Soft soil layer drain pipe pre-burying device

Abstract

The invention provides a soft soil layer drainage pipe pre-burying device, and relates to the field of water conservancy projects. The four corners of the bottom end face of the frame are each provided with a supporting column in a welded mode, and the outer side faces of the supporting columns on the left side and the right side are each provided with a moving device. A reciprocating driving part is arranged on the frame, a control block is connected to the bottom of the reciprocating driving part, and a locking part is arranged on the reciprocating driving part; through cooperation of the reciprocating driving part and the flapping plate, the flapping plate flaps a soft soil layer in a reciprocating manner in the rolling process of the control roller, so that the compaction effect on the soft soil layer is improved, and the quality of the pre-burying device during pressing of the soft soil layer is improved; the problems that when an existing soft soil layer drainage pipe pre-burying device conducts pressing operation, the compaction effect on a soft soil layer is difficult to guarantee only through the rolling action of a control roller, and therefore the quality of the pre-burying device is reduced when the pre-burying device presses the soft soil layer are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy engineering, and in particular relates to a soft soil layer drainage pipe pre-embedding device. BACKGROUND

[0002] At present, in the process of water conservancy engineering construction, sometimes it is necessary to connect the river channels by using drainage pipes, and before the connection operation, the drainage pipe needs to be pre-embedded in the soil body. When pre-embedding the drainage pipe in the soil body, a pre-embedding device needs to be used.

[0003] For example, the patent application number: CN202110873438.0 discloses a water conservancy construction soft soil layer drainage pipe pre-embedding device, which comprises a fixed plate, four supporting rods are fixedly connected below the fixed plate, a fixed hole is arranged on the fixed plate, a fixed block is arranged in the fixed hole, a moving hole is arranged on the fixed block, a moving rod is arranged in the moving hole, the moving rod penetrates through the moving hole, a moving control device of the fixed block is arranged on the upper side of the fixed plate, a control block is fixedly connected below the moving rod, a control plate is fixedly connected symmetrically below the control block, a rotating hole is arranged on the side wall of the control plate, the rotating hole is connected by a rotating shaft, the rotating shaft and the rotating hole are rotatably connected, and a control roller is fixedly sleeved on the rotating shaft between the control plates. The present application can press the soil surface after pre-embedding the drainage pipe, so that the soil surface is more solid, and the drainage pipe is more solid.

[0004] The above-mentioned soft soil layer drainage pipe pre-embedding device can press the ground by the control roller with the rotating shaft as the center during use, but only the rolling action of the control roller is used during the pressing operation, which is difficult to ensure the compaction effect of the soft soil layer, thereby reducing the quality of the above-mentioned pre-embedding device when pressing the soft soil layer. Although the position of the control roller can be adjusted up and down to satisfy the position of the control roller after pressing, the height of the control roller is adjusted and fixed by tightening the nut, and the nut is easy to loosen during the rolling process of the control roller, thereby causing the height of the control roller to change, thereby reducing the reliability of the control roller after height adjustment. SUMMARY

[0005] Therefore, the present application provides a soft soil layer drainage pipe pre-embedding device to solve the problem that the existing soft soil layer drainage pipe pre-embedding device only uses the rolling action of the control roller during the pressing operation, which is difficult to ensure the compaction effect of the soft soil layer, thereby reducing the quality of the above-mentioned pre-embedding device when pressing the soft soil layer.

[0006] The application provides a soft soil layer drain pipe pre-burying device, which specifically comprises a frame, a support column is welded at each corner of the bottom end face of the frame, a moving device is installed on the outer side face of the left and right two support columns, a reciprocating driving part is arranged on the frame, a control block is connected to the bottom of the reciprocating driving part, a locking part is arranged on the reciprocating driving part, two control rollers are rotationally connected to the bottom of the control block through pivots, a reciprocating driving piece is arranged on the bottom of the control block, and a beating plate is arranged on the bottom of the reciprocating driving piece.

[0007] Further, four transverse guide rods are arranged in the inner side of the frame, and a strip-shaped sliding groove is formed in the front and rear side faces of the inner side of the frame.

[0008] Further, the reciprocating driving part comprises a driving motor, a reciprocating screw rod, a reciprocating moving block and a screw rod nut, the driving motor is installed in the middle of the right end face of the frame, a rotating shaft of the driving motor penetrates through the right end face of the frame, the rotating shaft of the driving motor is fixedly connected with the reciprocating screw rod at the left end, and the reciprocating screw rod is connected with the screw rod nut through a spiral groove at the outside.

[0009] Further, when the reciprocating screw rod is in a rotating state, the screw rod nut moves leftward and rightward with the reciprocating moving block.

[0010] Further, four sliding rods and two sliding columns are fixedly connected to the upper end face of the control block in a front-rear symmetry mode, and the four sliding rods and the two sliding columns are slidably connected with the reciprocating moving block.

[0011] Further, the locking part comprises a box body, locking sliding blocks, locking insertion rods and a partition plate, the box body is fixedly installed in the middle of the upper end face of the reciprocating moving block, the partition plate is arranged in the middle of the inner side of the box body, springs are arranged on the front and rear side faces of the inner side of the box body, a locking sliding block is slidably connected to each of the front and rear ends of the box body, and a locking insertion rod is arranged at the head end of each locking sliding block and penetrates through the head of the box body.

[0012] Further, when the locking part is in a locking limiting state, the head ends of the two locking insertion rods are respectively inserted into the adjusting insertion holes formed in the two sliding columns.

[0013] Further, the mobile device comprises an F-shaped support plate, vertical sliding rods, an adjusting screw, a lifting block and square columns, the F-shaped support plate is fixedly connected to the support column, four vertical sliding rods are fixedly connected to the inside of the F-shaped support plate in a front-rear symmetrical manner, and the lifting block is slidingly connected to the outside of the four vertical sliding rods; the F-shaped support plate is rotatably connected to the middle part of the adjusting screw, and the adjusting screw is connected to the lifting block through threads, two square columns are fixedly installed on the front-rear symmetrical outside of the lifting block, and a universal wheel is installed at the lower end of each square column.

[0014] Further, the reciprocating driving part comprises a motor, an incomplete gear, a reciprocating lifting plate, a lifting rack, a rotating shaft, a vertical sliding rod, a guide sliding block and an annular limiting plate, the motor is installed on the bottom end face of the control block, the rotating shaft is fixedly connected to the rotating shaft of the motor, the incomplete gear is fixedly installed on the outside of the rotating shaft, and the rotating shaft is rotatably connected to the bottom end face of the control block; four vertical sliding rods are welded to the upper end face of the reciprocating lifting plate, guide sliding blocks are slidingly connected to the outside of the front and rear vertical sliding rods, and the two guide sliding blocks are fixedly connected to the front and rear end faces of the control block; an annular limiting plate is arranged on the outside of each vertical sliding rod, and a spring is sleeved between the opposite faces of the guide sliding block and the annular limiting plate on the outside of each vertical sliding rod; and the lifting rack is fixedly connected to the upper end face of the reciprocating lifting plate.

[0015] Further, four sliding rod parts are welded to the upper end face of the beating plate, a guide block is slidingly connected to the outside of each sliding rod part, and the four guide blocks are fixedly connected to the reciprocating lifting plate; and a spring is sleeved between the beating plate and the guide block on the outside of each sliding rod part.

[0016] Beneficial effects

[0017] 1、The motor is started in the rolling process of the control roller, the rotating shaft of the motor drives the rotating shaft and the incomplete gear to rotate counterclockwise, the incomplete gear drives the lifting rack, the reciprocating lifting plate and the beating plate to move upward when the incomplete gear is engaged with the lifting rack, and then the reciprocating lifting plate drives the beating plate to move downward rapidly under the elastic force of the spring on the outside of the vertical sliding rod when the incomplete gear is disengaged from the lifting rack, so that the beating plate reciprocally beats the soft soil layer, the compaction effect on the soft soil layer is improved, and the quality of the pre-embedded device when pressing the soft soil layer is improved.

[0018] 2、The application can be adjusted to the height of the control roller, and then only two locking sliders are loosened, and the two locking sliders are moved to the opposite direction under the spring action of the two sides of the partition plate with the two locking rods, so that the two locking rod heads are respectively inserted into the adjustment insertion holes of the two sliding columns, so that the two sliding columns are effectively limited on the reciprocating moving block, and the height of the control roller is prevented from changing during rolling, thereby improving the reliability of the control roller after height adjustment.

[0019] 3、The application can be moved to the soft soil layer above the soft soil layer through the universal wheel at the lower end of the square support column, and then the pre-embedded device is braked, the lifting block is moved upward with the square support column and the universal wheel under the screw action by rotating the vertical sliding rod, so that the lower end of the support column is in contact with the ground, so that the pre-embedded device is effectively braked on the ground, thereby improving the flexibility of the pre-embedded device in use.

[0020] 4、The application improves the stroke of the control roller when moving left and right through the cooperation of the reciprocating screw rod and the screw nut, thereby improving the compaction range of the pre-embedded device on the soft soil layer. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below.

[0022] In the drawings:

[0023] Figure 1 is a first perspective view of the structure of the embodiment of the application.

[0024] Figure 2 is a second perspective view of the structure of the embodiment of the application.

[0025] Figure 3 is a structure schematic view of the embodiment of the application in a disassembled state.

[0026] Figure 4 is a frame partial cross-sectional structure schematic view of the embodiment of the application.

[0027] Figure 5 is a reciprocating moving block and locking part structure schematic view of the embodiment of the application.

[0028] Figure 6 is a structure schematic view of the moving device after disassembly of the embodiment of the application.

[0029] Figure 7Fig. 1 is a schematic view of a reciprocating driving member and a beating plate structure according to an embodiment of the present application.

[0030] List of reference signs

[0031] 1, frame; 101, support column; 102, transverse guide rod; 103, strip-shaped sliding slot; 2, reciprocating driving part; 201, driving motor; 202, reciprocating screw rod; 203, reciprocating moving block; 204, screw rod nut; 3, control block; 301, sliding rod; 302, sliding column; 303, adjusting insertion hole; 4, locking part; 401, box body; 402, locking sliding block; 403, locking insertion rod; 404, partition plate; 5, control roller; 6, moving device; 601, Z-shaped support plate; 602, vertical sliding rod; 603, adjusting screw rod; 604, lifting block; 605, square support column; 7, reciprocating driving member; 701, motor; 702, incomplete gear; 703, reciprocating lifting plate; 704, lifting rack; 705, rotating shaft; 706, vertical sliding rod; 707, guide sliding block; 708, annular limiting plate; 8, beating plate; 801, sliding rod member; 802, guide block. DETAILED DESCRIPTION

[0032] In order to make the purpose, scheme and advantages of the technical scheme of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with the drawings of the specific embodiments of the present application.

[0033] Embodiment: Please refer to Figures 1 to 7 as shown:

[0034] The present application provides a kind of soft soil layer drain pipe pre-burying device, including frame 1;Frame 1 bottom end face four corners are all welded with a support column 101, and the outer side of left and right two side support columns 101 is equipped with a moving device 6;Frame 1 is equipped with reciprocating driving part 2, and reciprocating driving part 2 bottom is connected with control block 3, and reciprocating driving part 2 is equipped with locking part 4;Control block 3 bottom is rotatably connected with two control rollers 5 by rotating shaft, control block 3 bottom is equipped with reciprocating driving member 7, and reciprocating driving member 7 bottom is equipped with beating plate 8;

[0035] The inner side of frame 1 is equipped with four transverse guide rods 102, and the inner side of frame 1 is equipped with a strip-shaped sliding slot 103 on the front and rear sides, which is used for sliding connection with the sliding blocks in the middle of the front and rear ends of the reciprocating moving block 203, to improve the guiding effect of the reciprocating moving block 203.

[0036] As Figure 1 and Figure 5As shown, the reciprocating driving part 2 comprises a driving motor 201, a reciprocating screw rod 202, a reciprocating moving block 203 and a screw nut 204, the driving motor 201 is installed at the middle part of the right end surface of the frame 1, and the rotating shaft of the driving motor 201 penetrates through the right end surface of the frame 1, the rotating shaft of the driving motor 201 is fixedly connected with the reciprocating screw rod 202 at the left end, and the screw nut 204 is connected with the reciprocating screw rod 202 outside through a spiral groove; the reciprocating moving block 203 is slidingly connected on the four horizontal guide rods 102, and a sliding block is arranged at the middle part of the front and rear end surfaces of the reciprocating moving block 203; a square opening is arranged at the middle part of the left end surface of the reciprocating moving block 203, and the screw nut 204 is fixedly connected inside the square opening;

[0037] When the reciprocating screw rod 202 is in a rotating state, the screw nut 204 moves left and right with the reciprocating moving block 203, and through the arrangement of the reciprocating driving part 2, the control block 3 and the control roller 5 can move left and right.

[0038] As shown in Figures 1 to 3 , the upper end surface of the control block 3 is fixedly connected with four sliding rods 301 and two sliding columns 302 in a front-rear symmetrical manner, and the four sliding rods 301 and the two sliding columns 302 are slidingly connected with the reciprocating moving block 203; the opposite surfaces of the two sliding columns 302 are uniformly provided with adjusting insertion holes 303 for inserting the locking insertion rods 403.

[0039] As shown in Figure 1 and Figure 5 , the locking part 4 comprises a box body 401, a locking sliding block 402, a locking insertion rod 403 and a partition plate 404, the box body 401 is fixedly installed at the middle part of the upper end surface of the reciprocating moving block 203, and the partition plate 404 is arranged inside the middle side of the box body 401, and springs are arranged on the front and rear sides of the box body 401 inside the partition plate 404; one locking sliding block 402 is slidingly connected at each of the front and rear ends of the box body 401, and each locking sliding block 402 is provided with a locking insertion rod 403 penetrating through the head of the box body 401 at the head end;

[0040] When the locking part 4 is in a locking limiting state, the head ends of the two locking insertion rods 403 are respectively inserted into the adjusting insertion holes 303 arranged on the two sliding columns 302, so that the sliding columns 302 are effectively limited on the reciprocating moving block 203.

[0041] As shown in Figure 1 and Figure 6As shown, the moving device 6 includes a U-shaped support plate 601, vertical sliding rods 602, adjusting screws 603, lifting blocks 604, and square pillars 605. The U-shaped support plate 601 is fixedly connected to the support column 101, and four vertical sliding rods 602 are fixedly connected to the inner side of the U-shaped support plate 601 in a front-to-back symmetrical manner. Lifting blocks 604 are slidably connected to the outer side of the four vertical sliding rods 602. An adjusting screw 603 is rotatably connected to the middle of the U-shaped support plate 601, and the adjusting screw 603 is threadedly connected to the lifting block 604. Two square pillars 605 are fixedly installed on the outer side of the lifting block 604 in a front-to-back symmetrical manner, and each square pillar 605 is equipped with a caster wheel at its lower end. The moving device 6 improves the flexibility of this pre-embedded device during use.

[0042] like Figure 1 and Figure 7 As shown, the reciprocating drive component 7 includes a motor 701, an incomplete gear 702, a reciprocating lifting plate 703, a lifting rack 704, a rotating shaft 705, a vertical sliding rod 706, a guide slider 707, and an annular limiting plate 708. The motor 701 is mounted on the bottom surface of the control block 3, and the rotating shaft 705 is fixedly connected to the rotating shaft of the motor 701. The incomplete gear 702 is fixedly mounted on the outside of the rotating shaft 705, and the rotating shaft 705 is rotatably connected to the bottom surface of the control block 3. Four vertical sliding rods are welded to the upper surface of the reciprocating lifting plate 703. 706, and guide sliders 707 are slidably connected to the outside of the front and rear vertical sliding rods 706, and the two guide sliders 707 are fixedly connected to the front and rear end faces of the control block 3; each vertical sliding rod 706 is provided with an annular limiting plate 708, and a spring is sleeved between the guide slider 707 and the annular limiting plate 708 on the outside of each vertical sliding rod 706; the lifting rack 704 is fixedly connected to the upper end face of the reciprocating lifting plate 703, and is used to move the tapping plate 8 up and down reciprocally through the setting of the reciprocating drive component 7;

[0043] Four sliding rods 801 are welded to the upper end face of the striking plate 8, and a guide block 802 is slidably connected to the outside of each sliding rod 801. The four guide blocks 802 are fixedly connected to the reciprocating lifting plate 703. A spring is sleeved on the outside of each sliding rod 801 between the striking plate 8 and the guide block 802.

[0044] The specific usage and function of this embodiment: In the construction of water conservancy projects, when it is necessary to compact the soft soil layer above the pre-buried drainage pipe, the pre-buried device can be moved to the top of the soft soil layer by using the universal wheel at the lower end of the square support column 605. Then, by rotating the vertical slide bar 602, the lifting block 604 moves the square support column 605 and the universal wheel upward under the action of the thread, so that the lower end of the support column 101 contacts the ground, thereby effectively braking the pre-buried device on the ground. Moreover, the setting of the moving device 6 makes the pre-buried device more flexible when moving, and can quickly switch to the braking state when braking, thereby improving the flexibility of the pre-buried device when in use.

[0045] Then, the height of the control roller 5 is adjusted as needed. During adjustment, simply pull the two locking sliders 402 simultaneously in opposite directions. This causes the two locking sliders 402 to move along with the two locking rods 403 in opposite directions, thus pulling the two locking rods 403 out of the adjustment holes 303 on the two sliding posts 302. This removes the limiting effect of the two sliding posts 302 on the reciprocating block 203. Then, the control block 3 is moved up and down, causing the control roller 5 to move up and down, thereby adjusting the rolling height of the control roller 5. Once the height of the control roller 5 is adjusted, only... The two locking sliders 402 need to be released so that the two locking sliders 402 can move the two locking rods 403 in opposite directions under the action of the springs on both sides of the partition plate 404. This allows the ends of the two locking rods 403 to be inserted into the adjustment holes 303 on the two sliding columns 302 respectively. This allows the two sliding columns 302 to be effectively limited on the reciprocating block 203. Furthermore, through the insertion of the locking rods 403 into the adjustment holes 303, the height of the control roller 5 is prevented from changing during the rolling process, thereby improving the reliability of the control roller 5 after height adjustment.

[0046] Then, the drive motor 201 is started, causing the shaft of the drive motor 201 to rotate, which in turn rotates the reciprocating screw 202. This causes the screw nut 204 to move the reciprocating moving block 203, four sliding rods 301, two sliding columns 302, control block 3, and two control rollers 5 back and forth. Through the cooperation of the reciprocating screw 202 and the screw nut 204, the stroke of the control rollers 5 during their back and forth movement is increased, thereby increasing the compaction range of the soft soil layer by this pre-embedded device. Furthermore, during the rolling process of the control rollers 5, the motor 701 can be started, causing the shaft of the motor 701 to rotate... The moving shaft 705 and the incomplete gear 702 rotate counterclockwise. When the incomplete gear 702 meshes with the lifting rack 704, it will move the lifting rack 704, the reciprocating lifting plate 703 and the striking plate 8 upward. Then, when the incomplete gear 702 separates from the lifting rack 704, the reciprocating lifting plate 703 will move the striking plate 8 rapidly downward under the action of the spring force outside the vertical sliding rod 706, so that the bottom end of the striking plate 8 will strike the soft soil layer, thereby improving the compaction effect on the soft soil layer and improving the quality of this pre-embedded device when pressing the soft soil layer.

Claims

1. A pre-embedded device for drainage pipes in soft soil layers, characterized in that, include: A frame (1); a support column (101) is welded to each of the four corners of the bottom surface of the frame (1), and a moving device (6) is installed on the outer side of the support column (101) on both the left and right sides; a reciprocating drive part (2) is provided on the frame (1), and a control block (3) is connected to the bottom of the reciprocating drive part (2), and a locking part (4) is provided on the reciprocating drive part (2); two control rollers (5) are rotatably connected to the bottom of the control block (3) through a rotating shaft, and a reciprocating drive component (7) is provided at the bottom of the control block (3), and a tapping plate (8) is provided at the bottom of the reciprocating drive component (7).

2. The soft soil layer drainage pipe pre-embedding device as described in claim 1, characterized in that: The frame (1) has four horizontal guide rods (102) on its inner side, and a strip groove (103) is opened on both the front and rear sides of the inner side of the frame (1).

3. The soft soil layer drainage pipe pre-embedding device as described in claim 1, characterized in that: The reciprocating drive unit (2) includes a drive motor (201), a reciprocating lead screw (202), a reciprocating moving block (203), and a lead screw nut (204). The drive motor (201) is installed in the middle of the right end face of the frame (1), and the shaft of the drive motor (201) passes through the right end face of the frame (1). The left end of the shaft of the drive motor (201) is fixedly connected to the reciprocating lead screw (202), and the lead screw nut (204) is connected to the outside of the reciprocating lead screw (202) through a spiral groove. The reciprocating moving block (203) is slidably connected to four transverse guide rods (102), and a sliding block is provided in the middle of the front and rear end faces of the reciprocating moving block (203). A square opening is provided in the middle of the left end face of the reciprocating moving block (203), and the lead screw nut (204) is fixedly connected inside the square opening.

4. The soft soil layer drainage pipe pre-embedding device as described in claim 3, characterized in that: When the reciprocating lead screw (202) is in a rotating state, the lead screw nut (204) moves back and forth with the reciprocating moving block (203).

5. The soft soil layer drainage pipe pre-embedding device as described in claim 3, characterized in that: The upper surface of the control block (3) is fixedly connected with four sliding rods (301) and two sliding columns (302) in a symmetrical manner, and the four sliding rods (301) and two sliding columns (302) are slidably connected to the reciprocating moving block (203); the two sliding columns (302) are evenly provided with adjustment holes (303) on their opposite surfaces.

6. The soft soil layer drainage pipe pre-embedding device as described in claim 5, characterized in that: The locking part (4) includes a box body (401), a locking slider (402), a locking rod (403), and a partition (404). The box body (401) is fixedly installed in the middle of the upper end face of the reciprocating moving block (203), and a partition (404) is provided in the middle of the inside of the box body (401). Springs are provided on both the front and rear sides of the partition (404) inside the box body (401). A locking slider (402) is slidably connected to both the front and rear ends inside the box body (401), and a locking rod (403) is provided at the head end of each locking slider (402) through the head of the box body (401).

7. The soft soil layer drainage pipe pre-embedding device as described in claim 6, characterized in that: When the locking part (4) is in the locking limit state, the ends of the two locking rods (403) are respectively inserted into the adjustment holes (303) opened on the two sliding columns (302).

8. The soft soil layer drainage pipe pre-embedding device as described in claim 1, characterized in that: The moving device (6) includes a U-shaped support plate (601), vertical slide rods (602), adjusting screws (603), lifting blocks (604), and square pillars (605). The U-shaped support plate (601) is fixedly connected to the support column (101), and four vertical slide rods (602) are fixedly connected to the inner side of the U-shaped support plate (601) in a front-to-back symmetrical manner. The lifting blocks (604) are slidably connected to the outer side of the four vertical slide rods (602). An adjusting screw (603) is rotatably connected to the middle of the U-shaped support plate (601), and the adjusting screw (603) is threadedly connected to the lifting block (604). Two square pillars (605) are fixedly installed on the outer side of the lifting block (604) in a front-to-back symmetrical manner, and a universal wheel is installed at the lower end of each square pillar (605).

9. The soft soil layer drainage pipe pre-embedding device as described in claim 1, characterized in that: The reciprocating drive component (7) includes a motor (701), an incomplete gear (702), a reciprocating lifting plate (703), a lifting rack (704), a rotating shaft (705), a vertical sliding rod (706), a guide slider (707), and an annular limiting plate (708). The motor (701) is mounted on the bottom surface of the control block (3), and the rotating shaft (705) is fixedly connected to the rotating shaft of the motor (701). The incomplete gear (702) is fixedly mounted on the outside of the rotating shaft (705), and the rotating shaft (705) is rotatably connected to the bottom surface of the control block (3). Four vertical sliding rods (706) are welded to the upper end face of the lowering plate (703), and guide sliders (707) are slidably connected to the outside of the vertical sliding rods (706) on both the front and rear sides. The two guide sliders (707) are fixedly connected to the front and rear end faces of the control block (3). Each vertical sliding rod (706) is provided with an annular limiting plate (708) on the outside, and a spring is sleeved between the guide slider (707) and the annular limiting plate (708) on the outside of each vertical sliding rod (706). The lifting rack (704) is fixedly connected to the upper end face of the reciprocating lifting plate (703).

10. The soft soil layer drainage pipe pre-embedding device as described in claim 9, characterized in that: Four sliding rods (801) are welded to the upper end face of the striking plate (8), and a guide block (802) is slidably connected to the outside of each sliding rod (801). The four guide blocks (802) are fixedly connected to the reciprocating lifting plate (703). A spring is sleeved on the outside of each sliding rod (801) between the striking plate (8) and the guide block (802).

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