Special protection device for anti-floating anchor drilling hole

Abstract

The utility model provides a special protection device for anti-floating anchor rod drilling holes, which comprises a protection cylinder, a support plate and an adjusting rod, the protection cylinder is arranged below the support plate, one end of the adjusting rod extends from the top of the support plate to the bottom to be connected with the protection cylinder, the protection cylinder comprises a plurality of arc-shaped plates and a transmission mechanism, and the transmission mechanism is connected with the arc-shaped plates. The transmission mechanism is installed in the center of the opposite sides of the multiple arc-shaped plates, the transmission mechanism is movably connected with the adjusting rod, the adjusting rod is rotationally installed on the supporting plate, and the transmission mechanism is used for controlling the multiple arc-shaped plates to stretch out and draw back or expand inwards and outwards so as to adapt to different holes for supporting and protecting; meanwhile, the supporting effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a special protection device for the drilling holes of anti-floating anchor rods. Background Technique

[0002] At present, the underground space engineering industry such as subways in our country is in a period of rapid development. Anti-floating engineering of underground buildings mainly uses anti-floating piles or anti-floating anchor rods to resist the buoyancy of groundwater on buildings. And a very large number of anti-floating anchor rods are generally required during the construction of the building floor slab. Usually, they are arranged in a dotted pattern evenly, and the center spacing of each anti-floating anchor rod is very short, usually only about 0.5m - 1m. During the drilling process, the spiral drill rod flushes out the muck through high-pressure air flow, so it is very easy to fall into adjacent holes, causing the accumulation of muck in nearby holes and increasing the workload of secondary hole cleaning. Therefore, how to prevent the muck flushed out by high-pressure air flow during the drilling process from falling into adjacent holes and prevent the sudden instability after hole formation from causing the collapse of the upper hole wall, and reduce the workload of secondary hole cleaning is worthy of our in-depth discussion and research.

[0003] In the prior art, the protection device used for protecting the drilling holes of anti-floating anchor rods is generally fixed, cannot be adjusted, and it is easy to have a gap between the protection device and the inner wall of the hole, and it cannot completely fit and support the inner wall of the hole, so it cannot achieve effective protection, nor can it adapt to holes of different sizes, and the flexibility is low.

[0004] The purpose of the utility model is to provide a special protection device for the drilling holes of anti-floating anchor rods to solve the problems mentioned in the above background technique. Content of the Utility Model

[0005] To achieve the above purpose, the utility model provides a special protection device for the drilling holes of anti-floating anchor rods, including a protection cylinder, a support plate, and an adjusting rod. The protection cylinder is arranged below the support plate. One end of the adjusting rod extends from the top of the support plate to the bottom and is connected to the protection cylinder. The protection cylinder includes a plurality of arc-shaped plates and a transmission mechanism. The transmission mechanism is installed at the center of the opposite side of the plurality of arc-shaped plates. The transmission mechanism is movably connected to the adjusting rod. The adjusting rod is rotatably installed on the support plate. The transmission mechanism is used to control the telescopic or expansion of the plurality of arc-shaped plates in and out.

[0006] As a further improvement of the utility model, the transmission mechanism includes a sleeve and a plurality of connecting rods. The bottom of the adjusting rod is movably connected to the top of the sleeve. The plurality of connecting rods are evenly distributed on the outer wall of the sleeve. The connecting rods are arranged in one-to-one correspondence with each arc-shaped plate. The two ends of the connecting rod are respectively movably connected to the outer wall of the sleeve and the inner wall of the arc-shaped plate.

[0007] As a further improvement of the present invention, the adjusting rod includes a screw rod and a handle, the bottom end of the screw rod passes through the support plate and is fixedly connected to a limit block, the top of the sleeve is provided with a movable cavity for limiting the limit block, the limit block is rotatably installed in the movable cavity, and the top inner wall of the movable cavity limits the limit block to prevent the limit block from leaving the movable cavity, and the handle is fixedly connected to a section of the screw rod extending out of the top of the support plate.

[0008] As a further improvement of the utility model, a limit sleeve is provided in the center of the support plate, the screw rod is threadedly connected to the limit sleeve, the limit sleeve is fixedly connected to the support plate, and the upper and lower ends of the limit sleeve are respectively tightly fixed to the upper and lower end surfaces of the support plate.

[0009] As a further improvement of the present invention, a plurality of fixing plates 1 are evenly distributed on the outer wall of the sleeve, each fixing plate 1 is symmetrically distributed with the connecting rod up and down, a fixing plate 2 is fixedly installed on the outer wall of the arc plate on the opposite side of the fixing plate 1, the fixing plate 1 and the fixing plate 2 are parallel to each other, the two ends of the connecting rod are respectively movably connected to the fixing plate 1 and the fixing plate 2, and the connecting rod is inclined.

[0010] As a further improvement of the utility model, a positioning block is further provided at the top center of the arc plate, and a plurality of positioning slide rails are provided on the bottom surface of the support plate. The positioning slide rails correspond to the center of each arc plate, and the positioning block is slidably installed in the positioning slide rails.

[0011] As a further improvement of the present invention, the length and width of the support plate are both greater than the diameter of the protective tube when it is unfolded or closed, and the length and width of the support plate are both greater than the diameter of the hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model makes the protective cylinder telescopic. The protective cylinder is inserted into the hole, and the support plate is supported on the top surface around the top of the hole. Then, by grasping the handle and rotating the screw rod, the screw rod moves upward. When the screw rod moves, the sleeve follows. The multiple connecting rods connected to the outer wall of the sleeve unfold outward, thereby pushing the arc plate towards the inner wall of the hole, further supporting and protecting the inner wall of the hole to prevent the hole from collapsing. By setting a limiting sleeve at the center of the support plate, the screw rod can move up and down along the center of the support plate through the thread in the limiting sleeve when rotating. When the screw rod rotates, the limiting block provided at the bottom of the screw rod rotates in the movable cavity at the top of the sleeve. Since the top wall of the movable cavity limits the limiting block, it can prevent the limiting block from detaching from the movable cavity when the screw rod rotates. With the cooperation of the movable cavity and the limiting block, when the screw rod moves up and down, the sleeve will follow and move together, thereby facilitating the control of the opening and closing of the multiple arc plates on the protective cylinder, and further enabling the adjustment of the arc plates according to the size of the hole, being applicable to holes of different sizes. At the same time, when adjusting the arc plates, it is beneficial to precisely fit the arc plates with the inner wall of the hole, improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 For the utility model Figure 1 is the bottom view;

[0016] Figure 3 is the structural schematic diagram of the protective cylinder of the utility model;

[0017] Figure 4 is the unfolded structural schematic diagram of the protective cylinder of the utility model;

[0018] Figure 5 is the internal structural schematic diagram of the connection between the support plate and the protective cylinder of the utility model;

[0019] Figure 6 is the separation diagram of the screw rod and the sleeve of the utility model.

[0020] In the figure: 1. Protective cylinder; 101. Arc plate; 102. Screw rod; 103. Handle; 104. Sleeve; 105. Connecting rod; 106. First fixing plate; 107. Positioning block; 108. Second fixing plate; 109. Movable cavity; 110. Limiting block;

[0021] 2. Support plate; 201. Limiting sleeve; 202. Positioning slide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings. Example 1

[0025] See also Figures 1-6 The utility model provides a special protective device for anti-floating anchor rod drilling holes, including a protective tube 1, a support plate 2, and an adjusting rod. The protective tube 1 is arranged below the support plate 2, and one end of the adjusting rod extends from the top of the support plate 2 to the bottom and is connected to the protective tube 1. The protective tube 1 includes a plurality of arc plates 101 and a transmission mechanism. The transmission mechanism is installed at the center of the opposite side of the plurality of arc plates 101. The transmission mechanism is movably connected to the adjusting rod, and the adjusting rod is rotatably installed on the support plate 2. The transmission mechanism is used to control the plurality of arc plates 101 to retract or unfold inward and outward.

[0026] The transmission mechanism includes a sleeve 104 and multiple connecting rods 105. The bottom of the adjusting rod is movably connected to the top of the sleeve 104. The multiple connecting rods 105 are evenly distributed on the outer wall of the sleeve 104. The connecting rods 105 are arranged one by one corresponding to each of the arc plates 101. The two ends of the connecting rods 105 are respectively movably connected to the outer wall of the sleeve 104 and the inner wall of the arc plate 101.

[0027] The adjusting rod includes a screw rod 102 and a handle 103. The bottom end of the screw rod 102 passes through the support plate 2 and is fixedly connected to a limit block 110. The top of the sleeve 104 is provided with an active cavity 109 for limiting the limit block 110. The limit block 110 is rotatably installed in the active cavity 109, and the top inner wall of the active cavity 109 limits the limit block 110 to prevent the limit block 110 from leaving the active cavity 109. The handle 103 is fixedly connected to one end of the screw rod 102 extending from the top of the support plate 2.

[0028] A limiting sleeve 201 is provided at the center of the support plate 2. The lead screw 102 is threadedly connected to the limiting sleeve 201. The limiting sleeve 201 is fixedly connected to the support plate 2. The upper and lower ends of the limiting sleeve 201 are respectively tightly abutted and fixed to the upper and lower end faces of the support plate 2.

[0029] During use, the protective cylinder 1 is inserted into the hole. The support plate 2 is supported on the top surface around the top of the hole. Then, by grasping the handle 103 and rotating the lead screw 102, the lead screw 102 moves upward. When the lead screw 102 moves, the sleeve 104 is driven to move along with it. A plurality of connecting rods 105 connected to the outer wall of the sleeve 104 expand outwards, thereby pushing the arc plate 101 towards the inner wall of the hole, and then supporting and protecting the inner wall of the hole to prevent the hole from collapsing. In this embodiment, by providing the limiting sleeve 201 at the center of the support plate 2, the lead screw 102 can move up and down along the center of the support plate 2 through the thread in the limiting sleeve 201 when rotating. When the lead screw 102 rotates, the limiting block 110 provided at the bottom of the lead screw 102 rotates in the movable cavity 109 at the top of the sleeve 104. Since the top wall of the movable cavity 109 limits the limiting block 110, it can be avoided that the limiting block 110 disengages from the movable cavity 109 when the lead screw 102 rotates. With the cooperation of the movable cavity 109 and the limiting block 110, when the lead screw 102 moves up and down, the sleeve 104 will be driven to move along with it, so as to facilitate controlling the opening and closing of the plurality of arc plates 101 on the protective cylinder 1, and then the arc plates 101 can be adjusted according to the size of the hole, which is applicable to holes of different sizes. At the same time, when adjusting the arc plates 101, it is beneficial to precisely fit the arc plates 101 with the inner wall of the hole, improving the protection effect. Embodiment 2

[0030] Please refer to Figure 1 、 Figure 2 、 Figure 4 A plurality of first fixing plates 106 are evenly distributed on the outer wall of the sleeve 104. The connecting rods 105 are symmetrically distributed above and below each first fixing plate 106. A second fixing plate 108 is fixedly installed on the outer wall of the arc plate 101 on the side opposite to the first fixing plate 106. The first fixing plate 106 and the second fixing plate 108 are parallel to each other. The two ends of the connecting rod 105 are respectively movably connected to the first fixing plate 106 and the second fixing plate 108. The connecting rod 105 is inclined.

[0031] A positioning block 107 is further provided at the center of the top of the arc plate 101. A plurality of positioning slide rails 202 are provided on the bottom surface of the support plate 2. The positioning slide rails 202 correspond to the center of each arc plate 101. The positioning block 107 is slidably installed in the positioning slide rails 202.

[0032] The length and width of the support plate 2 are both greater than the diameter of the protective tube 1 when it is unfolded or closed, and the length and width of the support plate 2 are both greater than the diameter of the hole.

[0033] During use, when the handle 103 is turned to move the screw rod 102 upward, the sleeve connected to the screw rod 102 moves upward accordingly, and the multiple connecting rods 105 connected to the outer wall of the sleeve expand outward around the axis on the fixed plate 106. At this time, the positioning block 107 at the top of the arc plate 101 slides in the positioning slide rail 202 at the bottom of the support plate 2, so that the multiple arc plates 101 expand toward the periphery at the same time, fit and support the inner wall of the hole, improve the fit of the arc plate 101 to the inner wall of the hole, thereby enhancing the supporting force of the arc plate 101 on the hole, and effectively avoiding the collapse of the hole. In this embodiment, the length and width of the support plate 2 are both set to be larger than the diameter of the protective tube 1 when expanded or contracted, so as to facilitate the support of the protective tube 1. The positioning block 107 and the positioning slide rail 202 can play a role of directional movement when the multiple arc plates 101 move, so that the arc plate 101 is more stable when expanded.

[0034] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A special protective device for anti-floating anchor drilling holes, characterized in that: It includes a protective tube, a support plate, and an adjusting rod. The protective tube is arranged below the support plate. One end of the adjusting rod extends from the top of the support plate to the bottom and is connected to the protective tube. The protective tube includes multiple arc plates and a transmission mechanism. The transmission mechanism is installed at the center of the opposite side of the multiple arc plates. The transmission mechanism is movably connected to the adjusting rod. The adjusting rod is rotatably installed on the support plate. The transmission mechanism is used to control the multiple arc plates to retract or unfold inward and outward.

2. The anti-floating anchor rod drilling hole protection device according to claim 1 is characterized by: The transmission mechanism includes a sleeve and multiple connecting rods. The bottom of the adjusting rod is movably connected to the top of the sleeve. The multiple connecting rods are evenly distributed on the outer wall of the sleeve. The connecting rods are arranged one by one corresponding to each of the arc plates. The two ends of the connecting rods are respectively movably connected to the outer wall of the sleeve and the inner wall of the arc plate.

3. The anti-floating anchor rod drilling hole protection device according to claim 2 is characterized by: The adjusting rod includes a screw rod and a handle, the bottom end of the screw rod passes through the support plate and is fixedly connected to a limit block, the top of the sleeve is provided with a movable cavity for limiting the limit block, the limit block is rotatably installed in the movable cavity, and the top inner wall of the movable cavity limits the limit block to prevent the limit block from leaving the movable cavity, and the handle is fixedly connected to one end of the screw rod extending out of the top of the support plate.

4. The anti-floating anchor rod drilling hole protection device according to claim 3 is characterized by: A limiting sleeve is provided at the center of the support plate, the screw rod is threadedly connected to the limiting sleeve, the limiting sleeve is fixedly connected to the support plate, and the upper and lower ends of the limiting sleeve are respectively tightly fixed to the upper and lower end surfaces of the support plate.

5. The anti-floating anchor rod drilling hole protection device according to claim 2 is characterized in that: The outer wall of the sleeve is evenly distributed with multiple fixing plates 1, and each fixing plate 1 is symmetrically distributed with the connecting rod up and down. A fixing plate 2 is fixedly installed on the outer wall of the arc plate on the opposite side of the fixing plate 1, and the fixing plate 1 and the fixing plate 2 are parallel to each other. The two ends of the connecting rod are respectively movably connected with the fixing plate 1 and the fixing plate 2, and the connecting rod is inclined.

6. The anti-floating anchor rod drilling hole protection device according to claim 5 is characterized by: A positioning block is also provided at the top center of the arc plate, and a plurality of positioning rails are provided at the bottom surface of the support plate. The positioning rails correspond to the center of each arc plate, and the positioning block is slidably installed in the positioning rails.

7. The anti-floating anchor rod drilling hole protection device according to claim 1 is characterized by: The length and width of the support plate are both greater than the diameter of the protective tube when it is unfolded or closed, and the length and width of the support plate are both greater than the diameter of the hole.

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