of soil detection, and particularly relates to a soil detection screening device convenient to disassemble and assemble, which comprises a workbench, a mounting seat, a driving mechanism, a screening mechanism and a limiting mechanism, the driving mechanism is arranged on the workbench, the driving end of the driving mechanism is connected with the mounting base and used for driving the mounting base to horizontally shake, and the mounting base is used for mounting the screening mechanism; the limiting mechanism comprises a limiting rod, a limiting ring, a vertical adjusting assembly and a pressing plate. The limiting rod is vertically arranged on the mounting base, the limiting ring is arranged on the outer side wall of the screening mechanism, and the limiting ring is used for vertically and slidably sleeving the limiting rod; the vertical adjusting assembly is arranged on the mounting base and located on one side of the limiting rod, the screening mechanism is placed between the limiting rod and the vertical adjusting assembly, and the driving end of the vertical adjusting assembly is connected with the pressing plate and can drive the pressing plate to vertically move and abut against the top of the screening mechanism; according to the scheme, the sieve tray can be disassembled and assembled through simple manual operation.

Description

Technical Field

[0001] This utility model belongs to the field of soil testing technology, specifically relating to a sieving device for soil testing that is easy to assemble and disassemble. Background Technology

[0002] Soil testing is a crucial component in various fields, including agricultural production, environmental monitoring, and geological exploration. To obtain accurate information on soil particle distribution, sieving devices are widely used in the pretreatment of soil samples. Traditional soil sieving devices often suffer from complex structures and inconvenient assembly and disassembly, which not only affects sieving efficiency but also increases operational difficulty and maintenance costs. Especially when frequent disassembly and reassembly of the screen or adjustment of the number of sieve layers is required to meet different sieving needs, traditional devices often use bolt-fixed or snap-locked structures. Disassembling the screen requires manually removing multiple components using additional tools, making the operation cumbersome and significantly reducing work efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a soil testing screening device that is easy to assemble and disassemble, thus solving the problem that existing traditional devices require manual disassembly of multiple components using additional tools, which is cumbersome and greatly reduces work efficiency.

[0004] The technical solution adopted by this utility model is as follows: a sieving device for soil testing that is easy to assemble and disassemble, including a workbench, a mounting base, a drive mechanism, a sieving mechanism and a limiting mechanism;

[0005] The drive mechanism is set on the workbench, and the drive end of the drive mechanism is connected to the mounting base for driving the mounting base to swing horizontally. The mounting base is used to install the screening mechanism.

[0006] The limiting mechanism includes a limiting rod, a limiting ring, a vertical adjustment assembly, and a pressure plate;

[0007] The limiting rod is vertically mounted on the mounting base, and the limiting ring is mounted on the outer wall of the screening mechanism. The limiting ring is used to slide vertically on the limiting rod.

[0008] The vertical adjustment component is mounted on the mounting base and located on one side of the limiting rod. The screening mechanism is placed between the limiting rod and the vertical adjustment component. The driving end of the vertical adjustment component is connected to the pressure plate, which can drive the pressure plate to move vertically and abut against the top of the screening mechanism.

[0009] Furthermore, the screening mechanism includes a cover plate, a base plate, and several screen discs;

[0010] The chassis is located between the limiting rod and the vertical adjustment component. The upper end of the chassis is open, and the upper surface of the chassis is provided with a first slot.

[0011] The upper ends of several of the screen discs are open, and a retaining ring is provided at the bottom of the screen disc corresponding to the first retaining groove. The retaining ring can engage with the first retaining groove.

[0012] The upper surface of the screen disc is provided with a second slot corresponding to the retaining ring, and the retaining ring can engage with the second slot.

[0013] The bottom of the cover plate is provided with a chuck corresponding to the second slot, and the chuck can engage with the second slot.

[0014] Limiting rings are fixedly connected to the outer walls of several of the screen discs.

[0015] Furthermore, it also includes a bottom limiting component, which includes a slider, an insertion cavity, an arc-shaped groove, and an insertion port;

[0016] The insertion cavity is opened on the upper surface of the mounting base and is located between the limiting rod and the vertical adjustment component, for the bottom of the chassis to be inserted;

[0017] The arc-shaped groove is formed on the inner wall of the insertion cavity, the insertion port is formed on the upper surface of the mounting base, the inner end of the insertion port is connected to the insertion cavity, and the lower end of the insertion port is connected to the arc-shaped groove.

[0018] The slider is fixedly connected to the outer wall of the chassis, and the slider can pass through the inlet and extend into the arc-shaped groove, and slide in the arc-shaped groove.

[0019] Furthermore, the vertical adjustment assembly includes a slide cylinder, a slide rod, and a screw;

[0020] The slide cylinder is vertically arranged on the right side of the screening mechanism. The slide rod is slidably sleeved inside the slide cylinder. The upper end of the slide rod is fixedly connected to one end of the pressure plate. A threaded through hole is opened on the outer side wall of the upper part of the slide cylinder. The screw is threadedly connected to the threaded through hole. The inner end of the screw can abut against the outer side wall of the slide rod. A handle is fixedly connected to the outer end of the screw.

[0021] Furthermore, the drive mechanism includes a mounting frame, a motor, a turntable, a rotating rod, an arc gear, a slide groove, a support frame, and a rack;

[0022] There are two support frames, located on the left and right sides of the mounting base, respectively;

[0023] The left and right side walls of the mounting base are slidably fitted into the support frames on both sides along the front-back direction of the workbench. The support frame on the left side of the mounting base has a through groove along the front-back direction. The rack is fixedly connected to the left side wall of the mounting base and can slide along the through groove.

[0024] The mounting frame is set on the workbench and located on the left side of the support frame. The left end of the arc gear is rotatably connected to the mounting frame. The right end of the arc gear has a toothed shape. The rack meshes with the arc gear. The arc gear has a sliding groove perpendicular to the rack.

[0025] The motor is mounted on the top of the mounting frame, and the drive end of the motor is connected to the center of the top of the turntable. The bottom outer edge of the turntable is provided with a vertically downward rotating rod, and the lower end of the rotating rod is slidably engaged in a groove. The motor can drive the mounting base to slide back and forth along the support frame in the front-to-back direction.

[0026] The beneficial effects of this utility model are:

[0027] 1. The horizontal limit of the screening mechanism is quickly achieved by the sliding cooperation between the limiting ring and the limiting rod on the screening mechanism. The vertical adjustment component and the pressure plate provide vertical clamping force to prevent the screening mechanism from loosening during the screening process, thereby achieving quick installation of the screening mechanism. The screen plate can be disassembled and installed by simple manual operation without additional tools. The drive mechanism drives the mounting base to swing horizontally back and forth, so that the screening mechanism vibrates and screens the soil.

[0028] 2. The screening mechanism adopts a modular design. Each layer of screen discs can be quickly assembled by nesting through the second slot and the retaining ring. The screen discs adopt a snap-fit ​​structure, which does not require bolt fixing and can be disassembled and assembled by hand. This facilitates the disassembly and replacement of screen discs with different aperture sizes, thereby improving work efficiency.

[0029] 3. The bottom limiting component further secures the chassis through the combined use of sliders and arc grooves, preventing the overall structure from shaking or shifting during the screening process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a partial structural schematic diagram of the present invention (first view, and the worktable and drive mechanism are not shown in the figure);

[0032] Figure 3 This is a partial structural schematic diagram of the present invention (second view, and the worktable and drive mechanism are not shown in the figure);

[0033] Figure 4 This is an exploded view (first perspective) of the screening mechanism in this utility model;

[0034] Figure 5 This is an exploded view (second perspective) of the screening mechanism in this utility model;

[0035] Figure 6 This is a schematic diagram of the mounting base in this utility model;

[0036] Figure 7 This is a schematic diagram of the vertical adjustment component in this utility model;

[0037] The attached diagram is labeled as follows:

[0038] Workbench 1, Mounting base 2, Drive mechanism 3, Mounting frame 31, Motor 32, Turntable 33, Rotating rod 34, Arc gear 35, Slide groove 36, Support frame 37, Rack 38, Through groove 39, Screening mechanism 4, Cover plate 41, Base plate 42, Screening disc 43, First slot 44, Snap ring 45, Second slot 46, Chuck 47, Limiting mechanism 5, Limiting rod 51, Limiting ring 52, Slide cylinder 53, Slide rod 54, Screw 55, Pressure plate 56, Bottom limiting assembly 6, Slider 61, Insertion cavity 62, Arc groove 63, Insertion entrance 64. Detailed Implementation

[0039] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0040] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] like Figures 1 to 7 As shown, a soil testing screening device that is easy to assemble and disassemble includes a workbench 1, a mounting base 2, a drive mechanism 3, a screening mechanism 4, and a limiting mechanism 5.

[0043] like Figure 1As shown, the drive mechanism 3 is set on the workbench 1, and the drive end of the drive mechanism 3 is connected to the mounting base 2 for driving the mounting base 2 to swing horizontally. The mounting base 2 is used to install the screening mechanism 4.

[0044] The limiting mechanism 5 includes a limiting rod 51, a limiting ring 52, a vertical adjustment component, and a pressure plate 56;

[0045] The limiting rod 51 is vertically mounted on the mounting base 2, and the limiting ring 52 is mounted on the outer side wall of the screening mechanism 4. The limiting ring 52 is used to slide vertically on the limiting rod 51.

[0046] The vertical adjustment component is mounted on the mounting base 2 and located on one side of the limiting rod 51. The screening mechanism 4 is placed between the limiting rod 51 and the vertical adjustment component. The driving end of the vertical adjustment component is connected to the pressure plate 56, which can drive the pressure plate 56 to move vertically and abut against the top of the screening mechanism 4.

[0047] like Figures 2-5 As shown, as a preferred embodiment, the screening mechanism 4 includes a cover plate 41, a base plate 42, and several screen plates 43;

[0048] The chassis 42 is located between the limiting rod 51 and the vertical adjustment component. The upper end of the chassis 42 is open, and the upper surface of the chassis 42 is provided with a first slot 44.

[0049] The upper ends of several of the screen discs 43 are open, and the bottom of the screen disc 43 is provided with a retaining ring 45 corresponding to the first retaining groove 44. The retaining ring 45 can be engaged with the first retaining groove 44.

[0050] The upper surface of the screen disk 43 is provided with a second slot 46 corresponding to the retaining ring 45, and the retaining ring 45 can be engaged with the second slot 46.

[0051] The bottom of the cover plate 41 is provided with a chuck 47 corresponding to the second slot 46, and the chuck 47 can engage with the second slot 46.

[0052] Limiting rings 52 are fixedly connected to the outer walls of several of the screen discs 43.

[0053] In this embodiment, several screen trays 43 are equipped with screens at their bottoms, and the mesh size of the screens decreases sequentially from top to bottom. The base 42, screen trays 43, and cover plate 41 are assembled using a nested snap-fit ​​method. The base 42 is provided with a first slot 44, and the bottom of the screen tray 43 is provided with a retaining ring 45 that can match the lower slot. The top of the screen tray 43 is provided with a second slot 46 for the upper screen tray 43 retaining ring 45 to be inserted. The limiting ring 52 is fitted onto the limiting rod 51 to ensure that the screen tray 43 does not deviate in the horizontal direction and to limit the screen tray 43 in the horizontal direction. Tool-free disassembly and assembly are required, which facilitates quick replacement of the screen tray 43 or adjustment of the number of layers.

[0054] In this embodiment, three sieve discs 43 are provided, and each of the three sieve discs 43 has a sieve at its bottom. The mesh size of the sieves in the three sieve discs 43 decreases from top to bottom, so as to classify and sieve the soil sample.

[0055] like Figure 2 and Figure 6 As shown, as a preferred embodiment, it also includes a bottom limiting component 6, which includes a slider 61, an insertion cavity 62, an arc groove 63, and an insertion entrance 64.

[0056] The insertion cavity 62 is formed on the upper surface of the mounting base 2 and is located between the limiting rod 51 and the vertical adjustment assembly, for the bottom of the chassis 42 to be inserted.

[0057] The arc-shaped groove 63 is formed on the inner side wall of the insertion cavity 62, the insertion port 64 is formed on the upper surface of the mounting base 2, the inner end of the insertion port 64 is connected to the insertion cavity 62, and the lower end of the insertion port 64 is connected to the arc-shaped groove 63.

[0058] The slider 61 is fixedly connected to the outer wall of the chassis 42. The slider 61 can pass through the inlet 64 and extend into the arc-shaped groove 63, and slide within the arc-shaped groove 63.

[0059] In this embodiment, the bottom of the chassis 42 is inserted into the insertion cavity 62, and the slider 61 of the chassis 42 extends into the arc-shaped groove 63 through the insertion port 64. After the chassis 42 is placed in, it is rotated at a certain angle until the slider 61 abuts against the inner side wall of the arc-shaped groove 63, so that the slider 61 slides into the arc-shaped groove 63 and locks, thereby limiting the vertical position of the chassis 42. In conjunction with the pressure plate 56 abutting against the cover plate 41, the screening mechanism 4 is more stable during soil screening. The limiting or disassembly can be completed by rotating the chassis 42, realizing quick fixing / unlocking.

[0060] like Figure 7 As shown, in a preferred embodiment, the vertical adjustment assembly includes a slide cylinder 53, a slide rod 54, and a screw rod 55;

[0061] The slide cylinder 53 is vertically arranged on the right side of the screening mechanism 4. The slide rod 54 is slidably sleeved inside the slide cylinder 53. The upper end of the slide rod 54 is fixedly connected to one end of the pressure plate 56. A threaded through hole is opened on the outer side wall of the upper part of the slide cylinder 53. The screw 55 is threadedly connected to the threaded through hole. The inner end of the screw 55 can abut against the outer side wall of the slide rod 54. A handle is fixedly connected to the outer end of the screw 55.

[0062] In this embodiment, by rotating the screw 55 outward, the inner end of the screw 55 disengages from the slide rod 54, thereby enabling the slide rod 54 to slide vertically or rotate, facilitating the stacking of the screen trays 43. After the screen trays 43 are placed, the cover plate 41 is placed on top, and the slide rod 54 is adjusted until the bottom of the pressure plate 56 presses against the top of the cover plate 41. Then, the screw 55 is rotated inward so that the inner end of the screw 55 abuts against the outer wall of the slide rod 54, thus limiting the position of the slide rod 54 and the pressure plate 56. The height of the slide rod 54 is adjusted by the screw 55, so that the pressure plate 56 presses against the cover plate 41, providing vertical fixing force to accommodate different combinations of screen trays 43 with different numbers of layers. The operation is simple, requiring only the rotation of the screw 55 to complete the fixing or release.

[0063] like Figure 1 and Figure 3 As shown, as a preferred embodiment, the drive mechanism 3 includes a mounting frame 31, a motor 32, a turntable 33, a rotating rod 34, an arc gear 35, a slide groove 36, a support frame 37, and a rack 38;

[0064] Two support frames 37 are provided, and they are located on the left and right sides of the mounting base 2 respectively;

[0065] The left and right side walls of the mounting base 2 are slidably fitted into the support frames 37 on both sides along the front and back direction of the workbench 1. The support frame 37 on the left side of the mounting base 2 has a through groove 39 along the front and back direction. The rack 38 is fixedly connected to the left side wall of the mounting base 2 and can slide along the through groove 39.

[0066] The mounting bracket 31 is set on the workbench 1 and located on the left side of the support frame 37. The left end of the arc gear 35 is rotatably connected to the mounting bracket 31. The right end of the arc gear 35 has a toothed shape. The rack 38 meshes with the arc gear 35. The arc gear 35 has a sliding groove 36 that is perpendicular to the rack 38.

[0067] The motor 32 is mounted on the top of the mounting bracket 31. The drive end of the motor 32 is connected to the center of the top of the turntable 33. The bottom outer edge of the turntable 33 is provided with a vertically downward rotating rod 34. The lower end of the rotating rod 34 is slidably engaged in the sliding groove 36. The motor 32 can drive the mounting base 2 to slide back and forth in the front and back direction within the support frame 37.

[0068] In this embodiment, after the limiting mechanism 5 limits the screening mechanism 4, the motor 32 is started to drive the turntable 33 to rotate. When the turntable 33 rotates, it drives the rotating rod 34 on the lower surface of the turntable 33 to rotate around the center of the turntable 33. Since the lever is slidably engaged in the groove 36 of the arc gear 35 and the left end of the arc gear 35 is rotatably connected to the mounting frame 31, the rotating rod 34 drives the arc gear 35 to swing back and forth in the front and back direction, and drives the rack 38 to move back and forth in the front and back direction of the support frame 37, thereby driving the mounting base 2 to shake back and forth rapidly.

[0069] As a preferred embodiment, a rubber pad is provided at the bottom of the pressure plate 56. This allows the pressure plate 56 to press the screening mechanism 4 more firmly.

[0070] The working principle of this utility model is as follows:

[0071] In use, align the bottom of the base 42 with the insertion cavity 62 on the mounting base 2, so that the slider 61 on the outside of the base 42 enters the arc-shaped groove 63 through the insertion port 64. Rotate the base 42 at a certain angle so that the slider 61 is locked into the end of the arc-shaped groove 63. Stack the screen trays in order of decreasing aperture. The base 42 is provided with a first slot 44, and the bottom of the screen tray 43 is provided with a retaining ring 45, which can match the lower slot. The top of the screen tray 43 is provided with a second slot 46, which allows the upper layer to be inserted. Insert the retaining ring 45 into the sieve disc 43, and place the limiting ring 52 onto the limiting rod 51 to ensure that the sieve disc 43 does not shift horizontally, thus limiting the horizontal movement of the sieve disc 43. Pour the soil sample into the uppermost sieve disc 43 and cover it with the cover plate 41 to complete the seal. Adjust the sliding rod 54 until the bottom of the pressure plate 56 presses against the top of the cover plate 41. Then, rotate the screw 55 inward so that the inner end of the screw 55 abuts against the outer wall of the sliding rod 54, completing the sealing of the sliding rod 54 and the pressure plate 56. The limit of plate 56; the height of slide rod 54 is adjusted by screw 55 so that pressure plate 56 presses against cover plate 41, motor 32 is started to drive turntable 33 to rotate. When turntable 33 rotates, it drives the rotating rod 34 on the lower surface of turntable 33 to rotate around the center of turntable 33. Since the lever is slidably engaged in the groove 36 of arc gear 35 and the left end of arc gear 35 is rotatably connected to mounting bracket 31, the rotating rod 34 drives arc gear 35 to oscillate back and forth in the front and back direction, and brings The moving rack 38 moves back and forth along the support frame 37, which in turn drives the mounting base 2 to shake back and forth rapidly. After screening, the screw 55 is rotated outward so that the inner end of the screw 55 disengages from the slide bar 54, thereby enabling the slide bar 54 to slide vertically or rotate, making it easy to quickly remove the stacked screen tray 43. Then, the base plate 42 is rotated in the opposite direction to disengage the slider 61 on the base plate 42 from the arc groove 63, so that the base plate 42 is removed from the insertion cavity 62 of the mounting base 2.

[0072] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A sieving device for soil testing that is easy to assemble and disassemble, characterized in that: It includes a worktable (1), a mounting base (2), a drive mechanism (3), a screening mechanism (4), and a limiting mechanism (5); The drive mechanism (3) is set on the workbench (1), and the drive end of the drive mechanism (3) is connected to the mounting base (2) to drive the mounting base (2) to swing horizontally. The mounting base (2) is used to install the screening mechanism (4). The limiting mechanism (5) includes a limiting rod (51), a limiting ring (52), a vertical adjustment component, and a pressure plate (56); The limiting rod (51) is vertically mounted on the mounting base (2), and the limiting ring (52) is mounted on the outer side wall of the screening mechanism (4). The limiting ring (52) is used to slide vertically on the limiting rod (51). The vertical adjustment component is mounted on the mounting base (2) and located on one side of the limiting rod (51). The screening mechanism (4) is placed between the limiting rod (51) and the vertical adjustment component. The driving end of the vertical adjustment component is connected to the pressure plate (56) and can drive the pressure plate (56) to move vertically and abut against the top of the screening mechanism (4).

2. The soil testing screening device that is easy to assemble and disassemble according to claim 1, characterized in that: The screening mechanism (4) includes a cover plate (41), a base plate (42), and several screen plates (43); The chassis (42) is located between the limiting rod (51) and the vertical adjustment component. The upper end of the chassis (42) is open, and the upper surface of the chassis (42) is provided with a first slot (44). The upper ends of several of the screen trays (43) are open, and the bottom of the screen tray (43) is provided with a retaining ring (45) corresponding to the first slot (44), and the retaining ring (45) can be engaged with the first slot (44); The upper surface of the screen disc (43) is provided with a second slot (46) corresponding to the retaining ring (45), and the retaining ring (45) can be engaged with the second slot (46); The bottom of the cover plate (41) is provided with a chuck (47) corresponding to the second slot (46), and the chuck (47) can engage with the second slot (46); Limiting rings (52) are fixedly connected to the outer walls of several of the screen discs (43).

3. A soil testing screening device that is easy to assemble and disassemble according to claim 2, characterized in that: It also includes a bottom limiting component (6), which includes a slider (61), an insertion cavity (62), an arc groove (63), and an insertion entrance (64); The insertion cavity (62) is opened on the upper surface of the mounting base (2) and is located between the limiting rod (51) and the vertical adjustment assembly, for the bottom of the chassis (42) to be inserted; The arc-shaped groove (63) is formed on the inner wall of the insertion cavity (62), the insertion port (64) is formed on the upper surface of the mounting base (2), the inner end of the insertion port (64) is connected to the insertion cavity (62), and the lower end of the insertion port (64) is connected to the arc-shaped groove (63). The slider (61) is fixedly connected to the outer wall of the chassis (42). The slider (61) can pass through the inlet (64) and extend into the arc-shaped groove (63) and slide in the arc-shaped groove (63).

4. A soil testing screening device that is easy to assemble and disassemble according to claim 1, characterized in that: The vertical adjustment assembly includes a slide cylinder (53), a slide rod (54), and a screw rod (55); The slide cylinder (53) is vertically arranged on the right side of the screening mechanism (4). The slide rod (54) is slidably sleeved inside the slide cylinder (53). The upper end of the slide rod (54) is fixedly connected to one end of the pressure plate (56). A threaded through hole is opened on the outer side wall of the upper part of the slide cylinder (53). The screw (55) is threadedly connected to the threaded through hole. The inner end of the screw (55) can abut against the outer side wall of the slide rod (54). A handle is fixedly connected to the outer end of the screw (55).

5. A soil testing screening device that is easy to assemble and disassemble according to claim 1, characterized in that: The drive mechanism (3) includes a mounting bracket (31), a motor (32), a turntable (33), a rotating rod (34), an arc gear (35), a slide groove (36), a support frame (37), and a rack (38); Two support frames (37) are provided, and they are located on the left and right sides of the mounting base (2), respectively; The left and right side walls of the mounting base (2) are slidably fitted into the support frames (37) on both sides along the front and back direction of the workbench (1). The support frame (37) on the left side of the mounting base (2) has a through groove (39) along the front and back direction. The rack (38) is fixedly connected to the left side wall of the mounting base (2). The rack (38) can slide along the through groove (39). The mounting bracket (31) is set on the workbench (1) and located on the left side of the support frame (37). The left end of the arc gear (35) is rotatably connected to the mounting bracket (31). The right end of the arc gear (35) has a toothed shape. The rack (38) meshes with the arc gear (35). The arc gear (35) has a sliding groove (36) perpendicular to the rack (38). The motor (32) is mounted on the top of the mounting bracket (31). The driving end of the motor (32) is connected to the center of the top of the turntable (33). The bottom edge of the turntable (33) is provided with a vertically downward rotating rod (34). The lower end of the rotating rod (34) is slidably fitted in the slide groove (36). The motor (32) can drive the mounting base (2) to slide back and forth in the front and back direction along the mounting base (2) in the support frame (37).

Images