Deep foundation pit leaking stoppage device

Abstract

The invention provides a deep foundation pit leaking stoppage device which comprises a bottom frame, a sliding frame is arranged at the top of the bottom frame in a sliding mode, a horizontal adjusting mechanism for driving the sliding frame to move is arranged at one end of the bottom frame, and a vertical frame is vertically arranged at the top of the end, away from the horizontal adjusting mechanism, of the sliding frame. A bottom rod is fixedly arranged on the side, away from the sliding frame, of the bottom end of the vertical frame, a bottom sealing strip is fixedly arranged on the side, away from the vertical frame, of the bottom rod, and a plurality of side plugging units detachably and fixedly connected with the vertical frame are sequentially arranged on the top of the bottom sealing strip. The side plugging unit is provided with a plugging plate, and two parallel side sealing strips are arranged on the side, away from the vertical frame, of the plugging plate. The seepage of the weighted side wall can be avoided, and the plugging construction convenience is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit construction, and in particular relates to a deep foundation pit leakage plugging device. Background Art

[0002] Deep foundation pit construction is a very common construction method in modern civil engineering construction. The excavation depth of deep foundation pits is generally a few meters deep or tens of meters deep. Deep foundation pit construction can make use of underground space. When conducting deep foundation pit construction, in order to avoid soil collapse affecting the safety of construction in the pit and the stability of the surrounding building foundations, and to avoid concentrated infiltration of groundwater into the pit, thereby ensuring the stability of the foundation pit and the safety and convenience of operations in the pit, it is generally necessary to do advance enclosure treatment before deep foundation pit excavation. During the construction process, groundwater leakage is inevitable in the foundation pit enclosure, and technology is needed to seal the leakage.

[0003] In the prior art, a Chinese utility model patent document with authorization announcement number CN212656247U discloses a deep foundation pit plugging device. During the construction process, it is inconvenient to press the "J"-shaped steel plate against the side wall of the deep foundation pit. During the construction, leakage will leak from the edge of the "J"-shaped steel plate, and it is inconvenient to extract the leakage and inject slurry.

[0004] The Chinese utility model patent document with the authorization announcement number CN221345650U discloses a deep foundation pit plugging device. When plugging the leakage of the deep foundation pit, the anchor rod is first installed on the side wall of the deep foundation pit, and then the cover shell is installed on the anchor rod, and then the frame plate installed with the hydraulic push member is installed on the anchor rod of the plugging box shell assembly through the expansion column, and the cover shell is pushed by the telescopic end of the hydraulic push member, so that the cover shell can fit tightly on the side wall of the deep foundation pit, which can effectively prevent the leakage from the edge of the cover shell; when the anchor rod is installed on the side wall of the foundation pit, the leakage is easily aggravated, and the cover shell is pushed by the telescopic end of the hydraulic push member, so that the cover shell can fit tightly on the side wall of the deep foundation pit to prevent the leakage from the edge of the cover shell; the hydraulic push member needs to be used in conjunction with the liquid pump station, and the convenience of plugging construction is poor.

[0005] Therefore, it is necessary to design a deep foundation pit plugging device that can avoid aggravating side wall leakage and improve the convenience of plugging construction to solve the current technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a deep foundation pit plugging device which can avoid aggravating side wall leakage and improve the convenience of plugging construction.

[0007] The technical solution of the present invention is: a deep foundation pit plugging device, including a base frame, a slide is slidably arranged on the top of the base frame, a horizontal adjustment mechanism for driving the slide to move is arranged at one end of the base frame, a vertical frame is vertically arranged on the top of one end of the slide away from the horizontal adjustment mechanism, a bottom rod is fixedly arranged on the side of the bottom end of the vertical frame away from the slide, a bottom sealing strip is fixedly arranged on the side of the bottom rod away from the vertical frame, a plurality of side sealing units detachably fixedly connected to the vertical frame are arranged in sequence on the top of the bottom sealing strip; the side sealing unit has a sealing plate, and two parallel side sealing strips are arranged on the side of the sealing plate away from the vertical frame.

[0008] A side support strip is fixedly provided on the side of the side sealing strip close to the sealing plate, a sealing gasket is fixedly provided on the side of the side supporting strip close to the sealing plate, and a side sealing plate adjustment mechanism is provided on the outer side of the side supporting strip, and the side sealing plate adjustment mechanism is used for reciprocatingly adjusting the position of the side support strip along the long side direction of the sealing plate.

[0009] The side sealing plate adjustment mechanism comprises a support seat fixedly arranged on one side of the sealing plate and parallel to the side support strip, a side sealing screw is vertically threadedly connected to the support seat, the end of the side sealing screw is rotatably connected to the side support strip, and a hand wheel is fixedly arranged on the end of the side sealing screw away from the side support strip; two side sealing guide rods parallel to the side sealing screw are fixedly arranged on the side support strip, and the side sealing guide rods are slidably connected to the support seat.

[0010] An insert block is fixedly arranged at one end of the side sealing strip, a slot matching the insert block is arranged at the other end of the side sealing strip, and lower slots matching the insert block are evenly arranged at the top of the bottom rod.

[0011] A guide hole is formed on the blocking plate, and a blocking bolt is disposed on the outer side of the blocking plate. The blocking bolt is connected to the inner thread of the guide hole.

[0012] The vertical frame has two parallel side support rods, the ends of the two side support rods are fixedly connected by a cross rod, and the side support rods are evenly provided with insertion holes; two groups of plug mechanisms are symmetrically arranged on the side of the blocking plate away from the side sealing strip, and the plug mechanisms are matched and connected with the insertion holes.

[0013] The plug mechanism comprises an outer plug support and an outer plug support fixedly arranged on one side of the blocking plate and parallel to each other, two plugs respectively matching the two sockets are slidably arranged inside the outer plug support and the outer plug support, a pull plate is fixedly arranged on the plug between the outer plug support and the outer plug support, a spring is sleeved on the outer side of the plug between the pull plate and the inner plug support, one end of the plug cooperates with the socket, and a limit plate is fixedly arranged on the other end of the plug.

[0014] The bottom end of the vertical frame is hinged to the end of the slide, and an end of the vertical frame away from the slide and an end of the slide away from the vertical frame are provided with diagonal bracing components with adjustable lengths.

[0015] The diagonal brace assembly comprises a lower hinge seat hinged to one end of the slide, a fixed diagonal brace rod is arranged on the lower hinge seat, a rotating tube is rotatably arranged on the end of the fixed diagonal brace rod away from the lower hinge seat, a diagonal brace screw is internally threadedly connected to the end of the rotating tube away from the fixed diagonal brace rod, an upper hinge seat is fixedly arranged on the end of the diagonal brace screw away from the rotating tube, and the upper hinge seat is hinged to the top end of the vertical frame.

[0016] The horizontal adjustment mechanism includes a crossbeam fixedly arranged on the top of the base frame and parallel to the short side of the slide, a horizontal screw is vertically threadedly connected to the middle part of the crossbeam, the end of the horizontal screw is rotatably connected to the end of the slide, an adjustment handle is arranged on the end of the horizontal screw away from the slide, two horizontal guide rods parallel to the horizontal screw are symmetrically arranged at the end of the slide, and the horizontal guide rods are slidably connected to the crossbeam; fixed plates are evenly fixedly arranged around the base frame, sliding grooves are fixedly arranged on both sides of the top of the base frame, and the slide is slidably arranged inside the sliding grooves.

[0017] Beneficial effects of the present invention:

[0018] (1) In the present invention, when a crack is generated on the enclosure body and water flows outward, the frame is placed toward the crack, the base frame is fixed to the ground, a corresponding number of plugging units are selected according to the height of the crack in the vertical direction and are sequentially installed on one side of the frame from bottom to top, the slide and the frame are moved by the horizontal adjustment mechanism, the bottom sealing strip and the side sealing strip are brought into contact with the enclosure body, a grouting space is formed to surround the crack, the plugging material is injected into the space and the plugging material is waited for to solidify to complete the plugging;

[0019] (2) The bottom frame fixed on the ground supports the frame and the side plugging unit on one side, without destroying the enclosure body for fixing, which can avoid aggravating the leakage of the side wall and improve the convenience of plugging construction. At the same time, the side plugging unit and the enclosure body are firmly connected to ensure the tightness of the plugging;

[0020] (3) During the plugging construction, plugging can be carried out without relying on other external equipment, which improves the convenience of plugging construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the deep foundation pit plugging device in the present invention.

[0022] Figure 2 It is a partial structural schematic diagram of the deep foundation pit plugging device in the present invention.

[0023] Figure 3 This is one of the structural schematic diagrams of the side blocking unit in the present invention.

[0024] Figure 4 This is the second structural schematic diagram of the side blocking unit in the present invention.

[0025] Figure 5 It is a schematic diagram of the use status of a side blocking unit in the present invention. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to be any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limitations.

[0027] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] like Figures 1 to 4As shown, a deep foundation pit plugging device comprises a base frame 1, a slide 2 is slidably arranged on the top of the base frame 1, a horizontal adjustment mechanism 4 for driving the slide 2 to move is arranged at one end of the base frame 1, a vertical frame 3 is vertically arranged on the top of the end of the slide 2 away from the horizontal adjustment mechanism 4, a bottom rod 31 is fixedly arranged on the side of the bottom end of the vertical frame 3 away from the slide, a bottom sealing strip 32 is fixedly arranged on the side of the bottom rod 31 away from the vertical frame 3, and a plurality of side sealing units 5 detachably fixedly connected to the vertical frame 3 are arranged in sequence on the top of the bottom sealing strip 32; the side sealing unit 5 has a sealing plate 51, and two parallel side sealing strips 52 are arranged on the side of the sealing plate 51 away from the vertical frame 3; in this embodiment, when a crack is generated on the enclosure body and water flows outward, the vertical frame 3 faces the crack, fixes the base frame 1 to the ground, and adjusts the water level according to the crack. A corresponding number of plugging units 5 are selected in the vertical direction and are installed on one side of the vertical frame 3 from bottom to top in sequence; the slide 2 and the vertical frame 3 are moved by the horizontal adjustment 4 mechanism so that the bottom sealing strip 32 and the side sealing strip 52 are in contact with the enclosure body, forming a grouting space that surrounds the crack inside; the plugging material is injected into the space and the plugging material is waited for to solidify to complete the plugging; the vertical frame 3 and the side plugging units 5 on one side are supported by the base frame 1 fixed on the ground, and there is no need to destroy the enclosure body for fixing, which can avoid aggravating the leakage of the side wall and improve the convenience of the plugging construction. At the same time, the side plugging unit 5 and the enclosure body are firmly abutted to ensure the tightness of the plugging; during the plugging construction, there is no need to rely on other external equipment to carry out the plugging, which improves the convenience of the plugging construction.

[0029] In some embodiments, a side support strip 53 is fixedly provided on one side of the side sealing strip 52 close to the blocking plate 51, a sealing gasket 54 is fixedly provided on one side of the side supporting strip 53 close to the blocking plate 51, the sealing gasket 54 is used to improve the sealing between the side supporting strip 53 and the blocking plate 51, and a side sealing plate adjusting mechanism 56 is provided on the outer side of the side supporting strip 53, the side sealing plate adjusting mechanism 56 is used to reciprocate the position of the side supporting strip 53 along the long side direction of the blocking plate 51; the position of the side supporting strip 53 can be adjusted by the side sealing plate adjusting mechanism 56, By changing the spacing between the two side sealing strips 52 and making the spacing slightly larger than the maximum width of the crack in the horizontal direction when plugging, the crack can be sealed between the two side sealing strips 52; by adjusting the position of the side sealing strips 52, on the one hand, it can match the maximum width of the crack to avoid excessive spacing between the two side sealing strips 52, which would cause waste of plugging materials; on the other hand, after the base frame 1 is fixed, the position of the side sealing strips 52 can be adjusted by the side sealing plate adjustment mechanism 56 to make the space between the two side sealing strips 52 correspond to the crack.

[0030] In some embodiments, the side sealing plate adjustment mechanism 56 has a support seat 561 fixedly arranged on one side of the sealing plate 51 and parallel to the side support strip 53, and a side sealing screw 562 is vertically threadedly connected to the support seat 561, and the end of the side sealing screw 562 is rotatably connected to the side support strip 53, and a hand wheel 564 is fixedly arranged on the end of the side sealing screw 562 that is away from the side support strip 53; two side sealing guide rods 563 parallel to the side sealing screw 562 are fixedly arranged on the side support strip 53, and the side sealing guide rods 563 are slidably connected to the support seat 561, and the side sealing screw 562 is rotated by the hand wheel 564, and the side sealing screw 562 will drive the side support strip 53 and the side sealing strip 52 to move, thereby realizing the position adjustment of the side sealing strip 52.

[0031] In some embodiments, a plug block 531 is fixedly provided at one end of the side sealing strip 53, a slot 532 matching the plug block 531 is provided at the other end of the side sealing strip 53, and a lower slot 311 matching the plug block 531 is evenly provided on the top of the bottom rod 31; the plug block 531 and the lower slot 311 are matched and inserted together between the sealing plate 51 and the bottom rod 31, which can improve the strength of the connection between the sealing plate 51 and the bottom rod 31; the plug block 531 and the slot 532 are matched and inserted together between the sealing plates 51 and the sealing plates 51, which can improve the strength of the connection between the sealing plates 51 and the sealing plates 51.

[0032] In some embodiments, a guide hole 55 is opened on the sealing plate 51, and a sealing bolt 57 is arranged on the outer side of the sealing plate 51, and the sealing bolt 57 is connected to the internal thread of the guide hole 55; before grouting, by opening the sealing bolt 57, the residual water between the sealing plate 51 and the maintenance body can be discharged through the guide hole 55, thereby ensuring the quality of the grouting construction.

[0033] In some embodiments, the vertical frame 3 has two parallel side support rods 33, the ends of the two side support rods 33 are fixedly connected by a cross bar 34, and insertion holes 35 are evenly opened on the side support rods 33; two groups of plug mechanisms 58 are symmetrically arranged on the side of the sealing plate 51 away from the side sealing strip 52, and the plug mechanisms 58 are matched and connected with the insertion holes 35, so as to realize a detachable fixed connection between the side blocking unit 5 and the vertical frame 3.

[0034] In some embodiments, the plug mechanism 58 has a plug outer support 581 and a plug outer support 584 fixedly arranged on one side of the blocking plate 51 and parallel to each other. Two plugs 582 respectively matching the two sockets 35 are slidably arranged inside the plug outer support 581 and the plug outer support 584. A pull plate 586 is fixedly arranged on the plug 582 between the plug outer support 581 and the plug outer support 584. A spring 583 is sleeved on the outer side of the plug 582 between the pull plate 586 and the plug inner support 584. One end of the plug 582 cooperates with the socket 35, and a limit plate 585 is fixedly arranged on the other end of the plug 582. When the side blocking unit 5 is installed on the vertical frame 3, the pull plate 586 is pulled toward the plug inner support 584 to compress the spring 583. 2. The end of the plug 582 enters into the interior of the plug outer support 581, and then the blocking plate 51 is installed between the two side support rods 33. Both ends of the blocking plate 51 are provided with positioning steps 511 that match the side support rods 33, which facilitates the rapid positioning between the blocking plate 51 and the side support rods 33. Then, the blocking plate 51 is adjusted up and down to make the plug 582 correspond to the socket 35, and then the pull plate 586 is released, the spring 583 is reset, and the plug 582 is inserted into the socket 35 to achieve the connection between the side blocking unit 5 and the vertical frame 3; when disassembling, the pull plate 586 is pulled toward the plug inner support 584 again to compress the spring 582, and the end of the plug 582 is pulled out from the socket 35, and the side blocking unit 5 can be removed from the vertical frame 3.

[0035] In some embodiments, the bottom end of the vertical frame 3 is hinged to the end of the slide 2, and the end of the vertical frame 3 facing away from the slide 2 and the end of the slide 2 facing away from the vertical frame 3 are provided with a diagonal brace assembly 6 with adjustable length. When there is a deviation in the verticality between the side wall of the enclosure body and the ground, the angle between the vertical frame 3 and the slide 2 can be changed by adjusting the length of the diagonal brace assembly 6, so that the vertical frame 3 is parallel to the side wall of the maintenance body, so that the side blocking unit 5 on the vertical frame 3 is tightly sealed with the side wall of the enclosure body.

[0036] In some embodiments, the diagonal support assembly 6 has a lower hinge seat 65 hinged to one end of the slide 2, a fixed diagonal support rod 61 is arranged on the lower hinge seat 65, a rotating tube 62 is rotatably arranged on the end of the fixed diagonal support rod 61 away from the lower hinge seat 65, an internal threaded connection of a diagonal support screw 63 is arranged on the rotating tube 62 at one end away from the fixed diagonal support rod 61, an upper hinge seat 66 is fixedly arranged on the end of the diagonal support screw 63 away from the rotating tube 62, the upper hinge seat 66 is hinged to the top of the vertical frame 3, and the rotating tube 62 is rotated. The threaded structure between the rotating tube 62 and the diagonal support screw 63 cooperates, which can drive the diagonal support screw 63 to extend or retract at the end of the rotating tube 62, thereby realizing the length adjustment of the diagonal support assembly 6, changing the angle between the vertical frame 3 and the slide 2, and providing stable support for the vertical frame 3.

[0037] In some embodiments, the horizontal adjustment mechanism 4 has a crossbeam 44 fixedly arranged on the top of the base frame 1 and parallel to the short side of the slide 2, a horizontal screw 41 is vertically threadedly connected to the middle of the crossbeam 44, the end of the horizontal screw 41 is rotatably connected to the end of the slide 2, an adjustment handle 43 is arranged on the end of the horizontal screw 41 away from the slide 2, and two horizontal guide rods 42 parallel to the horizontal screw 41 are symmetrically arranged at the end of the slide 2, the horizontal guide rods 42 are slidably connected to the crossbeam 44, and the horizontal screw 41 is rotated to adjust the horizontal screw 41. Cooperating with the threaded structure between the crossbeams 44, the slide 2 can be driven to slide on the top of the base frame 1, so that the side blocking unit 5 on one side of the vertical frame 3 abuts against the inner wall of the foundation pit, and the outside of the crack is blocked by the side blocking unit 5; fixed plates 12 are evenly fixed on all sides of the base frame 1, and the base frame 1 can be fixed to the ground by anchor rods or collision bolts through the fixed plates 12, and slide grooves 11 are fixed on both sides of the top of the base frame 1, and the slide 2 is slidably set inside the slide grooves 11. Specifically, the slide grooves 11 are made of angle steel.

[0038] In some embodiments, a rectangular downward pressure sealing pad 71 corresponding to the side support strip 53 and the side sealing strip 52 is provided on the top of the side sealing unit 5 located at the top, and a pressure plate 7 is provided on the top of the downward pressure sealing pad 71. The pressure plate 7 is fixed to the top of the side support strip 53 by a tightening bolt 72 to fix the downward pressure sealing pad 71. The top of the grouting space is closed by the downward pressure fixing pad 71. After the accumulated water in the grouting space is discharged through the diversion hole 55, the sealing material can be poured into the grouting space through the diversion hole 55.

[0039] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0040] The above-mentioned embodiments only express some implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A deep foundation pit plugging device, characterized in that: It comprises a base frame, a slide is slidably arranged on the top of the base frame, a horizontal adjustment mechanism for driving the slide to move is arranged at one end of the base frame, a vertical frame is vertically arranged on the top of one end of the slide away from the horizontal adjustment mechanism, a bottom rod is fixedly arranged on the side of the bottom end of the vertical frame away from the slide, a bottom sealing strip is fixedly arranged on the side of the bottom rod away from the vertical frame, and a plurality of side blocking units detachably and fixedly connected to the vertical frame are arranged in sequence on the top of the bottom sealing strip; The side blocking unit comprises a blocking plate, and two parallel side sealing strips are arranged on a side of the blocking plate away from the vertical frame.

2. The deep foundation pit plugging device according to claim 1 is characterized in that: A side support strip is fixedly provided on the side of the side sealing strip close to the sealing plate, a sealing gasket is fixedly provided on the side of the side supporting strip close to the sealing plate, and a side sealing plate adjustment mechanism is provided on the outer side of the side supporting strip, and the side sealing plate adjustment mechanism is used for reciprocatingly adjusting the position of the side support strip along the long side direction of the sealing plate.

3. The deep foundation pit plugging device according to claim 2 is characterized in that: The side sealing plate adjustment mechanism comprises a support seat fixedly arranged on one side of the sealing plate and parallel to the side support strip, a side sealing screw is vertically threadedly connected to the support seat, the end of the side sealing screw is rotatably connected to the side support strip, and a hand wheel is fixedly arranged on the end of the side sealing screw away from the side support strip; two side sealing guide rods parallel to the side sealing screw are fixedly arranged on the side support strip, and the side sealing guide rods are slidably connected to the support seat.

4. The deep foundation pit plugging device according to claim 2 is characterized in that: An insert block is fixedly arranged at one end of the side sealing strip, a slot matching the insert block is arranged at the other end of the side sealing strip, and lower slots matching the insert block are evenly arranged at the top of the bottom rod.

5. The deep foundation pit plugging device according to claim 1 is characterized in that: A guide hole is formed on the blocking plate, and a blocking bolt is disposed on the outer side of the blocking plate. The blocking bolt is connected to the inner thread of the guide hole.

6. The deep foundation pit plugging device according to claim 1 is characterized in that: The vertical frame has two parallel side support rods, the ends of the two side support rods are fixedly connected by a cross bar, and the side support rods are evenly provided with insertion holes; Two groups of plug mechanisms are symmetrically arranged on one side of the blocking plate away from the side sealing strip, and the plug mechanisms are matched and connected with the insertion holes.

7. The deep foundation pit plugging device according to claim 6 is characterized in that: The plug mechanism comprises an outer plug support and an outer plug support fixedly arranged on one side of the blocking plate and parallel to each other, two plugs respectively matching the two sockets are slidably arranged inside the outer plug support and the outer plug support, a pull plate is fixedly arranged on the plug between the outer plug support and the outer plug support, a spring is sleeved on the outer side of the plug between the pull plate and the inner plug support, one end of the plug cooperates with the socket, and a limit plate is fixedly arranged on the other end of the plug.

8. The deep foundation pit plugging device according to claim 1 is characterized in that: The bottom end of the vertical frame is hinged to the end of the slide, and an end of the vertical frame away from the slide and an end of the slide away from the vertical frame are provided with diagonal bracing components with adjustable lengths.

9. The deep foundation pit plugging device according to claim 8, characterized in that: The diagonal brace assembly comprises a lower hinge seat hinged to one end of the slide, a fixed diagonal brace rod is arranged on the lower hinge seat, a rotating tube is rotatably arranged on the end of the fixed diagonal brace rod away from the lower hinge seat, a diagonal brace screw is internally threadedly connected to the end of the rotating tube away from the fixed diagonal brace rod, an upper hinge seat is fixedly arranged on the end of the diagonal brace screw away from the rotating tube, and the upper hinge seat is hinged to the top end of the vertical frame.

10. The deep foundation pit plugging device according to claim 1, characterized in that: The horizontal adjustment mechanism comprises a crossbeam fixedly arranged on the top of the base frame and parallel to the short side of the slide, a horizontal screw rod is vertically threadedly connected to the middle of the crossbeam, an end of the horizontal screw rod is rotatably connected to the end of the slide, an adjustment handle is arranged on the end of the horizontal screw rod away from the slide, two horizontal guide rods parallel to the horizontal screw rod are symmetrically arranged at the end of the slide, and the horizontal guide rods are slidably connected to the crossbeam; Fixed plates are evenly and fixedly arranged around the base frame, sliding grooves are fixedly arranged on both sides of the top of the base frame, and the sliding frame is slidably arranged inside the sliding grooves.

Images