A construction device for hospital wall

Abstract

This invention relates to the field of building construction technology, specifically providing a construction device for hospital walls. The device includes a cylindrical body with a conical end face and multiple grinding teeth on the conical surface. A cutting assembly is installed inside the cylindrical body. By incorporating the cutting assembly and the grinding teeth on the conical surface of the cylindrical body, both hole enlargement and cutting operations can be completed by a single device, avoiding the need for repeated tool changes and cumbersome operations, thus greatly improving work efficiency. Furthermore, different operations can be switched using a first limiting assembly and a second limiting assembly, making the operation process simpler and improving the efficiency of processing screw holes.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a construction device for a hospital wall. Background Art

[0002] When constructing hospital walls, especially concrete walls, formwork and water-stop screws are key components. The formwork is used to support and fix concrete, and bear the lateral pressure of concrete during the pouring process to ensure that the wall is formed according to the design requirements. The water-stop screw not only plays the role of fixing the formwork, but also is used in underground structures to resist groundwater pressure and prevent water from seeping into the wall along the screw. After the concrete pouring is completed, the formwork needs to be removed, and the exposed part of the water-stop screw needs to be cut and processed. Finally, the water-stop screw hole is filled with waterproof material to seal the water-stop screw hole.

[0003] However, before using waterproof materials for sealing, the screw holes need to be processed. First, the water stop screws need to be cut off, and the screw holes need to be enlarged and painted. Finally, waterproof materials are used for sealing. This series of operations requires many tools, is cumbersome, and has low efficiency. Summary of the invention

[0004] Based on this, it is necessary to provide a hospital wall construction device to address the problem that many tools are required to seal the screw holes after the wall is prepared, which is inefficient.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A construction device for a hospital wall, comprising:

[0007] A cylinder, one end face of which is a conical surface, a circular groove is provided at the tip of which, the circular groove can be slidably inserted into one end of the water-stop screw extending out of the wall, a plurality of grinding teeth are provided on the conical surface, the cylinder rotates and moves toward one end close to the wall to enlarge the screw hole of the water-stop screw extending out of the wall;

[0008] A rotating handle, wherein the rotating handle is slidably inserted into the side wall of the cylinder, and the end of the rotating handle can be screw-matched with the water-stop screw to drive the cylinder to move along the axial direction of the water-stop screw;

[0009] A cutting assembly, wherein the cutting assembly is capable of cutting the water-stop screw in the circular groove;

[0010] A first limiting assembly and a second limiting assembly, wherein the first limiting assembly is configured to limit the end of the rotating handle from being disengaged from the water-stop screw when the tip of the conical surface of the barrel abuts against the wall, and the rotating handle drives the barrel to move axially along the water-stop screw;

[0011] The second limiting assembly is configured to limit the end of the rotating handle from disengaging from the water-stop screw after the cylinder moves a preset distance axially along the water-stop screw, and the rotating handle rotates in the opposite direction to start the cutting assembly to cut the water-stop screw.

[0012] Furthermore, the first limit assembly includes a limit rod and a first elastic member, the limit rod is slidably inserted in the cylinder and parallel to the axis of the cylinder, one end of the limit rod extends out of the tip of the conical surface of the cylinder, and the first elastic member is sleeved on the limit rod to enable the limit rod to keep one end extending out of the cylinder or have a tendency to extend out of the cylinder, and a first limit hole is provided on the part of the rotating handle located in the cylinder, and when one end of the limit rod is extended into the first limit hole, it can limit the end of the rotating handle from detaching from the water stop screw.

[0013] Furthermore, the first elastic member is a spring.

[0014] Furthermore, the cutting assembly includes symmetrically arranged cutting tools, which include a straight rod and a curved cutter, which are connected in a circular arc. The straight rods of the two cutting tools are inclined and slidably inserted into the rotating handle in an outward-facing "X" shape on the part located in the cylinder body. The curved cutters are respectively located at symmetrical positions on the outer periphery of the water-stop screw. The rotating handle moves axially relative to the cylinder body to push the two curved cutters closer to each other, and the two curved cutters cut the water-stop screw.

[0015] Furthermore, the second limiting assembly includes a limiting nut and a limiting plate, the limiting nut is located on the water stop screw and abuts against the other end face of the cylinder, the limiting plate is arranged in the cylinder, a limiting protrusion is arranged on the limiting plate, a second limiting hole is opened on the part of the rotating handle located in the cylinder, the rotating handle is rotated in the opposite direction to approach the limiting plate, and the limiting protrusion on the limiting plate enters the second limiting hole to limit the rotating handle from being separated from the water stop screw, and a second elastic member is arranged between the limiting plate and the other end face of the cylinder, and the second elastic member pushes the limiting plate.

[0016] Furthermore, the limiting nut includes two semicircular nuts, and the two semicircular nuts are detachably connected.

[0017] Furthermore, the second elastic member is a spring.

[0018] Furthermore, a telescopic component is provided between the grinding tooth and the conical surface of the cylinder, and the telescopic component can adjust the distance between the grinding tooth and the conical surface of the cylinder, and the distance between the grinding tooth and the conical surface of the cylinder is negatively correlated with the hardness of the wall.

[0019] Furthermore, the telescopic assembly includes a connecting rod and a third elastic member. There are multiple connecting rods and they are all fixedly arranged on the conical surface of the cylinder. The axes of the multiple connecting rods are parallel to the axis of the cylinder. A connecting groove is provided on one end of the grinding tooth close to the conical surface of the cylinder. The connecting rod is in the connecting groove, and the third elastic member is sleeved on the connecting rod to press the grinding tooth.

[0020] Furthermore, the third elastic member is a spring.

[0021] The beneficial effects of the present invention are:

[0022] The present invention arranges a cutting assembly and grinding teeth on the conical surface of the barrel so that the reaming operation and the cutting operation are completed by one device, avoiding the problem of repeated tool replacement and cumbersome operation, greatly improving work efficiency, and switching different operations through the first limit assembly and the second limit assembly, thereby making the operation process more concise and the efficiency of processing the screw hole is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a hospital wall construction device provided by an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A front view of a construction device for a hospital wall provided in an embodiment;

[0025] Figure 3 for Figure 2 A cross-sectional view along AA of a construction device for a hospital wall provided in an embodiment;

[0026] Figure 4 for Figure 1 A right side view of a construction device for a hospital wall provided in an embodiment;

[0027] Figure 5 for Figure 4 A cross-sectional view of a construction device for a hospital wall provided in an embodiment along line BB;

[0028] Figure 6 for Figure 5 A partial enlarged view of a construction device X portion of a hospital wall provided in an embodiment;

[0029] Figure 7 A schematic structural diagram of a cutting assembly of a hospital wall construction device provided in one embodiment of the present invention.

[0030] in:

[0031] 100, cylinder; 110, conical surface; 111, circular groove; 120, rectangular groove; 130, grinding teeth; 131, connecting groove; 140, matching hole;

[0032] 200, rotating handle; 210, first limiting hole; 220, second limiting hole; 230, through slot;

[0033] 300, cutting tool; 310, straight rod; 320, curved cutting tool; 321, sliding protrusion; 322, movable groove;

[0034] 400, limiting rod; 410, first elastic member; 420, limiting plate; 421, limiting protrusion; 430, second elastic member; 440, limiting nut; 450, connecting rod; 460, third elastic member;

[0035] 500. Waterstop screw. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] Reference Figure 1-Figure 7 To describe a hospital wall construction device provided by the present invention.

[0040] A construction device for hospital walls, which is suitable for processing a waterstop screw 500 and a screw hole after the preparation of a concrete wall. When preparing concrete, the template needs to be positioned first, and the waterstop screw 500 is used at this time. A waterstop plate is arranged in the middle of the waterstop screw 500, and the waterstop plate can prevent water. The two ends of the waterstop screw 500 are respectively connected to two templates to position the two templates. After positioning, concrete is poured between the two templates. After the concrete solidifies, the template is removed. At this time, both ends of the waterstop screw 500 protrude from the wall, and the protruding waterstop screw 500 needs to be cut off, and the hole is expanded at the position where the waterstop screw 500 is cut off, and the waterproof material is filled after the hole expansion is completed. The present invention is suitable for processing screw holes. A construction device for hospital walls includes a barrel 100, one end face of the barrel 100 is a conical surface 110, and the other end face is a plane. A circular groove 111 is provided on the tip of the conical surface 110 of the barrel 100, and the circular groove 111 can be slidably inserted into the water-stop screw 500, so that the barrel 100 can slide on the water-stop screw 500. A plurality of grinding teeth 130 are provided on the conical surface 110 of the barrel 100, and the grinding teeth 130 are used for expanding the hole. Since the grinding teeth 130 are located on the conical surface 110, the barrel 100 can expand the screw hole on the wall when it rotates and moves toward the wall, thereby increasing the aperture of the screw hole, which is convenient for filling with waterproof material.

[0041] A rotating handle 200 is provided on the cylinder 100, and the rotating handle 200 is slidably inserted on the side wall of the cylinder 100. The rotating handle 200 can move radially along the cylinder 100. A spiral groove (not shown in the figure) is provided on the end of the rotating handle 200. The end of the rotating handle 200 contacts the outer periphery of the water-stop screw 500 and then spirally engages. If the rotating handle 200 does not separate from the water-stop screw 500, the rotating handle 200 can drive the cylinder 100 to rotate synchronously when it rotates, and can also drive the cylinder 100 to move axially along the water-stop screw 500. Therefore, the hole expansion operation of the screw hole can be completed by driving the rotating handle 200 to rotate without separating from the water-stop screw 500.

[0042] After the hole is expanded, the water-stop screw 500 needs to be cut off, so a cutting assembly is provided inside the barrel 100, and the cutting assembly is used to cut the redundant water-stop screw 500. After the cutting is completed, the waterproof material can be filled into the screw hole.

[0043] The barrel 100 of the present invention is also provided with a first limit assembly and a second limit assembly, both of which can limit the rotating handle 200 from being separated from the water-stop screw 500, but the limiting time is different. The first limit assembly limits the rotating handle 200 from being separated from the water-stop screw 500 when the barrel 100 is expanding the hole, and the second limit assembly limits the rotating handle 200 from being separated from the water-stop screw 500 after the barrel 100 moves a preset distance (the preset distance refers to the distance that the barrel 100 needs to move to complete the hole expansion), that is, after the hole expansion is completed, when the cutting assembly is needed to cut the excess water-stop screw 500, and the rotating handle 200 rotates in the opposite direction to start the cutting assembly to cut the water-stop screw 500.

[0044] The present invention arranges a cutting assembly and grinding teeth 130 on the conical surface 110 of the barrel 100, so that the reaming operation and the cutting operation are completed by one device, avoiding the problem of repeated tool replacement and cumbersome operation, greatly improving work efficiency, and switching different operations through the first limit assembly and the second limit assembly, thereby making the operation process more concise and the efficiency of processing the screw hole is higher.

[0045] Specifically, the first limiting assembly in the embodiment of the present invention includes a limiting rod 400 and a first elastic member 410. The limiting rod 400 is slidably inserted in the cylinder 100, and the axis of the limiting rod 400 is parallel to the axis of the cylinder 100. One end of the limiting rod 400 extends out of the cylinder 100 and extends out of the tip of the conical surface 110. The other end of the limiting rod 400 abuts against the portion of the rotating handle 200 located in the cylinder 100. The portion of the rotating handle 200 located in the cylinder 100 is provided with a first limiting hole 210. When the end of the rotating handle 200 is spirally matched with the water-stop screw 500, the first limiting hole 210 is located on the axis of the limiting rod 400. At this time, when the limiting rod 400 is inserted into the first limiting hole 210, it can The rotating handle 200 is restricted from sliding radially along the cylinder 100, so that the end of the rotating handle 200 is always spirally engaged with the water-stop screw 500, and the first elastic member 410 is sleeved on the limiting rod 400. To facilitate the connection of the limiting rod 400, a matching hole 140 is opened inside the conical surface 110 of the cylinder 100. There is a part with a larger diameter in the matching hole 140, and the first elastic member 410 is located in this part. One end of the first elastic member 410 is fixedly connected to the part with a larger diameter of the matching hole 140, and the other end of the first elastic member 410 is fixedly connected to the limiting rod 400. The first elastic member 410 is used to maintain the initial position of the limiting rod 400 or make the limiting rod 400 have a tendency to restore the initial position.

[0046] When the limiting rod 400 is in the initial position, Figure 3As shown in the figure, the right end of the limiting rod 400 extends out of the tip of the conical surface 110 of the barrel 100. At this time, the first elastic member 410 is in the original length state. When the conical surface 110 of the barrel 100 abuts against the wall, the operator squeezes the rotating handle 200 to move radially inward along the barrel 100 so that the end of the rotating handle 200 is screwed with the water stop screw 500 to push the conical surface 110 of the barrel 100 to abut against the wall. The limiting rod 400 is subjected to thrust to compress the first elastic member 410. The left end of the limiting rod 400 is inserted into the first limiting hole 210. The limiting rod 400 limits the radial movement of the rotating handle 200 along the barrel 100. At this time, the operator no longer needs to squeeze the rotating handle 200. The rotating handle 200 can be driven to rotate so that the barrel 100 can rotate around its own axis and slowly move toward the wall to start the hole expansion operation. The grinding teeth 130 on the conical surface 110 of the barrel 100 grind the wall to expand the screw hole.

[0047] More specifically, the cutting assembly of the embodiment of the present invention includes two symmetrically arranged cutting tools 300, each of which includes a straight rod 310 and a curved cutting tool 320, and the straight rod 310 and the curved cutting tool 320 are connected in an arc. Figure 7 As shown, the curved cutter 320 has a sharp tip at one end away from the connection position, and the two symmetrically arranged cutting tools 300 are respectively located at symmetrical positions on the outer periphery of the water-stop screw 500. When the two cutting tools 300 approach each other, the two cutting tools 300 gradually approach the water-stop screw 500 and gradually cut off the water-stop screw 500. The straight rods 310 of the two cutting tools 300 are respectively tilted on the part of the rotating handle 200 located in the barrel 100, and the two straight rods 310 are in an outward eight-shaped shape, and the two straight rods 310 are slidably plugged into the rotating handle 200.

[0048] For the convenience of connection, the rotating handle 200 is provided with two through grooves 230 in an outward-splayed shape on the part of the cylinder 100, and the two straight rods 310 are slidably arranged in the through grooves 230. The two straight rods 310 are provided with blocking pieces at the positions away from the connection with the curved cutter 320 to prevent the straight rods 310 from being separated from the through grooves 230, and the side of the curved cutter 320 is provided with a sliding protrusion 321. The cylinder 100 is provided with a sliding groove (not shown in the figure), which is perpendicular to the axis of the cylinder 100, and the sliding protrusion 321 on the curved cutter 320 is provided with a sliding groove. 1 is located in the sliding groove, so that the curved cutter 320 can only slide in the sliding groove along the extension direction of the sliding groove, that is, the curved cutter 320 can only move closer to or farther from each other but cannot move axially relative to the barrel 100. When the rotating handle 200 moves axially relative to the barrel 100, the rotating handle 200 cannot pull the cutting tool 300 to move axially along the barrel 100 as a whole. At this time, the two through grooves 230 in an outward eight-shaped shape make the two symmetrically arranged cutting tools 300 approach each other to cut the water stop screw 500. Figure 3 As shown, when the handle 200 is rotated to move to the left relative to the barrel 100, the two cutting tools 300 approach each other to cut the screw.

[0049] Specifically, how to realize the above-mentioned movement of the rotating handle 200 to the left relative to the barrel 100, the present embodiment adopts a reverse driving method for the rotating handle 200, so that the rotating handle 200 moves to the left relative to the barrel 100. It should be noted that when the rotating handle 200 in the present embodiment is slidably inserted into the barrel 100, the rotating handle 200 is relatively stationary in the circumferential direction of the barrel 100, but has space to move in the axial direction. Specifically, a rectangular groove 120 is provided on the barrel 100. The length of the rectangular groove 120 is relatively long, and the length direction is the same as the axial direction of the barrel 100, and the width of the rectangular groove 120 is just suitable for the rotating handle 200. When the handle 200 is rotated in the reverse direction, it is only necessary to fix the position of the barrel 100, so that the rotating handle 200 moves to the left relative to the barrel 100, thereby realizing the above-mentioned function.

[0050] It should be noted that a movable groove 322 is provided on the curved cutter 320 of the cutting tool 300. The function of the movable groove 322 is to allow the limit rod 400 of the first limit assembly to pass through, and the size of the movable groove 322 is relatively large, so that after the cutting tool 300 cuts off the water stop screw 500, it still does not affect the limit rod 400 to limit the end of the rotating handle 200 from being spirally matched with the water stop screw 500.

[0051] In a further embodiment, the second limiting assembly can fix the position of the barrel 100 on the water-stop screw 500, and at the same time, the second limiting assembly also limits the end of the rotating handle 200 from being separated from the water-stop screw 500. The second limiting assembly includes a limiting nut 440 and a limiting plate 420. When the screw hole is expanded and the water-stop screw 500 needs to be cut off, the limiting nut 440 is connected to the water-stop screw 500 and the limiting nut 440 abuts against the other end of the barrel 100 (the end of the barrel 100 away from the conical surface 110). At this time, the barrel 100 cannot move on the water-stop screw 500, and the water-stop screw 500 is fixed to the wall, so the position of the barrel 100 remains unchanged. The limit plate 420 is arranged inside the cylinder 100, and the limit protrusions 421 are respectively arranged on both ends of the limit plate 420. At the same time, a second limit hole 220 is also opened on the part of the rotating handle 200 located inside the cylinder 100. When the end of the rotating handle 200 is screwed with the water stop screw 500, the second limit hole 220 and the limit protrusion 421 are just in the same straight line. At this time, the limit rod 400 of the first limit assembly can also limit the rotation of the handle 200 and the water stop screw 500 has the function of disengaging from the spiral fit. As the rotating handle 200 rotates in the opposite direction, the first limiting hole 210 on the rotating handle 200 gradually disengages from the limiting rod 400, and the second limiting hole 220 gradually approaches the limiting protrusion 421. When the first limiting hole 210 disengages from the limiting rod 400, the second limiting hole 220 has been engaged with the limiting protrusion 421, so that the second limiting component plays the function of limiting the rotating handle 200 and the water-stop screw 500 from disengaging from the spiral fit.

[0052] It should be noted that the limit plate 420 in the embodiment of the present invention can move in the cylinder 100 along the axial direction of the cylinder 100 to prevent the limit plate 420 from blocking the axial movement of the rotating handle 200 relative to the cylinder 100. Figure 5 As shown, a space is provided in the cylinder 100 to allow the limiting plate 420 to move axially along the cylinder 100 .

[0053] Specifically, a second elastic member 430 is provided between the limit plate 420 and the other end of the cylinder 100 (the end of the cylinder 100 away from the conical surface 110). The second elasticity makes the movement of the limit plate 420 smoother, and at the same time enables the rotating handle 200 to push the limit plate 420 to reset when it is not rotated in the reverse direction, and the limit plate 420 pushes the rotating handle 200 to reset.

[0054] It can be understood that the limit plate 420 and the second elastic member 430 in the present invention may not be limited to the specific limitations in the above-mentioned embodiments. For example, the limit plate 420 can be fixed to the other end of the cylinder 100, and the length of the limit protrusion 421 on the limit plate 420 is increased, and the second elastic member 430 is sleeved on the limit protrusion 421. When the limit protrusion 421 is inserted into the second limit hole 220, the second elastic member 430 abuts against the rotating handle 200. When the rotating handle 200 is not rotated in the opposite direction, the second elastic member 430 can also push the rotating handle 200 to reset. At the same time, the limit protrusion 421 on the limit plate 420 can also limit the end of the rotating handle 200 from being spirally matched with the water-stop screw 500.

[0055] In a further embodiment, the limit nut 440 of the present invention includes two semicircular nuts, which are detachably connected. When in use, only the two semicircular nuts need to be installed at the specified position, thereby reducing the time required to rotate from the end of the water-stop screw 500 to the specified position when it is a complete nut, thereby further improving the working efficiency of the device. After use, the two semicircular nuts can be disassembled.

[0056] In a further embodiment, a telescopic component is provided between the grinding tooth 130 and the conical surface 110 of the cylinder 100, and the telescopic component allows a distance between the grinding tooth 130 and the conical surface 110 of the cylinder 100, so that the grinding tooth 130 can have space for axial movement on the conical surface 110 of the cylinder 100 during hole expansion.

[0057] The advantage of doing this is that the grinding teeth 130 expand the hole more slowly when encountering a harder wall, while the barrel 100 keeps moving on the water-stop screw 500, so that the grinding teeth 130 have space to retreat, avoiding major damage to the grinding teeth 130, thereby extending the service life of the grinding teeth 130. If a softer wall is encountered, it will not have a great impact, that is, the distance between the grinding teeth 130 and the conical surface 110 of the barrel 100 is negatively correlated with the hardness of the wall. The greater the hardness of the wall, the smaller the distance between the grinding teeth 130 and the conical surface 110 of the barrel 100; the smaller the hardness of the wall, the larger the distance between the grinding teeth 130 and the conical surface 110 of the barrel 100.

[0058] Specifically, the telescopic assembly includes a connecting rod 450 and a third elastic member 460. There are multiple connecting rods 450, and the number of connecting rods 450 is the same as the number of grinding teeth 130. The multiple connecting rods 450 are fixedly arranged on the conical surface 110 of the cylinder 100, and the axes of the multiple connecting rods 450 are parallel to the axis of the cylinder 100. Figure 5 and Figure 6As shown, a connecting groove 131 is provided on one end of the grinding tooth 130 close to the conical surface 110 of the barrel 100, and the connecting groove 131 is adapted to the shape of the connecting rod 450, so that the grinding tooth 130 can only move axially relative to the barrel 100, preventing the grinding tooth 130 from moving in other directions. The connecting rod 450 is slidably set in the connecting groove 131. In order to prevent the connecting rod 450 and the connecting groove 131 from detaching, a stopper is set on the end of the connecting rod 450, and a stopper is also set on the edge of the connecting groove 131. The third elastic member 460 is sleeved on the connecting rod 450, one end of the third elastic member 460 abuts on the stopper of the connecting rod 450, and the other end of the third elastic member 460 abuts on the stopper of the connecting rod 450, and the third elastic member 460 abuts on the stopper of the connecting groove 131. The third elastic member 460 is in a compressed state and thus pushes the grinding tooth 130. When the grinding tooth 130 encounters a wall with greater hardness, the third elastic member 460 will be further compressed so that the grinding tooth 130 can retreat, thereby avoiding major damage to the grinding tooth 130 and improving the service life of the grinding tooth 130.

[0059] In a further embodiment, the first elastic member 410, the second elastic member 430 and the third elastic member 460 in the present invention are all springs, and the difference lies in the size and stiffness coefficient of the springs. It should be noted that since the springs of the first elastic member 410 and the second elastic member 430 are for resetting function, the spring stiffness coefficients of the first elastic member 410 and the second elastic member 430 are relatively small, while the spring of the third elastic member 460 requires a larger elastic force so that it can adapt to the hardness of the wall, and therefore the spring stiffness coefficient of the third elastic member 460 is relatively large.

[0060] The specific working process of a hospital wall construction device provided by the present invention is described in combination with the above embodiments:

[0061] Hole expansion:

[0062] The barrel 100 is placed on the water-stop screw 500 that needs to be processed. The water-stop screw 500 penetrates the barrel 100 from the circular groove 111 on the conical surface 110 of the barrel 100. The operator pushes the barrel 100 to the position of the screw hole, first pushes the rotating handle 200 to move radially inward along the barrel 100 so that the end of the rotating handle 200 is spirally matched with the water-stop screw 500, and then pushes the conical surface 110 of the barrel 100 to abut against the wall. The limiting rod 400 extending from the tip of the conical surface 110 is pushed by the wall and moves away from the wall along the axial direction of the barrel 100. At this time, the rotating handle 200 is pushed inward along the radial direction of the barrel 100. The first limit hole 210 on the part of the movable handle 200 located inside the cylinder 100 is in the same straight line as the limit rod 400. The limit rod 400 is inserted into the first limit hole 210 to limit the end of the rotating handle 200 from being spirally engaged with the water-stop screw 500. The operator can stop applying force to the rotating handle 200 to move radially inward along the cylinder 100. The operator drives the rotating handle 200 to rotate so that the cylinder 100 moves along the water-stop screw 500 toward the wall. At the same time, the grinding teeth 130 on the conical surface 110 of the cylinder 100 expand the hole in the wall.

[0063] Cutting:

[0064] After the hole is expanded, the barrel 100 moves to the specified position on the water stop screw 500 (the specified position refers to the position after the hole is expanded), and then stops. The limiting nut 440 of the second limiting assembly is fixed on the water stop screw 500, so that the limiting nut 440 abuts against the end of the barrel 100 away from the conical surface 110. The conical surface 110 of the barrel 100 is located in the expanded hole, and the other end of the barrel 100 is abutted by the limiting nut 440. At this time, the barrel 100 is fixed on the water stop screw 500, and the handle 200 is driven in the reverse direction. The first limiting nut 440 on the part of the handle 200 inside the barrel 100 The positioning hole 210 gradually disengages from the limiting rod 400, while the second limiting hole 220 gradually approaches the limiting protrusion 421 on the limiting plate 420. As the rotating handle 200 rotates in the opposite direction, the second limiting hole 220 cooperates with the limiting protrusion 421, and the end of the rotating handle 200 is limited by the limiting plate 420, thereby preventing the end of the rotating handle 200 from being disengaged from the spiral cooperation with the water-stop screw 500. The rotating handle 200 moves along the water-stop screw 500 away from the wall, and the two cutting tools 300 gradually approach each other under the action of the two outward-facing eight-shaped through grooves 230, thereby gradually cutting off the water-stop screw 500.

[0065] Fill:

[0066] After the water-stop screw 500 is cut off, the water-stop screw 500 on the wall is waterproofed, and then the expanded screw hole is filled with waterproof material to seal the screw hole, thereby completing the preparation of the wall.

[0067] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-described embodiments only express several 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 present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A construction device for hospital walls, characterized in that: include: A cylinder, one end face of which is a conical surface, a circular groove is provided at the tip of which, the circular groove can be slidably inserted into one end of the water-stop screw extending out of the wall, a plurality of grinding teeth are provided on the conical surface, the cylinder rotates and moves toward one end close to the wall to enlarge the screw hole of the water-stop screw extending out of the wall; A rotating handle, wherein the rotating handle is slidably inserted into the side wall of the cylinder, and the end of the rotating handle can be screw-matched with the water-stop screw to drive the cylinder to move along the axial direction of the water-stop screw; A cutting assembly, wherein the cutting assembly is capable of cutting the water-stop screw in the circular groove; A first limiting assembly and a second limiting assembly, wherein the first limiting assembly is configured to limit the end of the rotating handle from being disengaged from the water-stop screw when the tip of the conical surface of the barrel abuts against the wall, and the rotating handle drives the barrel to move axially along the water-stop screw; The second limiting assembly is configured to limit the end of the rotating handle from being disengaged from the water-stop screw after the barrel moves a preset distance along the axial direction of the water-stop screw, and the rotating handle rotates in the opposite direction to start the cutting assembly to cut the water-stop screw; The first limit assembly includes a limit rod and a first elastic member, the limit rod is slidably inserted in the cylinder and is parallel to the axis of the cylinder, one end of the limit rod extends out of the conical surface tip of the cylinder, the first elastic member is sleeved on the limit rod to enable the limit rod to keep one end extending out of the cylinder or have a tendency to extend out of the cylinder, a first limit hole is provided on the part of the rotating handle located in the cylinder, and when one end of the limit rod extends into the first limit hole, the end of the rotating handle can be restricted from being separated from the water stop screw; The cutting assembly comprises symmetrically arranged cutting tools, the cutting tools comprising a straight rod and a curved cutting tool, the two being connected in an arc, the straight rods of the two cutting tools being inclined and slidably inserted in an outward-splayed shape on the rotating handle located in the cylinder, the curved cutting tools being respectively located at symmetrical positions on the outer circumference of the water-stop screw, the rotating handle being axially moved relative to the cylinder to push the two curved cutting tools closer to each other, and the two curved cutting tools cutting the water-stop screw; The second limiting assembly includes a limiting nut and a limiting plate, the limiting nut is located on the water stop screw and abuts against the other end face of the cylinder, the limiting plate is arranged in the cylinder, a limiting protrusion is arranged on the limiting plate, a second limiting hole is opened on the part of the rotating handle located in the cylinder, the rotating handle is rotated in the opposite direction to approach the limiting plate, and the limiting protrusion on the limiting plate can limit the rotating handle from being separated from the water stop screw when entering the second limiting hole, and a second elastic member is arranged between the limiting plate and the other end face of the cylinder, and the second elastic member pushes the limiting plate.

2. The construction device for hospital wall according to claim 1, characterized in that: The first elastic member is a spring.

3. The construction device for hospital wall according to claim 1, characterized in that: The limiting nut comprises two semicircular nuts, and the two semicircular nuts are detachably connected.

4. The construction device for hospital wall according to claim 1, characterized in that: The second elastic member is a spring.

5. The construction device for hospital wall according to claim 1, characterized in that: A telescopic component is provided between the grinding teeth and the conical surface of the cylinder, and the telescopic component can adjust the distance between the grinding teeth and the conical surface of the cylinder. The distance between the grinding teeth and the conical surface of the cylinder is negatively correlated with the hardness of the wall.

6. The construction device for hospital wall according to claim 5, characterized in that: The telescopic assembly includes a connecting rod and a third elastic member. There are multiple connecting rods and they are all fixedly arranged on the conical surface of the cylinder. The axes of the multiple connecting rods are parallel to the axis of the cylinder. A connecting groove is provided on one end of the grinding tooth close to the conical surface of the cylinder. The connecting rod is in the connecting groove. The third elastic member is sleeved on the connecting rod to press the grinding tooth.

7. The construction device for hospital wall according to claim 6, characterized in that: The third elastic member is a spring.

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