Concrete preformed hole positioning pin taking-out device

Abstract

The utility model relates to the technical field of taking out preformed holes of various concrete components, in particular to a concrete preformed hole positioning pin taking-out device which comprises a preformed hole positioning pin and a bottom plate, a concrete layer is movably arranged on the outer side of the preformed hole positioning pin, and a stand column is fixedly installed at the lower end of the bottom plate. A positioning pin knocking and taking-out structure is arranged above the bottom plate, a preformed hole positioning pin reinforcing and connecting structure is arranged on the inner side of the preformed hole positioning pin, and the top end of the bottom plate and the lower portion of the preformed hole positioning pin are oppositely arranged. According to the concrete preformed hole positioning pin taking-out device, lubricating oil can be added into a lubricating cavity, so that the sliding smoothness of a heavy hammer is facilitated, a buffer pad is made of a high-toughness pressure-resistant and smashing-resistant rubber material, and the buffer pad can reduce noise and reduce vibration and numbness of human hands at the same time; and by means of the structure that vibration is reduced through the buffer pad and the lubricating cavity is filled with lubricating oil, the using effect of the concrete preformed hole positioning pin taking-out device is directly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of removing pre-reserved holes of various concrete components, in particular to a device for removing positioning pins of pre-reserved holes in concrete. Background Art

[0002] A locating pin is a part used to limit the freedom of an object. It is widely used in mechanical motion equipment, especially in machine tool fixtures as a common positioning part. Its main function is to determine the position of an object in two-dimensional space. It achieves positioning and connection through geometric matching to ensure the relative position stability between the connecting parts. The locating pins installed in the reserved holes in concrete need to be removed using a specific removal device.

[0003] For example, the publication number "CN207044090U" is named a positioning pin quick removal device. Although it has a simple structure and can quickly and safely remove the positioning pins from precision equipment, it greatly shortens the maintenance time of the equipment and improves the maintenance efficiency. However, the existing positioning pin quick removal device is used to remove the positioning pins on precision equipment. However, positioning pins are also installed in some concrete reserved holes in the construction industry. After the precast concrete is formed, the reserved hole pins are very difficult to remove due to the expansion of the concrete. Hitting with a hammer can easily damage the edge of the concrete reserved hole, and the positioning pins firmly fixed in the concrete reserved hole require a lot of force to knock down. The vibration and inertia generated by the hammer may act on the operator's hand, which not only easily causes numbness of the operator's arm, but also easily injures the fingers if used improperly, thus affecting the use effect of the positioning pin quick removal device.

[0004] At the same time, the existing positioning pin quick removal device uses a handle directly welded on the outside of the heavy hammer to facilitate the user to slide the heavy hammer to knock down the positioning pin. However, the welded handle can only be fixed on the outside of the heavy hammer and cannot be adjusted according to actual needs. Because the distance between the handle and the heavy hammer is relatively close, the force arm between the handle and the heavy hammer is also relatively short. Therefore, when the heavy hammer uses inertia to knock the positioning pin out, it is completely necessary to rely on the arm strength of the operator's arm to drive it. Therefore, it consumes physical strength and endurance during use, resulting in low efficiency of the positioning pin quick removal device. Utility Model Content

[0005] The utility model aims to solve the problems of poor use effect and low use efficiency of a locating pin quick removal device, and proposes a concrete reserved hole locating pin removal device.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A device for removing locating pins of reserved holes in concrete is designed, comprising a locating pin of reserved holes and a base plate, wherein a concrete layer is movably provided on the outer side of the locating pin of reserved holes, a column is fixedly installed on the lower end of the base plate, a locating pin knocking and removing structure is provided above the base plate, a locating pin reinforcing connection structure is provided on the inner side of the locating pin of reserved holes, and the top end of the base plate is arranged opposite to the bottom of the locating pin of reserved holes.

[0008] Preferably, the positioning pin knocking and removal structure includes a sliding rod and a heavy hammer, the sliding rod is fixedly installed above the base plate, the heavy hammer is slidably sleeved on the sliding rod, a lubrication cavity is fixedly opened on the inner side of the heavy hammer, the inner side of the lubrication cavity is slidingly connected to the outer wall of the sliding rod, the bottom end of the sliding rod is fixedly connected to a buffer pad, and the top of the buffer pad is movably connected to the lower end of the heavy hammer.

[0009] Preferably, a detachable striking handle structure is provided on the outer side of the heavy hammer, and the detachable striking handle structure includes a positioning block and a connecting block. The positioning block is fixedly mounted on the outer wall of the heavy hammer, and a mounting hole is fixedly opened on the inner side of the positioning block. A bolt is movably connected to the inner side of the mounting hole, and a nut is threadedly sleeved on the lower end of the bolt. The connecting block is fixedly mounted on the top end of the bolt, and an extension handle is fixedly connected to the outer wall of the connecting block. The outer side of the extension handle is fixedly sleeved with anti-slip grooves.

[0010] Preferably, the upper portion of the nut is movably connected to the bottom end of the mounting hole, and the bottom end of the connecting block is movably connected to the upper portion of the positioning block.

[0011] Preferably, the reserved hole positioning pin reinforcement connection structure includes a limit block and a threaded groove, the threaded groove is fixedly opened on the inner side of the reserved hole positioning pin, the internal thread of the threaded groove is connected with a threaded head, the lower end of the threaded head is fixedly connected with a reinforcement core, the reinforcement core is fixedly connected to the inside of the top end of the sliding rod, the limit block is fixedly installed on the top outer wall of the sliding rod, and the lower end of the limit block is movably connected to the top of the heavy hammer.

[0012] Preferably, the top end of the column is fixedly connected to the bottom end of the slide rod, the front end of the extension handle and the side wall of the heavy hammer are arranged perpendicular to each other, and the top end of the slide rod is arranged opposite to the inner side of the reserved hole positioning pin.

[0013] The utility model proposes a device for removing the positioning pin of a reserved hole in concrete, which has the beneficial effects of adding lubricating oil to the inside of the lubricating cavity, thus facilitating the smooth sliding of the heavy hammer, and the buffer pad is made of a rubber material with strong toughness, pressure resistance and smash resistance, and the buffer pad can reduce noise and vibration and numbness of the hands. The structure of using the buffer pad to reduce vibration and filling the lubricating cavity with lubricating oil directly improves the use effect of the device for removing the positioning pin of the reserved hole in concrete.

[0014] The operator can insert the connecting block with the bolt below into the inner side of the positioning block. After the bolt is placed in the mounting hole, the nut is rotated and screwed into the bottom end of the bolt. The bolt is locked in the mounting hole by the nut. The extension handle has a certain length to increase the force arm between the hand and the hammer. The operator can slide the hammer up and down by holding the extension handle more labor-saving and can exert greater force. Increasing the force arm saves more effort and improves the holding effect, thereby improving the use efficiency of the concrete reserved hole positioning pin removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A front cross-sectional schematic diagram of ;

[0017] Figure 3 for Figure 1 A schematic cross-sectional view of the top surface;

[0018] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0019] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0020] Figure 6 for Figure 2 Enlarged cross-sectional view of part C in the middle.

[0021] In the figure: 1. Pre-hole locating pin, 2. Concrete layer, 3. Bottom plate, 4. Column, 5. Positioning pin knocking and removal structure, 51. Sliding rod, 52. Buffer pad, 53. Heavy hammer, 54. Lubrication chamber, 6. Pre-hole locating pin reinforcement connection structure, 61. Reinforcement core, 62. Limit block, 63. Threaded head, 64. Threaded groove, 7. Removable structure of knocking handle, 71. Positioning block, 72. Connecting block, 73. Mounting hole, 74. Bolt, 75. Nut, 76. Extension handle, 77. Anti-slip pattern. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Example 1:

[0024] See also Figure 1-6: In this embodiment, a concrete pre-hole locating pin removal device includes a pre-hole locating pin 1 and a base plate 3. A concrete layer 2 is movably provided on the outside of the pre-hole locating pin 1. The concrete layer 2 can be made of a high-strength precast concrete structural member. The pre-hole locating pin 1 is inserted and fixed inside the pre-hole on the inner side of the concrete layer 2. A column 4 is fixedly installed at the lower end of the base plate 3. The column 4 supports the base plate 3 for easy removal. A locating pin knocking and removal structure 5 is provided above the base plate 3, and a pre-hole locating pin reinforcement connection structure 6 is provided on the inner side of the pre-hole locating pin 1. The top of the base plate 3 is arranged opposite to the bottom of the pre-hole locating pin 1.

[0025] The locating pin knocking and removing structure 5 comprises a slide bar 51 and a weight 53. The slide bar 51 is fixedly mounted above the bottom plate 3, and the weight 53 is slidably sleeved on the slide bar 51. The weight 53 is made of solid metal iron material and is heavy. During the process of the weight 53 sliding up and down, it can rely on the inertia of hitting the top of the bottom plate 3 to apply a pulling force to the slide bar 51 outwards. A lubrication cavity 54 is fixedly provided on the inner side of the weight 53, and lubricating oil can be added inside the lubrication cavity 54, which facilitates the smooth sliding of the weight 53. The inner side of the lubrication cavity 54 is slidably connected to the outer wall of the slide bar 51, and the bottom end of the slide bar 51 is fixedly connected to a buffer pad 52. The buffer pad 52 is made of a rubber material with strong toughness, pressure resistance and smashing resistance. In this way, the weight 53 will first act on the buffer pad 52 after falling, and the buffer pad 52 can reduce noise and vibration while reducing numbness of the hand. The upper side of the buffer pad 52 is movably connected to the lower end of the weight 53.

[0026] The heavy hammer 53 is made of solid metal iron material and is heavy. During the up and down sliding process of the heavy hammer 53, it can rely on the inertia of hitting the top of the base plate 3 to apply a pulling force to the slide rod 51. Lubricating oil can be added to the lubrication cavity 54, which facilitates the smooth sliding of the heavy hammer 53. The buffer pad 52 is made of a rubber material with strong toughness, pressure resistance and smashing resistance. In this way, the heavy hammer 53 will first apply the impact force to the buffer pad 52 after falling. The buffer pad 52 can reduce noise and vibration and numbness of the hand. The structure of using the buffer pad 52 to reduce vibration and filling the lubricating cavity 54 with lubricating oil directly improves the use effect of the concrete reserved hole positioning pin removal device.

[0027] The outer side of the heavy hammer 53 is provided with a detachable striking handle structure 7, which includes a positioning block 71 and a connecting block 72. The positioning block 71 is fixedly mounted on the outer wall of the heavy hammer 53, and the positioning block 71 is welded to the outer wall of the heavy hammer 53. Under normal circumstances, the operator can directly manually push and pull the heavy hammer 53 up and down, but when the reserved hole positioning pin 1 is inserted too tightly and is difficult to pull out, the operator can insert the connecting block 72 with the lower bolt 74 into the inner side of the positioning block 71. The inner side of the positioning block 71 is fixedly provided with a mounting hole 73, and the inner side of the mounting hole 73 is movably connected with a bolt 74. The lower end of the bolt 74 is threadedly sleeved with a nut 75. After the bolt 74 is placed inside the mounting hole 73, the nut 75 is rotated and screwed into the bottom end of the bolt 74, and the bolt 74 is locked in the mounting hole 73 through the nut 75. When the bolt 74 is in the internal position, it will be installed on the outside of the weight 53 with the extension plate 76, and the connecting block 72 will be fixedly installed on the top of the bolt 74. The outer wall of the connecting block 72 is fixedly connected with an extension handle 76. The extension handle 76 is made of solid high-strength tungsten alloy steel. The extension handle 76 has a certain length to increase the force arm between the human hand and the weight 53. The operator can slide the weight 53 up and down by holding the extension handle 76 more labor-saving and can exert greater force. The outer side of the extension handle 76 is fixedly sleeved with an anti-skid pattern 77. The anti-skid pattern 77 is made of leather material wrapped around the outer side of the extension handle 76. The anti-skid pattern 77 can improve the anti-skid degree of the extension handle 76, make it more firmly gripped and not easy to fall off, the top of the nut 75 is movably connected to the bottom end of the mounting hole 73, and the bottom end of the connecting block 72 is movably connected to the top of the positioning block 71;

[0028] The positioning block 71 is welded to the outer wall of the weight 53. Under normal circumstances, the operator can directly manually push and pull the weight 53 up and down. However, when the reserved hole positioning pin 1 is inserted too tightly and is difficult to pull out, the operator can insert the connecting block 72 with the lower bolt 74 into the inner side of the positioning block 71. When the bolt 74 is placed inside the mounting hole 73, the nut 75 is rotated and screwed into the bottom end of the bolt 74. The bolt 74 is locked in the position inside the mounting hole 73 by the nut 75. At this time, the bolt 74 will be installed on the outside of the weight 53 with the extension plate 76. The extension handle 76 adopts a solid The extension handle 76 is made of high-strength tungsten alloy steel with a certain length to increase the force arm between the human hand and the heavy hammer 53. The operator can slide the heavy hammer 53 up and down by holding the extension handle 76 more labor-saving and can exert greater force. The anti-slip pattern 77 is made of leather material wrapped around the outside of the extension handle 76. The anti-slip pattern 77 can improve the anti-slip degree of the extension handle 76 and make the grip more firm and not easy to fall off. Through the detachable and installable extension handle 76 structure, the increase of the force arm is more labor-saving and the grip effect is also good, thereby improving the utilization efficiency of the concrete reserved hole positioning pin removal device.

[0029] Working principle:

[0030] When using the concrete pre-hole locating pin removal device, the top threaded head 63 is rotatably connected to the threaded groove 64 inside the pre-hole locating pin 1. When the sliding weight moves back and forth, the inertia provided by the weight can pull the sliding rod 51 together with the top pre-hole locating pin 1 out of the concrete layer 2;

[0031] Buffering and lubricating working structure of the concrete reserved hole positioning pin removal device:

[0032] The weight 53 is made of solid metal iron material and is heavy. During the process of sliding up and down, the weight 53 can rely on the inertia of hitting the bottom plate 3 to apply a pulling force to the slide bar 51. Lubricating oil can be added to the lubrication cavity 54, which facilitates the smooth sliding of the weight 53. The buffer pad 52 is made of a rubber material with strong toughness, pressure resistance and impact resistance. In this way, after the weight 53 falls, the impact force will first act on the buffer pad 52, which can reduce noise and vibration and numbness of the hands.

[0033] Removable gripping structure of the concrete pre-hole positioning pin removal device:

[0034] When the bolt 74 is inserted into the hole 73, the nut 75 is screwed into the bottom end of the bolt 74 to lock the bolt 74 in the position inside the hole 73. At this time, the bolt 74 will be installed on the outside of the hammer 53 with the extension plate 76. The extension handle 76 is made of solid high-strength tungsten alloy steel. The extension handle 76 has a certain length to increase the force arm between the human hand and the hammer 53. The operator can hold the extension handle 76 tightly to slide the hammer 53 up and down more labor-saving and can exert greater force. The anti-slip pattern 77 is made of leather material wrapped around the outside of the extension handle 76. The anti-slip pattern 77 can improve the anti-slip degree of the extension handle 76, making it more firm and not easy to fall off.

[0035] Example 2:

[0036] See also Figure 1-6: In this embodiment, a concrete pre-hole positioning pin removal device also includes a pre-hole positioning pin reinforcement connection structure 6 including a limit block 62 and a threaded groove 64. The threaded groove 64 is fixedly opened on the inner side of the pre-hole positioning pin 1. The internal thread of the threaded groove 64 is connected with a threaded head 63. The threaded head 63 is aligned with the threaded groove 64 on the inner side of the pre-hole positioning pin 1 to complete the docking installation. The lower end of the threaded head 63 is fixedly connected with a reinforcement core 61. The reinforcement core 61 is made of high-strength carbon steel alloy that is not easy to break. The reinforcement core 61 can improve the connection firmness between the threaded head 63 and the top of the slide rod 51, reducing high The removal of the positioning pin due to strength causes the threaded head 63 to break. The reinforcing core 61 is fixedly connected to the inside of the top of the slide rod 51, and the limit block 62 is fixedly installed on the outer wall of the top of the slide rod 51. The limit block 62 is on the outside of the top of the slide rod 51 and can limit the extreme position of sliding above the weight 53, so as to prevent the weight 53 from falling off on the outside of the slide rod 51. The lower end of the limit block 62 is movably connected to the top of the weight 53, and the top of the column 4 is fixedly connected to the bottom end of the slide rod 51. The front end of the extension handle 76 and the side wall of the weight 53 are arranged perpendicular to each other, and the top of the slide rod 51 is arranged relative to the inner side of the reserved hole positioning pin 1.

[0037] Working principle:

[0038] The threaded head 63 is aligned with the threaded groove 64 on the inner side of the reserved hole positioning pin 1 and the docking installation can be completed by rotating. The lower end of the threaded head 63 is fixedly connected to the reinforcement core 61. The reinforcement core 61 is made of high-strength carbon steel alloy that is not easy to break. The reinforcement core 61 can improve the connection firmness between the threaded head 63 and the top of the slide rod 51, and reduce the occurrence of the threaded head 63 breaking due to the high-strength removal of the positioning pin. The limit block 62 on the outside of the top of the slide rod 51 can limit the extreme position of the sliding above the heavy hammer 53, and can prevent the heavy hammer 53 from falling off on the outside of the slide rod 51.

[0039] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A concrete pre-hole positioning pin removal device, comprising a pre-hole positioning pin (1) and a base plate (3), characterized in that: A concrete layer (2) is movably provided on the outer side of the reserved hole positioning pin (1), a column (4) is fixedly installed on the lower end of the base plate (3), a positioning pin knocking and removing structure (5) is provided above the base plate (3), a reserved hole positioning pin reinforcement connection structure (6) is provided on the inner side of the reserved hole positioning pin (1), and the top end of the base plate (3) is arranged opposite to the bottom of the reserved hole positioning pin (1).

2. A device for removing positioning pins from a pre-reserved concrete hole according to claim 1, characterized in that: The positioning pin knocking and removing structure (5) includes a slide rod (51) and a weight (53), wherein the slide rod (51) is fixedly mounted above the base plate (3), and the weight (53) is slidably sleeved on the slide rod (51). A lubrication cavity (54) is fixedly provided on the inner side of the weight (53), and the inner side of the lubrication cavity (54) is slidably connected to the outer wall of the slide rod (51). The bottom end of the slide rod (51) is fixedly connected to a buffer pad (52), and the upper end of the buffer pad (52) is movably connected to the lower end of the weight (53).

3. The device for removing positioning pins from a concrete reserved hole according to claim 2, characterized in that: The outer side of the heavy hammer (53) is provided with a detachable striking handle structure (7), and the detachable striking handle structure (7) includes a positioning block (71) and a connecting block (72), wherein the positioning block (71) is fixedly mounted on the outer wall of the heavy hammer (53), a mounting hole (73) is fixedly opened on the inner side of the positioning block (71), a bolt (74) is movably connected to the inner side of the mounting hole (73), a nut (75) is threadedly sleeved on the lower end of the bolt (74), and the connecting block (72) is fixedly mounted on the top end of the bolt (74), an extension handle (76) is fixedly connected to the outer wall of the connecting block (72), and an anti-slip pattern (77) is fixedly sleeved on the outer side of the extension handle (76).

4. The device for removing positioning pins from a pre-reserved concrete hole according to claim 3, characterized in that: The upper portion of the nut (75) is movably connected to the bottom end of the mounting hole (73), and the bottom end of the connecting block (72) is movably connected to the upper portion of the positioning block (71).

5. The device for removing positioning pins from a pre-reserved concrete hole according to claim 1, characterized in that: The reserved hole positioning pin reinforcement connection structure (6) includes a limit block (62) and a threaded groove (64), wherein the threaded groove (64) is fixedly opened on the inner side of the reserved hole positioning pin (1), the internal thread of the threaded groove (64) is connected to a threaded head (63), the lower end of the threaded head (63) is fixedly connected to a reinforcement core (61), and the reinforcement core (61) is fixedly connected to the inner side of the top end of the slide rod (51), the limit block (62) is fixedly installed on the outer wall of the top end of the slide rod (51), and the lower end of the limit block (62) is movably connected to the upper side of the heavy hammer (53).

6. The device for removing positioning pins from a pre-reserved concrete hole according to claim 3, characterized in that: The top end of the column (4) is fixedly connected to the bottom end of the slide rod (51), the front end of the extension handle (76) and the side wall of the heavy hammer (53) are arranged perpendicular to each other, and the top end of the slide rod (51) is arranged opposite to the inner side of the reserved hole positioning pin (1).

Images